Alternative rear disc conversion?

[Neinris]

Alright, here we go...

I've known about this for quite a while, almost 2 years now. Not sure if this is more cost effective than swapping the rear axle with the 2012+ SE.

I've found this thread from another Toyota forum, and it's not even about the Yaris, it's a 10th GEN Corolla.

https://www.toyotanation.com/threads/diy-10th-gen-corolla-s-rear-disc-brake-swap.390125/

BLUF:
This involves installing bracket plates for the calipers to mount on. Part numbers of said plates/splash shields are 47803-02020 (right) and 47804-02020 (left).
IF these plates in fact fits on the Yaris, it could be a game changer. You wouldn't need to swap out the whole axle, and your wheels will stick out 10mm farther, which would then make the rear wheels stick out more than the front, which I don't mind.
I kind of wanted to be the first to do it, but I'm sharing it now to see if anyone dares to try it out, and I don't really have the funds right now.

I know most would argue that these light cars don't really need disc brakes in the back, blah, blah, blah... If you're not interested, you can stop reading. But for those who are curious, this might be worth your while.

Here are most of the parts that the other poster used for his rear disc brake conversion (my apologies, I can't seem to copy the table but I hope you can still figure out what category falls where):

P/N Quantity Price EA Description
0446602310 1 $ 40.88 Disc Brake Pad Set (Rear)
4780402020 1 $ 122.13 Brake Dust Shield (Left, Rear)
4780302020 1 $ 122.13 Brake Dust Shield (Right, Rear)
90947A2023 2 $ 46.13 Brake Hydraulic Hose (Right, Rear)
4782102160 2 $ 96.43 Disc Brake Caliper Bracket (Left, Right, Rear) Mounting, Disc Brake Cylinder. A bracket for a disc brake caliper.
4785002180 1 $ 150.51 Disc Brake Caliper (Left, Rear)
4783002180 1 $ 150.51 Disc Brake Caliper (Right, Rear)
4243102200 2 $ 53.31 Disc Brake Rotor (Rear) A single disc brake rotor
4642002151 1 $60.27 E-Brake R
4643002151 1 $60.27 E-Brake L

The big thing that I want to point out, P/N 42431-02200, has the same dimension as P/N 42431-52080, which is the part number for the 2012 Yaris SE rear rotor. Do I have your attention now?
So, first things first to get this to work, the splash guard would have to fit on the Yaris, if not, we're dead on the water. Next, need to sort out what else from that list can be used on the Yaris, well some are straightforward, the calipers can be used, and the pads, since the rotors are the same dimension. And finally, is this more cost effective than the axle swap? Probably easier to tackle than the axle swap, especially if you're by yourself.

There you have it Ladies, another stupid idea from me. I hope someone is crazy enough to test it out before me. :biggrin:

[remcafee]

well it certainly is an alternative i personally do not like the fact of have a whole different rear suspension geometry not designed for our cars but for a corolla, having the rear wheel stance out would not make sense as our front end needs major help already, if its for a look thing i guess, but the yaris se rear disc swap is perfect as their is no change in rear suspension gemoetry and everything still lines up as the factory would want, the corolla brackets and mounting holes physically look larger than ours, once i see an old corolla roll through our dealer ill take a peek and let you guys know though. edit: just realized youre not doing anything to disturbe rear axle positioning but just hub length and flange thickness, i think it would work just waiting to find an old corolla come in so i can measure the length and height of the flange thickness on the corolla axle

[Neinris]

well it certainly is an alternative i personally do not like the fact of have a whole different rear suspension geometry not designed for our cars but for a corolla, having the rear wheel stance out would not make sense as our front end needs major help already, if its for a look thing i guess, but the yaris se rear disc swap is perfect as their is no change in rear suspension gemoetry and everything still lines up as the factory would want, the corolla brackets and mounting holes physically look larger than ours, once i see an old corolla roll through our dealer ill take a peek and let you guys know though. edit: just realized youre not doing anything to disturbe rear axle positioning but just hub length and flange thickness, i think it would work just waiting to find an old corolla come in so i can measure the length and height of the flange thickness on the corolla axle

Remcafee, thank you! I appreciate you taking the measurements. I hope this takes off.

[06YarisRS]

Sub'd. This is something I've thought would be a great upgrade. Would there be any issues with fluid metering and balancing of brake forces front to rear? The Yaris brakes must be designed to distribute a specific force per axle. The caliper pistons are surely much larger in surface area than the tiny wheel cylinder pistons. I'm no fluid dynamics engineer, but I do wonder about this. Do the rear disk and rear drum cars use the same master cylinder?

EDIT: Not positive, but the 2008 Vitz RS uses master cylinder (47201-52280) and 2008 Yaris uses (47201-52320). May not make any difference.

[Neinris]

Sub'd. This is something I've thought would be a great upgrade. Would there be any issues with fluid metering and balancing of brake forces front to rear? The Yaris brakes must be designed to distribute a specific force per axle. The caliper pistons are surely much larger in surface area than the tiny wheel cylinder pistons. I'm no fluid dynamics engineer, but I do wonder about this. Do the rear disk and rear drum cars use the same master cylinder?

Adam, at another thread it's mentioned that if you have ABS you're fine without having to install a proportioning valve. If you don't have ABS, it's is highly recommended that you install one. It's not really that hard to install one, I was trying to argue if having braided lines on the front, and regular lines on the rear would suffice, but that's not advisable neither.
Obviously if or WHEN I do this, I'll be installing the bigger rotors in front. The stock front rotors are 255mm in diameter, the SE rear rotors are 259mm, and the SE front rotors are 275mm. Most of you already knew that.

[06YarisRS]

Adam, at another thread it's mentioned that if you have ABS you're fine without having to install a proportioning valve. If you don't have ABS, it's is highly recommended that you install one. It's not really that hard to install one, I was trying to argue if having braided lines on the front, and regular lines on the rear would suffice, but that's not advisable neither.
Obviously if or WHEN I do this, I'll be installing the bigger rotors in front. The stock front rotors are 255mm in diameter, the SE rear rotors are 259mm, and the SE front rotors are 275mm. Most of you already knew that.

Haha, not 5 minutes after posting, I scrolled down and saw the other thread. :rolleyes: This may sound completely silly, but I'm not sure if I have ABS or not on my 2006. Haha. Pretty sure my old '08 did. Going to go look at my wiring diagrams. :thumbsup:

EDIT: Guess this answers my own question:

https://i.imgur.com/2gOCkzI.jpg

[remcafee]

yeah the abs is actually wonderful in our cars it has electronic brake force distribution and meters brake proportioning electronically not just front and rear both EACH individual wheel separately from one another, so if you dont have abs youre actually gonna have to do more work lol

[enviri]

its been talked to death. no one has done it. do it, make it happen. people will credit you.
I've used XRS pads before the '12 SE was out so yeah its pretty good on dimensions.

just hope the hub bolts line up :P

[Neinris]

its been talked to death. no one has done it. do it, make it happen. people will credit you.
I've used XRS pads before the '12 SE was out so yeah its pretty good on dimensions.

just hope the hub bolts line up :P

WOW! I even got Enviri’s attention! What an honor!
Not sure what you’re referring to when you said “talked to death”.
All I’m doing is bring the idea to give others a possible other option. If I do this it’d be in a distant future, I’d rather spent my money on the engine swap. And besides, my other dumb idea is to try and see if the 2nd GEN Scion xB’s rear axle frame fits the Yaris. Can you say 5X114.3?

[remcafee]

i found a rear axle beam from a yaris se with the calipers and everything they left on it for about $240 its not as pricey as you think assuming you get junkyard parts and its perfect fitment for our cars, if its cost youre worried about, have a fabrication shop weld on some rear caliper brackets to your rear axle beam and youre good to go, just source the calipers and lines and such afterwards

[Neinris]

i found a rear axle beam from a yaris se with the calipers and everything they left on it for about $240 its not as pricey as you think assuming you get junkyard parts and its perfect fitment for our cars, if its cost youre worried about, have a fabrication shop weld on some rear caliper brackets to your rear axle beam and youre good to go, just source the calipers and lines and such afterwards

It really all comes down to cost, and availability. Who would want to pay more for something if they can get it for less? The other poster bought everything brand new, of course it'd be more expensive. They can also be found from the the junk yard. Are the Yaris SE more abundant than the Corolla and I think Matrix that the splash guards/back plate came from?

Getting it welded crossed my mind, but my aim is a DIY for the mass. Also it could be slightly off and make the pads wear irregularly. Another thing that crossed my mind was tracing the back plate from the SE and getting one made and slapping it on top. But since I came across the other thread I thought it'd be cheaper to get the splash guards than getting one manufactured.

I need to get my vapor canister and pump replaced. I was going to scower the junk yard for one, maybe I'll scower for a splash guard as well and see how it fits.

[enviri]

yaris se and corolla XRS...the numbers may be similarly small!! the biggest thing is if that caliper mount matches with our hubs, everything else is trivial. if that caliper mount fits a yaris rear caliper also, then holy crap. My original idea is to make a hubspacer with caliper mounts, and did consider the xb2 rear shield but it wont fit.

since when did i become famous?

[Neinris]

yaris se and corolla XRS...the numbers may be similarly small!! the biggest thing is if that caliper mount matches with our hubs, everything else is trivial. if that caliper mount fits a yaris rear caliper also, then holy crap. My original idea is to make a hubspacer with caliper mounts, and did consider the xb2 rear shield but it wont fit.

since when did i become famous?

LOL! Always been famous to me, I’ve seen your name around. Almost up there with CTScott in my book.
The thought I have with xB2 is a complete axle frame swap to try switching to 5x114.3. The axle has the same spline count as the Yaris, so swapping the steering knuckle might be an option. That’s for another story.
Like I said, I too thought about tracing the SE hub mount and getting a plate made, but it might be more expensive to get manufactured.
Well I hope me sharing this inspires others to try it out. Gonna go to the junkyard this weekend. Crossing my fingers...

[CrankyOldMan]

I have an SE rear axle in the garage and there's a 10th gen Corolla in the local junk yard but it only has drum brakes. If I could pull the rear hub I could at least compare bolt patterns and bore diameter since the hub is common to all variants of that gen Corolla.

[Neinris]

I have an SE rear axle in the garage and there's a 10th gen Corolla in the local junk yard but it only has drum brakes. If I could pull the rear hub I could at least compare bolt patterns and bore diameter since the hub is common to all variants of that gen Corolla.

OH MAN! Now we Cranky involved!!!

Please do! I may or may not find a XRS in the junk yard, I'm sure I'm not the only one who would appreciate it.

[enviri]

apparently the rear dust shield extends to 2019....maybe other parts. trying to find them used :P

[Neinris]

apparently the rear dust shield extends to 2019....maybe other parts. trying to find them used :P

Cool! Cool! I guess I’ll just start looking for Corollas with rear disc brakes in the junk yard. The evap canister are also similar if not the same. So might be two birds with one stone.

[Neinris]

Went to the pick and pull today, couldn’t find a Corolla with rear disc brakes. I tried pulling out a hub from one of the, but it was really on there. The other ones were sitting on mud, so I didn’t bother. I’ll try another pick and pull this weekend.

[remcafee]

sometimes you gotta give them a good smacking with a hammer, but as long as the 4 bolts are loose it should come out

[Neinris]

Looks like the LKQ near me near me just added a 2015 Corolla in their inventory. I'll check if it has rear disc brakes while I'm there trying to grab other things. Stay tuned! :biggrin:

[Neinris]

Ok... So the 2015 Corolla has rear disc brakes, I took them off and hid them for now... :laugh: I bought just the right splash guard for now. I guess we’ll test fit this weekend, and if it works, then I’m off to grab the rest of them, I was even careful to remove the e-brake cables, I hope those will work as well. Crossing my fingers!!!

[06YarisRS]

:thumbup: Great work! Can't wait for the outcome.

[enviri]

that bolt pattern looks almost square....im already worried. lining it up via photoshop (i have a spare rear hub) made my assumption worse.

[Neinris]

I took more pics and made it as parallel the the plate as I can, as you all know, the image can get distorted if not taken perfectly squared. I also made some measurements, I’m probably off by +|- 3mm, but I eyeballed the center of the holes the best I can. Can you take measurements?

[enviri]

ooo a digital caliper. so fancy.

[enviri]

pics may be too big?

[Neinris]

ooo a digital caliper. so fancy.

:laugh: :laugh: :laugh:

It's actually garbage, got it from Auto Zone, didn't know it's made of plastic. Sigh...

[enviri]

i might have a caliper in my trunk, but then i have to carry my 1nz head OFF the trunk...meh.

[Neinris]

pics may be too big?

Hmmm... it's not looking good. :frown:
But I won't let that discourage me, I'll still do a fitment test. Crossing my fingers. :redface:

[remcafee]

hmmm its a completely different design than our yaris, the caliper mounting holes are part of the dust shield, interesting, it looks awfully thicker than the yariss hub from the side pics im thinking it may need to shim the hubs (assuming they fit) so that the rear disc brakes wont be dragging sice they arent at the right angle

[Neinris]

hmmm its a completely different design than our yaris, the caliper mounting holes are part of the dust shield, interesting, it looks awfully thicker than the yariss hub from the side pics im thinking it may need to shim the hubs (assuming they fit) so that the rear disc brakes wont be dragging sice they arent at the right angle

Sorry, I didn't get what you mean by it not being the right angle? Maybe you're talking about using the calipers from the Yaris SE? For this build you'd have use the calipers that came with the car, which is what I was planning all along.

Anyway, the difference how the Corolla and the Yaris bolts their rear hubs are that the Corolla's bolts comes from the back, the threads are on the hubs, while the Yaris bolts comes from the front, the threads are on the axle frame. I've tested the bolts that came with the splash guard, they thread in the mounting holes, and they're longer too. They have washer on them, which I'd probably remove to make sure they'd thread through all the way.

I just measured how thick the mounting face is, it's 11mm with the splash guard. Which means the wheels will stick out that much further. I'm fine with that, since the rear are tucked in more than the front anyway. If this works, the wheels will 6mm further than the front, 12mm total. According to this video, the front is 1470mm wide and the rear 1460mm, around 2:48 in the time stamp:

https://www.youtube.com/watch?v=GuEcY4RwS50&t=170s

I tried to remove the rear passenger hub after work today, but I got bested by it. I forgot to take measurements, I was in a hurry as I was running out of daylight. I'll buy two long bolts of the same thread size, nuts, and washers from Home Depot tomorrow, I should be able to safely back it out using the same method done in this video:

https://www.youtube.com/watch?v=7nj_KUkASxg

All in all, I just wish the center hole is the same size. If the mounting holes don't lineup, I'd probably get them filled with weld and drill the correct holes in them. Hopefully I don't have to resort to that. :redface:

[enviri]

there might be some shaving to be done to the dust shield around the top to fit the yaris axle mount indeed.. have fun!

[Neinris]

Well, I’m a little disappointed that the mounting holes didn’t lineup, not a single one, but the center hole is the same size so there’s still hope. I’m going to continue this project, but I’ll postpone it for now.

[enviri]

fill and redrill, find a machinist, mass produce. or make a hub spacer and screw the dust shield

[Neinris]

fill and redrill, find a machinist, mass produce. or make a hub spacer and screw the dust shield

That's partially what I have planned. I'm going to fill the holes and redrill. If the center of the hub don't poke through the back, I'm going to mill down the back of the plate just a bit so that the center of the hub would poke through even just a bit, 3mm should be enough, so the weight is not on the bolts. I might wait to do all of that until I'm back in Maryland though, my friend has a mill, drill press, etc. That's why I'm putting this on pause. I am going to go ahead and get the rest of the hardware from the junkyard this weekend though, I don't know when I'd get the opportunity again to find the whole set. I'll even grab the ebrake cables to make everything easier on me when it's finally time to install. I'll revive this thread once I've actually installed.
I don't know about mass producing, I might just give out the template dimensions for everyone to get their own made.

[enviri]

ever seen the old penguin garage hub spacers? you can just do that and add ears.

[Neinris]

ever seen the old penguin garage hub spacers? you can just do that and add ears.

Never seen it. Got a link to share? Never mind, just saw the thread.

Would you mind measuring how long the round part is on the back of the hub? I don't feel like removing mine again. just wondering if it's longer than 11mm. I need to know if I need to do any milling. Thanks in advance.

[Neinris]

Seeing that the Penguin spacers were 13 and 10mm thick, I won't bother milling the 11mm thick splash guard. I hope the bolts are strong enough. :redface:

[CrankyOldMan]

TL;DR - Use an SE axle. ;)

That's always a bummer when it doesn't pan out. Good on you for making the investigation though!

[Neinris]

TL;DR - Use an SE axle. ;)

That's always a bummer when it doesn't pan out. Good on you for making the investigation though!

Thanks. I just thought I'd share the idea. Like I said, I'll still continue with this project, just not right now, OR maybe an xB2 axle for 5 lug conversion? :laugh: You'd definitely need a proportioning valve for the rear brakes if you don't have abs, the rear rotors for the xB2 are 279mm while the front are just 275mm!!!

[enviri]

SE rear rotors are 269mm. stock yaris front is 255mm. 275mm is the SE front. its far FARRR easier to do XD hubs for 5 lug. yeah i know xb2 is a different 5lug pattern.

btw, read https://www.yarisworld.com/forums/showthread.php?t=53596, pretty much the same discussion...but 2015..lol

[Neinris]

SE rear rotors are 269mm. stock yaris front is 255mm. 275mm is the SE front. its far FARRR easier to do XD hubs for 5 lug. yeah i know xb2 is a different 5lug pattern.

btw, read https://www.yarisworld.com/forums/showthread.php?t=53596, pretty much the same discussion...but 2015..lol

Yup, I've seen that thread before. And I don't want 5X100, I'd go with 5X114.3 if I'm gonna go 5 lugs. Otherwise I would have already done it, there's a xD sitting in the junkyard where I go, which I'm going to grab the calipers and midpipe from. :biggrin: There are also a couple of xB2s, I might go take some measurements of the rear axle frame.

I'm not giving up on this project just yet though. You guys thinks that the bolts are strong enough to hold the weight on the back, or should I mill down the plate so that the center of the hub would poke through into the axle center hole?

[enviri]

why would you need to mill? anyway the abs sensor is 15-16mm. the bolts would handle it but i would still get longer grade 8 bolts

[Neinris]

I feel like someone was out to sabotage my plans. The Scion xD that I was eyeing in the junkyard was moved to a different lot. OK, my fault for not checking the inventory. But not only was it moved to a different lot, it was moved to the “premium” section, so I had to pay an extra $2 to get in that lot. No big deal. But then the car was vandalized, the car was whole when I saw it last. This time the passenger steering knuckle was removed for no reason, luckily I found it between other cars in a completely different row. The brake lines were cut, and the mid pipe was hacked for no reason. Sigh...Good thing I hid the Corolla’s rear calipers, because when I got to that car the rear brake likes and cables were also tampered with.
Whatever, I still got the front xD calipers, and took the pads for free. Looks like the car had just gotten the brake pads replaced before it got junked.

[Neinris]

why would you need to mill? anyway the abs sensor is 15-16mm. the bolts would handle it but i would still get longer grade 8 bolts

Thanks for measuring. My Yaris don’t have ABS. I think, I don’t know what to call it, the hub dowel? is shorter on non-ABS Yaris. If they are then I’d get the ones with ABS so it’d protrude out of the splash guard mounting bracket into the axle frame for the added weight support. Although, I just remembered that the Corolla’s hub dowel did not protrude out. I have the bolts that mounted the splash guard on the Corolla, they are longer than the Yaris’ bolts by at least 12mm I think. I forgot to take a pic to compare when I removed the hub. It has a washer on it, which I’ll remove.

[Neinris]

The project is still on going… I just realized I need the hard lines for the rear:

[Neinris]

My apologies this project has been dragging. :redface:
I’ve bought most of the parts needed for this conversion. And I’ve just fitted a wheel hub and rotor. And they fit perfectly. Sorry I kept the rotor in its plastic packaging.
I’ll be going to my friend's house this weekend to do some machining to the caliper mounting plate. As you all can see in the first picture, the original mounting holes needs to be filled and re-drilled. I was hoping that the hub’s center bore pilot would protrude even just a little to support the weight, but unfortunately it doesn’t. So I’m debating if I should mil down the back of the plate’s mounting surface so that it would come out even just 2mm. I didn’t get a chance to measure it yet. I will see if I can this weekend.

[06YarisRS]

Awesome! Will be following.

[sh0rtlife]

out of my own stupid curiosity...whouldnt the "XB" stuff work too?..seems more plentiful

[Neinris]

out of my own stupid curiosity...whouldnt the "XB" stuff work too?..seems more plentiful

Which GEN xB would you be referring to? The 1st GEN has drum brakes on the rear. I don't know of any trim which has rear disc brakes, but I could be wrong. The 2nd GEN xB does have rear disc brakes, but the calipers mounts directly to the axle frame. If you can get a hold of a 2nd GEN xB rear axle frame, and see if it would fit the Yaris let me know, I'd switch to that and do a 5 lug conversion!!! I'd have to figure out if the front xB steering knuckles would fit in the Yaris. AFAIK, the drive axles have the same spline count towards the wheel hub.

[sh0rtlife]

ok bonus stupid question since the gen2 is part of the axle, are the gen1 xb drums bigger than the yaris?..just kinda thinking it may not be disc but may be a significant and cheep upgrade

[Neinris]

ok bonus stupid question since the gen2 is part of the axle, are the gen1 xb drums bigger than the yaris?..just kinda thinking it may not be disc but may be a significant and cheep upgrade

Both the Yaris and 1st GEN xB have 200mm nominal drum diameter. From RockAuto's parts diagram, the Yaris actually has an outer ring? for cooling I guess? The 1st GEN xB doesn't. I almost looked into getting a Honda Civic's rear drum, which has cooling fins (https://static.summitracing.com/global/images/prod/xlarge/AXT-AX8736_RU_xl.jpg), the nominal drum size is also 200mm, but the outer diameter is too big, which I think won't fit in the drum back plate attached to the axle frame.

[Neinris]

My friend made me weld the holes, so they’re no so great. We couldn’t find the chuck for his mill, so I haven’t been able to grind flush the welds down. I made sure the surfaces and holes were clean prior to welding.

[Neinris]

The weld that filled the holes of the Corolla back plates are sooo tough. I bought a 8% cobalt drill bit set, and they still can’t penetrate through the welds. So I went with an alternative. Using the back plate from the Corolla, my friend made me a new back plate out of 1/4 inch steel plate. Here’s a preview of what will be, so stay tuned…

[sh0rtlife]

between your thread and my perpetual needing to re-adjust the drums..has got me re-thinking disc rears...

now hear me out...stock front yaris rotors put on the rear using XB rear calipers..i belive i could keep my 14inch aluminum wheels..the XB rear calipers solve the E-brake issue without the need for a drum hat rotor....tho i suspect id need an adapter mounting plate similar to yours but 1/4 inch of more offset in the rear of a stock yaris drum beam would square up the wheelbase nicely

[Compeer]

between your thread and my perpetual needing to re-adjust the drums..has got me re-thinking disc rears...

now hear me out...stock front yaris rotors put on the rear using XB rear calipers..i belive i could keep my 14inch aluminum wheels..the XB rear calipers solve the E-brake issue without the need for a drum hat rotor....tho i suspect id need an adapter mounting plate similar to yours but 1/4 inch of more offset in the rear of a stock yaris drum beam would square up the wheelbase nicely

http://www.speedhunters.com/2019/04/project-bb-completing-conversion/

Yet another amazing New Zealand build here but this one they show you how they modify there BB to increase track width by just attaching the same tabs as the brake caliper version had.

[Neinris]

between your thread and my perpetual needing to re-adjust the drums..has got me re-thinking disc rears...

now hear me out...stock front yaris rotors put on the rear using XB rear calipers..i belive i could keep my 14inch aluminum wheels..the XB rear calipers solve the E-brake issue without the need for a drum hat rotor....tho i suspect id need an adapter mounting plate similar to yours but 1/4 inch of more offset in the rear of a stock yaris drum beam would square up the wheelbase nicely

If you didn't know, the front wheels' track are wider than the rear by 10mm (5mm on each side), adding the 1/4 inch plate will make the rear 2mm wider than the front (1mm on each side).

How would the xB's rear caliper mount on the rear axle frame? Or are you swapping out the axle frames?

[Neinris]

http://www.speedhunters.com/2019/04/project-bb-completing-conversion/

Yet another amazing New Zealand build here but this one they show you how they modify there BB to increase track width by just attaching the same tabs as the brake caliper version had.

Nice! But that rear disc conversion uses the drums for the parking brake. My conversion uses the discs as the parking brake.

[Neinris]

I the end, here’s what mine will look like:

[sh0rtlife]

If you didn't know, the front wheels' track are wider than the rear by 10mm (5mm on each side), adding the 1/4 inch plate will make the rear 2mm wider than the front (1mm on each side).

How would the xB's rear caliper mount on the rear axle frame? Or are you swapping out the axle frames?

the issue i ran into when looking at the XA brakes..is the fact that they are all drum in the states but disc elsewhere in the world.....annoying at best

and like you said the bonus is having the caliper be the hand brake and not have a set of drums under it and the second gen XB calipers are setup exactly like that and will sit over the yaris front rotors perfectly....the trick becomes mounting and i "think" there may be a solution to not using a spacer and just welding the caliper mount directly to the beam, its a question of how well the alignment sits for doing so

[Neinris]

the issue i ran into when looking at the XA brakes..is the fact that they are all drum in the states but disc elsewhere in the world.....annoying at best

and like you said the bonus is having the caliper be the hand brake and not have a set of drums under it and the second gen XB calipers are setup exactly like that and will sit over the yaris front rotors perfectly....the trick becomes mounting and i "think" there may be a solution to not using a spacer and just welding the caliper mount directly to the beam, its a question of how well the alignment sits for doing so

Once I get to mounted and tested for a few months I’ll let you know if there’s any mounting issue. I’m also planning on making another mounting plate for the Yaris SE caliper, which are clocked different than the Corolla calipers.

[sh0rtlife]

Once I get to mounted and tested for a few months I’ll let you know if there’s any mounting issue. I’m also planning on making another mounting plate for the Yaris SE caliper, which are clocked different than the Corolla calipers.

your running the bigger rotors tho right?...i might be intrested in a set of plates from you even if i need to modify them slighty

im hell bent on keeping my 14 inch wheels....but finding a way to make a rear disc fit is looking really good right now...i have to re-adjust the rear drums every month

bonus is i allready have another set of front rotors sitting waiting

[Neinris]

your running the bigger rotors tho right?...i might be intrested in a set of plates from you even if i need to modify them slighty

im hell bent on keeping my 14 inch wheels....but finding a way to make a rear disc fit is looking really good right now...i have to re-adjust the rear drums every month

bonus is i allready have another set of front rotors sitting waiting

I do have the bigger rotors up front from the later model Yaris SE if that's what you're asking. I don't think they'll fit in 14" wheels, they barely fit in my 15" wheels.
Seeing some's rear disc conversion like Compeer, who also has a set of 15" wheels, shows how close the caliper gets to the rear wheels. The stock front rotor size for none SE are 255mm, the rear rotors are 259mm. The rear calipers are smaller and seem to have a lower profile than the front calipers, so the rear disc conversion might still work for 14" wheels. If you don't have ABS, you'd have to get a brake balancer/proportioning valve for the rear line, since the rear disc will be bigger. Ditch using the front rotors for the rear, buy rear disc from RockAuto, I think they were $20 each when I bought mine.

[sh0rtlife]

curiosity why not use a set of fronts?..ive got matching set on the shelf drilled/slotted that i could use...and it seems to me if you had matching front/rear rotor size youd have less brake bias issues..sure youd still need the prop valve and to tweak it to perfection but there would be a whole lot less need to compensate with matched size on all 4...heck i bet you could balance it out some more by useing a "softer" pad in the back than the front

i can get full lock out of the fronts if i really REALLY get on it tho its useualy just 1 not both, so adding brakeing to the rear would be glorious..but im not losing my 14s...so im looking for a solve..and i think youve solved "most" of it

also looking at getting a toaster!..a gen1 xb and i know thats the same parts under it and 14's are most likely what will be on it as well...so if i can make this work on the yaris it would be the same parts on the xb

[Neinris]

curiosity why not use a set of fronts?..ive got matching set on the shelf drilled/slotted that i could use...and it seems to me if you had matching front/rear rotor size youd have less brake bias issues..sure youd still need the prop valve and to tweak it to perfection but there would be a whole lot less need to compensate with matched size on all 4...heck i bet you could balance it out some more by useing a "softer" pad in the back than the front

i can get full lock out of the fronts if i really REALLY get on it tho its useualy just 1 not both, so adding brakeing to the rear would be glorious..but im not losing my 14s...so im looking for a solve..and i think youve solved "most" of it

also looking at getting a toaster!..a gen1 xb and i know thats the same parts under it and 14's are most likely what will be on it as well...so if i can make this work on the yaris it would be the same parts on the xb

The calipers for the rear (with parking brakes) are made for solid rotors, not slotted, so they're really narrow. Not even the Supra rear calipers would work, their rear rotors are slotted, but only 16mm thick, the Yaris' front rotors are 22mm thick. So I'm curious, what caliper were you thinking of using that would work with the front rotors and has parking brake? Actually, I think I still have my old front rotors, when I get home today I'll see if they fit through the rear calipers slit and post a picture for you.

[sh0rtlife]

i was eyeballing the second gen XB rear calipers with built in hand brake

[Neinris]

i was eyeballing the second gen XB rear calipers with built in hand brake

Which xB, the 2nd GEN? Those rotors are bigger, 279mm, and only 10mm thick. The Yaris front rotors don't fit in the Corolla/Yaris rear caliper by the way. It's too thick. Sorry no pic, I just got home, and it's already dark outside. The MR-2 rear caliper might work for what you're trying to do, but you're modifying the parking brake cable to make it work.

[sh0rtlife]

oof yeah i didnt think about the thickness..tho your right the mr2 rear caliper looks serviceable

if i could find a "solid" rotor that was thin enough and similar DIA as the yaris fronts that would be ideal but im not sure such an animal exists in the 4x100...the alternative would be to get someone to "mill" down a set of the rears your using down to the same dia as the yaris fronts..but id really like it to be as "off the shelf" as possible

let me know what the max thickness a rolla calipers will fit ?...a bit of digging shows that a possible solution may be mazda miata mx5 rears 251x9mm thick correct center bore..its a question of offset and hub at that point

[Neinris]

oof yeah i didnt think about the thickness..tho your right the mr2 rear caliper looks serviceable

if i could find a "solid" rotor that was thin enough and similar DIA as the yaris fronts that would be ideal but im not sure such an animal exists in the 4x100...the alternative would be to get someone to "mill" down a set of the rears your using down to the same dia as the yaris fronts..but id really like it to be as "off the shelf" as possible

let me know what the max thickness a rolla calipers will fit ?...a bit of digging shows that a possible solution may be mazda miata mx5 rears 251x9mm thick correct center bore..its a question of offset and hub at that point

Like I said, the Yaris SE rotors are only 5mm bigger in diameter than the front. Maybe you can get away with using steel braided hoses upfront and regular rubber hoses in the rear to soften the brake pressure in the rear.

[sh0rtlife]

5mm when your on 14s is ALOT lol when your talking about bigger calipers

i just made note than an 03 prius..uses 255mm rear rotors...prius rotors and calipers should clear, at that point its mounting them..and any weirdness with the hand brake cables

how are you handling the brake cables anyway

[Neinris]

5mm when your on 14s is ALOT lol when your talking about bigger calipers

i just made note than an 03 prius..uses 255mm rear rotors...prius rotors and calipers should clear, at that point its mounting them..and any weirdness with the hand brake cables

how are you handling the brake cables anyway

I'm using the 2012 Yaris SE parking cables, they'll work with the Corolla calipers, that's one of the first thing I looked at before I envisioned the swap. With the exception of the hangers that they come with, they're pretty much a drop in. I'd have to route it differently than the Yaris though, because the mechanism for the Corolla pulls from the top. And the Corolla's calipers has to be clocked around 2 (driver side) and 10 (passenger side) O'clock to point the bleeder valve up. The Yaris' calipers are fine to be at 3 and 9 O'clock since the bleeder valve will already be pointing slightly upwards. See pics below, the shinny caliper is for the Yaris.

[Neinris]

I just realized I could run just one long rubber hose per side to the rear calipers instead of having multiple couplings. I’ll buy the Corolla rear brake lines and see if they’re long enough.

[Compeer]

I just realized I could run just one long rubber hose per side to the rear calipers instead of having multiple couplings. I’ll buy the Corolla rear brake lines and see if they’re long enough.

Just go to a brake shop and have hardlines made at that point and move the tabs at the same time, you would need to make propper mounts to hold the hose correctly may as well just get little hardlines made and move it, but personally I just went back to stock holes. Need to put my tein flex z back on soon, I want some 5mm spacers.

[Neinris]

Just go to a brake shop and have hardlines made at that point and move the tabs at the same time, you would need to make propper mounts to hold the hose correctly may as well just get little hardlines made and move it, but personally I just went back to stock holes. Need to put my tein flex z back on soon, I want some 5mm spacers.

I actually have all the hardware I need to do the disc brake swap, minus the brackets for the hose lines. I wanted a different approach to reduce the coupling from hardline to rubber, to hard line again, then rubber to the caliper.

[sh0rtlife]

ive got a shop local that i get custom braided lines from for CHEEP..so that would be my fix lol

[Neinris]

ive got a shop local that i get custom braided lines from for CHEEP..so that would be my fix lol

My suggestion to you is to not go steel braided line in the rear, but the front, to soften the braking power in the rear since you’re hell bent on keeping your 14s.

Most likely, I’ll be installing my conversion next weekend. I think I know what I’m going to do with what I have.

[sh0rtlife]

My suggestion to you is to not go steel braided line in the rear, but the front, to soften the braking power in the rear since you’re hell bent on keeping your 14s.

Most likely, I’ll be installing my conversion next weekend. I think I know what I’m going to do with what I have.

when i flushed everything and put the drilled n slotted up front and new drums in the rear i put all braided lines on it because something was feeling "off"..turned out one of the lines was deteriorating on the inside..which is more common than you think....so ive allready got the braids

i think at this point im more curious as to how the hand brake cables and your adapter go together

[Neinris]

when i flushed everything and put the drilled n slotted up front and new drums in the rear i put all braided lines on it because something was feeling "off"..turned out one of the lines was deteriorating on the inside..which is more common than you think....so ive allready got the braids

i think at this point im more curious as to how the hand brake cables and your adapter go together

I hope this pic helps. I didn’t put the cable through the hole yet, because it’d be a bit of a challenge to remove. Now what is the concern again? Worried the cables will be too short? The mechanism pulls from the top, but it’s clocked closer to the parking brake cables. So I think they’d be just right.
Get the calipers meant for the Yaris, and the cable length will not be of any concern.

[Compeer]

I actually have all the hardware I need to do the disc brake swap, minus the brackets for the hose lines. I wanted a different approach to reduce the coupling from hardline to rubber, to hard line again, then rubber to the caliper.

Hell yeah you have been shopping, this is going to be a sweet setup!

[Neinris]

Hell yeah you have been shopping, this is going to be a sweet setup!

Yeah little by little… I had to do my research first before I pulled the trigger. ��
You guys taught me something, to not use a long one piece hose, unless it’s braided. But I think I’ll just stick with what I already have.
The bracket relocation is easy. I think I know what to do now, and hope to install next weekend. I need to use the drill press at work. ��

[Neinris]

I went ahead and bought the Yaris calipers…. :redface:

As I suspected, the caliper carrier’s bolt patterns are the same for the Corolla and Yaris. I went ahead and drilled the holes for the hub to clock the calipers at 3 and 9 o’clock. Don’t worry, if I reproduce them they won’t look like Swiss cheese… :laugh:

[Compeer]

I went ahead and bought the Yaris calipers…. :redface:

As I suspected, the caliper carrier’s bolt patterns are the same for the Corolla and Yaris. I went ahead and drilled the holes for the hub to clock the calipers at 3 and 9 o’clock. Don’t worry, if I reproduce them they won’t look like Swiss cheese… :laugh:

Yeah you can even bolt on twin pots from the BRZ levin, I was looking at some for sale. But my brakes are fucking fantastic now and i don't think I need it. Some people said the Bosch pads were not so great but these semi metalics are really nice feeling, Cofidence has gone up in the car again.

The new brakes went from under 200% to almost 300% braking by mass on the brake testing machine when I got the last warrant and the pads had not worn in yet.

[Neinris]

Yeah you can even bolt on twin pots from the BRZ levin, I was looking at some for sale. But my brakes are fucking fantastic now and i don't think I need it. Some people said the Bosch pads were not so great but these semi metalics are really nice feeling, Cofidence has gone up in the car again.

The new brakes went from under 200% to almost 300% braking by mass on the brake testing machine when I got the last warrant and the pads had not worn in yet.

I can't wait for my disc conversion to get installed this weekend. Although I don't have ABS, I know my braking confidence will also increase.

I'm adding another project, my pursuit of 5 X 114.3 PCD...

[sh0rtlife]

good thinking on the dual clocking

brz twin pots on such a lil gokart would be down right insanity....you would have to be running atleast a 245 to be able to even use them!!!!

[Neinris]

The twin pots caliper are for the front though right?

The BRZ's front rotors are 326mm in diamenter!!! But they're 5X100 PCD.

The 2nd GEN Scion xB's front rotors are only 275mm in diameter compare to the BRZ/FRS, and they're 5x114.3 PCD. I wonder how far the BRZ's front calipers will stick out when mounted on the Yaris' steering knuckles? I hope not too far out for 275mm rotors...

You'd definitely would need to get at least 16in wheels for them to fit.

I'll keep this in the back of my mind... :biggrin:

[sh0rtlife]

its not about sticking out its about bolting them onto the correct mount to bring them down to the 275 rotor

[Neinris]

its not about sticking out its about bolting them onto the correct mount to bring them down to the 275 rotor

I'm getting my threads mixed up... :laugh:

Well, that's what I kind of mean or need to know. How far will the caliper move out when it's mounted on a Yaris' steering knuckle? Will it be the same as the BRZ where you can house a 326mm rotor or will it be in like the Yaris SE/Corolla/xD? Or is there a different caliper carrier that it can be Frankenstein with and dial it for a 275mm rotor if you want to do a 5X114.3 PCD. Could I just make an adaptor plate and move out the xD calipers that I have to house 275mm rotors? But then the pads won't follow the same contour as the rotor. Would that really matter? :iono:

I've thought about using a 2nd GEN xBs steering knuckle, but looking at the holes, I don't think it'll mount to the Yaris' strut. You could probably use the xBs strut, but use the Yaris' top hat?

For the rear rotors, since it's solid, I could just mill down the xBs 279mm rotors down to 259mm, and still use the stock Yaris SE calipers. I don't think I can do that to the front rotors since they're finned. Or use the 279mm rotors, but will definitely need to install a proportioning valve, since the rear rotors are bigger.

[Neinris]

I made the brackets out of aluminum angle, I couldn’t find anything else that’s 1/16in thick. Well at least I know they won’t corrode, and they’re strong enough that I can’t fold them by hand. I cheaped out and made my own retaining clips too… :laugh:
Once I position them on the axle frame, I’ll drill holes on the base and rivet them down. Yeah I know not welded, but it should still work.
I also made two extra ones with smaller hole, incase the hoses I’m relocating are differently designed than this hose. The hose in the pic is one that will connect to the caliper.
I don’t know why the first pic is upside down… :redface:

[Compeer]

I made the brackets out of aluminum angle, I couldn’t find anything else that’s 1/16in thick. Well at least I know they won’t corrode, and they’re strong enough that I can’t fold them by hand. I cheaped out and made my own retaining clips too… :laugh:
Once I position them on the axle frame, I’ll drill holes on the base and rivet them down. Yeah I know not welded, but it should still work.
I also made two extra ones with smaller hole, incase the hoses I’m relocating are differently designed than this hose. The hose in the pic is one that will connect to the caliper.
I don’t know why the first pic is upside down… :redface:

The clips atleast need to be the original hardened spring steel, Alu cannot work as a spring.

[sh0rtlife]

The clips atleast need to be the original hardened spring steel, Alu cannot work as a spring.

exactly true, the aluminum is just going to let it go under pressure, or bend back n forth till it breaks off...it may not be "quick" but eventual inevitability

if you want "new" look for street rod hose mounts, if you want quick n dirty either cut some off a TRUCK/SUV...or even a car..tho on a car its hard to get enough materiel left to mount them

you can even look at clutch hose mounts, it only needs to fit the hose not the car, alot of the street rod ones are either studded for mounting or threaded for mounting so its easier to slap em in and be done

also aluminum on aluminum can and WILL corrode in fairly short order

[Neinris]

exactly true, the aluminum is just going to let it go under pressure, or bend back n forth till it breaks off...it may not be "quick" but eventual inevitability...


Are you talking about the clip or the mounting bracket? I agree, that the clips should be spring steel, after a few test of mounting the aluminum clips on and off, the didn't retain the bend. I just didn't want to pay the $8 per clip from Toyota. I'll see if the car parts store near me has anything similar.

If anything, the brackets will be temporary, I just want to slap the disc conversion ASAP.

[Compeer]

Are you talking about the clip or the mounting bracket? I agree, that the clips should be spring steel, after a few test of mounting the aluminum clips on and off, the didn't retain the bend. I just didn't want to pay the $8 per clip from Toyota. I'll see if the car parts store near me has anything similar.

If anything, the brackets will be temporary, I just want to slap the disc conversion ASAP.

You will have to repair the holes you drill tho, idk man this is your brakes, Do it once do it right.

The Alu bracket will brake as well not just the clip, the brake hoses move back and fourth when pressurized under braking, this is going to stress fracture then brake off the mount right where its bent. It would need a triangle welded in to stop this or for it to be a properly cast unit designed to not bend.

You can do the brake upgrade, just use the stock mount position for the trailing arm and stock brake brackets for now, Later on just move the brackets and change trailing arm position, changing the arms position only requires 10mins and a 17mm and extension and a jack.

[Neinris]

You will have to repair the holes you drill tho, idk man this is your brakes, Do it once do it right.

The Alu bracket will brake as well not just the clip, the brake hoses move back and fourth when pressurized under braking, this is going to stress fracture then brake off the mount right where its bent. It would need a triangle welded in to stop this or for it to be a properly cast unit designed to not bend.

You can do the brake upgrade, just use the stock mount position for the trailing arm and stock brake brackets for now, Later on just move the brackets and change trailing arm position, changing the arms position only requires 10mins and a 17mm and extension and a jack.

Fine, fine… I’ve waited almost 2 years for this rear disc conversion, what’s another week of wait to do them properly. I’ll make the steel brackets at work this week and weld them next weekend.
I painted my front calipers black, but I think I’ll paint them red along with the rear to make them look sportier. :tongue:

[Compeer]

Fine, fine… I’ve waited almost 2 years for this rear disc conversion, what’s another week of wait to do them properly. I’ll make the steel brackets at work this week and weld them next weekend.
I painted my front calipers black, but I think I’ll paint them red along with the rear to make them look sportier. :tongue:

Hell yeah, and I know how you feel, I seen the RS crashed and wanted to do teh brake upgrade and then the car got dismantled. Took me 2 years to find another donor car to do my own swap.

Its a minor upgrade for normal driving but if you live in the mountains or you drive aggressivly/take it to the track then this makes the car feels so much nicer. I had to do a hard stop yesterday on the motorway and she stopped on a dime, she will stop even better with the other suspension back in, just gotta bring myself to do another day out installing it all.

[Neinris]

Hell yeah, and I know how you feel, I seen the RS crashed and wanted to do teh brake upgrade and then the car got dismantled. Took me 2 years to find another donor car to do my own swap.

Its a minor upgrade for normal driving but if you live in the mountains or you drive aggressivly/take it to the track then this makes the car feels so much nicer. I had to do a hard stop yesterday on the motorway and she stopped on a dime, she will stop even better with the other suspension back in, just gotta bring myself to do another day out installing it all.

Have you ever thought of relocating the brake brackets that are hitting and move the trailing arms to the top mounting holes again?

I found some clippings of the stainless steel rails from work, they're 1/16 of an inch (about 1.6mm) thick, just what I'm looking for to make the brackets out of. I've made one bracket so far, while I'm on lunch break. :redface:

[Neinris]

Ok, I’ve made the brackets from steel. I drilled holes in the bottom where it’s going to mount so that the weld would hold better. Maybe a little over kill… :redface:
I’m hoping that I can convince my friend to come to my house and bring his welder, instead of me coming to his house. It’s forecasted that there’d be freezing rain where he lives this Saturday, but not where I live, although it’s still going to be cold, but Sunday weather will be better. I might weld on Saturday and install everything on Sunday.

[Compeer]

Have you ever thought of relocating the brake brackets that are hitting and move the trailing arms to the top mounting holes again?

I found some clippings of the stainless steel rails from work, they're 1/16 of an inch (about 1.6mm) thick, just what I'm looking for to make the brackets out of. I've made one bracket so far, while I'm on lunch break. :redface:

Yeah but its very ilegal to do so, even moving the mount position is ilegal here.
I would need to get the brakes certed again because if the mechanic notices its "modified" it gets marked as modified and I have to get the entire cars brakes certed...NOT EASY.

Why arent you reusing the original brakets after cutting them off old position?

[Neinris]

Yeah but its very ilegal to do so, even moving the mount position is ilegal here.
I would need to get the brakes certed again because if the mechanic notices its "modified" it gets marked as modified and I have to get the entire cars brakes certed...NOT EASY.

Why arent you reusing the original brakets after cutting them off old position?
That sucks. You can't even just rotate them even just a little towards the inside so they won't hit the frame?

It's wasn't that hard to make the brackets, and it would be easier to just cut off the original ones that I need to relocate with a hacksaw than grind off the welds, and I don't have a grinding wheel. :redface:

Besides, I need to make two additional brackets to weld near the rear wheel hub for the hose that goes to the calipers, remember those don't exist on the drum brake version.

My friend said he'd come here on Saturday, so it's game on this weekend!!!

[Neinris]

This project is making me lose sleep... :laugh:

Last night, I was thinking too much about how or what I should be doing this weekend. I think I'll remove the axle frame from the car just to be safe, I don't any sparks near the gas tank, and I just filled up late last week. Not just that, also so I can get a good angle on the brackets I'm going to weld.
I'm going to buy an angle grinder, I found one for $50 USD, I'll try to remove the existing bracket that needs to be relocated and see if I can reuse them, also clean off the other spots where the other brackets are going to be welded down.
I'm debating if I should use the Yaris calipers or the Corolla calipers. It will depend on how the parking brake cable will be routed if the Corolla calipers are used. If you think about it, both the parking brake cable and brake line are on the top for the Corolla, which would make it easier to replace the brake pads, you just need to unbolt the bottom bolt and swing it up.

[Compeer]

This project is making me lose sleep... :laugh:

Last night, I was thinking too much about how or what I should be doing this weekend. I think I'll remove the axle frame from the car just to be safe, I don't any sparks near the gas tank, and I just filled up late last week. Not just that, also so I can get a good angle on the brackets I'm going to weld.
I'm going to buy an angle grinder, I found one for $50 USD, I'll try to remove the existing bracket that needs to be relocated and see if I can reuse them, also clean off the other spots where the other brackets are going to be welded down.
I'm debating if I should use the Yaris calipers or the Corolla calipers. It will depend on how the parking brake cable will be routed if the Corolla calipers are used. If you think about it, both the parking brake cable and brake line are on the top for the Corolla, which would make it easier to replace the brake pads, you just need to unbolt the bottom bolt and swing it up.

The Yaris brakes are pretty easy to do the brake job on, hardest part is twisting in the calipers (use a pair of needle nose pliers to twist them in)

I think Id go with the yaris set incase the caliper diameter is larger on the corolla calipers, No reason to mix and max brakes when you have the correct front and rear matching set which will give it the correct brake proportion.

I always go with "keep it simple stupid" and its a no brainer to install the matching front and rear brakes.

[Neinris]

The Yaris brakes are pretty easy to do the brake job on, hardest part is twisting in the calipers (use a pair of needle nose pliers to twist them in)

I think Id go with the yaris set incase the caliper diameter is larger on the corolla calipers, No reason to mix and max brakes when you have the correct front and rear matching set which will give it the correct brake proportion.

I always go with "keep it simple stupid" and its a no brainer to install the matching front and rear brakes.

Remember, the adaptor plates were originally meant for the Corolla calipers, and I knew that the Yaris calipers would also works, because their rotors diameters are the same, therefore the caliper diameter are also the same. It's just that the Yaris' calipers are clocked directly to the rear (3 & 9 o'clock), while the Corolla's are clocked up (around 2 & 10 o'clock). And the Corolla's parking brake cable will be mounted on the top, farther away from the road and dirt. Less chance of seizing?

I thought of the same thing as you said, that's why I went ahead and bought the Yaris calipers, but I got to thinking how much convenient the Corolla's design is. I will show everyone what I mean how much easier it is to replace the brake pads when the Corolla calipers are used. Again, only if the route for the parking brake cables works out. We'll see this weekend.

[Compeer]

Remember, the adaptor plates were originally meant for the Corolla calipers, and I knew that the Yaris calipers would also works, because their rotors diameters are the same, therefore the caliper diameter are also the same. It's just that the Yaris' calipers are clocked directly to the rear (3 & 9 o'clock), while the Corolla's are clocked up (around 2 & 10 o'clock). And the Corolla's parking brake cable will be mounted on the top, farther away from the road and dirt. Less chance of seizing?

I thought of the same thing as you said, that's why I went ahead and bought the Yaris calipers, but I got to thinking how much convenient the Corolla's design is. I will show everyone what I mean how much easier it is to replace the brake pads when the Corolla calipers are used. Again, only if the route for the parking brake cables works out. We'll see this weekend.

Yeah just go yari brakes they are oem the parts will fit, we know they work mint, will have hose connections at correct angles too and yeah the handbrakes..Keep it simple hahaha

[Neinris]

Yeah just go yari brakes they are oem the parts will fit, we know they work mint, will have hose connections at correct angles too and yeah the handbrakes..Keep it simple hahaha

Well, I’m really stubborn and likes going against the grain sometimes. :biggrin:
I got home early from work today and started some of the work, but quickly ran out of daylight. :frown:
She’s dialed for the Corolla caliper, I’ll be testing how the cables will be routed tomorrow.
62502
I hope it doesn’t snow tomorrow. Once I fit and test the parking cables then I’ll decide which calipers to use.
I did get to put one of the parking cable on, I had to swap two brackets from the old one.

[Compeer]

Weight them, they have the same caliper diameter and rotor which means the braking force is equal so weigh them and use the lighter set, we already lost some performance with the disc brake swap already especially considering they are pretty huge for the size of the car, don't want to loose more for no real reason. Im going to get a light weight 15" space saver spare tire and remove the rear seats and rear seat belts to try to make up for the added weight. Plan to put a plyboard bed in cut to shape with a hatch for the spare tire because Ineed to fit a set of wheels in for autocrossing eventually.

Builds looking good so far anyway, get her done!

[Neinris]

Weight them, they have the same caliper diameter and rotor which means the braking force is equal so weigh them and use the lighter set, we already lost some performance with the disc brake swap already especially considering they are pretty huge for the size of the car, don't want to loose more for no real reason. Im going to get a light weight 15" space saver spare tire and remove the rear seats and rear seat belts to try to make up for the added weight. Plan to put a plyboard bed in cut to shape with a hatch for the spare tire because Ineed to fit a set of wheels in for autocrossing eventually.

Builds looking good so far anyway, get her done!

The Yaris is very front heavy, so some weight in the back would help even it out. :laugh:

The parking brake cable routed just fine for the Corolla caliper, but I’m not decided yet to go with them.
62506
I had some errands today, so I didn’t get to finish the install, but I did managed to remove the rear axle frame and install the parking brake cables. My friend didn’t show to weld the brackets, because the weather was too cold for him. :rolleyes:
I have no choice but to finish tomorrow.

[Neinris]

She’s finally done! I went with the Yaris calipers after all. I’m going to redo where the relocated brackets are, I think I’ll put on the center bar of the H, but that won’t be happening any time soon. My friend is going on a trip, and he left today with his welder. I should have said yes when he asked if I want to borrow it for a bit.
The stopping force comparison would not be fair if I’m comparing to the drum brakes, because I also replaced the front brake pads and changed out the brake fluid. All I’m going to say is I’m very happy with the results.
Here’s the before and after pics:

[Neinris]

between your thread and my perpetual needing to re-adjust the drums..has got me re-thinking disc rears...

now hear me out...stock front yaris rotors put on the rear using XB rear calipers..i belive i could keep my 14inch aluminum wheels..the XB rear calipers solve the E-brake issue without the need for a drum hat rotor....tho i suspect id need an adapter mounting plate similar to yours but 1/4 inch of more offset in the rear of a stock yaris drum beam would square up the wheelbase nicely

What issues where you having that you had to re-adjust your drums often? Apparently my drum brakes would over tighten themselves over time, and was causing a bit more of a drag than normal. With the disc brakes, I noticed that I'm able to accelerate a little bit more quicker now, and my MPG has gone up from 31 to 31.5 in just two days!!! That's with my "normal" driving. :biggrin: We'll see how much better it'd get by the end of the week.

[Compeer]

She’s finally done! I went with the Yaris calipers after all. I’m going to redo where the relocated brackets are, I think I’ll put on the center bar of the H, but that won’t be happening any time soon. My friend is going on a trip, and he left today with his welder. I should have said yes when he asked if I want to borrow it for a bit.
The stopping force comparison would not be fair if I’m comparing to the drum brakes, because I also replaced the front brake pads and changed out the brake fluid. All I’m going to say is I’m very happy with the results.
Here’s the before and after pics:

Looking good bro :burnrubber:

[Neinris]

Looking good bro :burnrubber:

Thanks Bro! I'm glad it's finally done. I was losing sleep a week prior because I kept thinking about the install. :laugh:

I think I'll share another guide how to do a disc conversion, to include PN from Toyota.

I think my friend is willing to produce the back plates for $75 USD if anyone's interested, plus shipping.

[Compeer]

Thanks Bro! I'm glad it's finally done. I was losing sleep a week prior because I kept thinking about the install. :laugh:

I think I'll share another guide how to do a disc conversion, to include PN from Toyota.

I think my friend is willing to produce the back plates for $75 USD if anyone's interested, plus shipping.

Very nice result!

[Neinris]

The rear wheels sticks out about even with the front now. I’ve yet to paint the front calipers red, or maybe I’ll paint the rear black like the front. Not sure which would look better.

[Neinris]

I forgot to put into account that the drum brake back plates has some thickness to them, about 2mm. With the 1/4in plates (6.35mm), I’ve only added 4.35mm to each sides. The front are still .65mm wider at each side, 1.3mm wider total.
62530
The back of the hub dowel?, I don’t know what to call it, protrudes about 8.15mm, about .5mm is taken by the splash guard, so there’s still at least 1.3mm inserted in the axle beam. So the weight are not all on the bolts.
62531

[remcafee]

glad you finally got your rear discs done, never adjust and clean stupid drums ever again!

[Neinris]

glad you finally got your rear discs done, never adjust and clean stupid drums ever again!

Thanks remcafee… you were the first to reply to my thread 2 years ago almost to the day. I appreciate your inputs and assistance, along with everyone else.

Most have mentioned that these tiny cars don’t need rear disc brakes. That might be true, but it’d be so much more convenient to replace the brake pads now, and like you mentioned, no more adjusting and cleaning the stupid drums ever again!

The other factors I want to share are the fact that my fuel consumption has improved, not because the car is lighter now, but the fact that my drum brakes apparently overtightened themselves, which was causing some drag. Also, I’m no longer staying in 4th gear anticipating having to stop in my city driving.
I do have to get used to how quickly I stop now, before I was afraid of hitting the car in front of me, now I’m afraid of cars rear ending me… :redface:
I’ve mentioned that I don’t have ABS, I've tested if my rear wheels would lock up first, but I couldn’t get the wheels to lock up at all, granted I was only going 45mph. I’ll try to test again some other time.

The other “alternative” that I want to present are the fact that the Prius and 2nd Gen Scion xB (xB2) has the same mounting holes bolt pattern like the Yaris. If I’m a betting man, the rear axle beam from those vehicles will fit in the Yaris. So they present as an alternate to the Yaris SE rear axle beam.
My new neighbor has an xB2, I’ll see if he’s willing that I’d take measurements and take pics. I’ll post pics here if or when I get the chance.
Next project is 5X114.3 PCD conversion. :biggrin:

Oh, and I went ahead and painted the front calipers red. I took the brake pads off and put a bag over the rotors.

[Compeer]

Thanks remcafee… you were the first to reply to my thread 2 years ago almost to the day. I appreciate your inputs and assistance, along with everyone else.

Most have mentioned that these tiny cars don’t need rear disc brakes. That might be true, but it’d be so much more convenient to replace the brake pads now, and like you mentioned, no more adjusting and cleaning the stupid drums ever again!

The other factors I want to share are the fact that my fuel consumption has improved, not because the car is lighter now, but the fact that my drum brakes apparently overtightened themselves, which was causing some drag. Also, I’m no longer staying in 4th gear anticipating having to stop in my city driving.
I do have to get used to how quickly I stop now, before I was afraid of hitting the car in front of me, now I’m afraid of cars rear ending me… :redface:
I’ve mentioned that I don’t have ABS, I've tested if my rear wheels would lock up first, but I couldn’t get the wheels to lock up at all, granted I was only going 45mph. I’ll try to test again some other time.

The other “alternative” that I want to present are the fact that the Prius and 2nd Gen Scion xB (xB2) has the same mounting holes bolt pattern like the Yaris. If I’m a betting man, the rear axle beam from those vehicles will fit in the Yaris. So they present as an alternate to the Yaris SE rear axle beam.
My new neighbor has an xB2, I’ll see if he’s willing that I’d take measurements and take pics. I’ll post pics here if or when I get the chance.
Next project is 5X114.3 PCD conversion. :biggrin:

Oh, and I went ahead and painted the front calipers red. I took the brake pads off and put a bag over the rotors.

Looks good, Ive been lazy and haven't painted mine yet...not sure what colour Id do other than red.

[Neinris]

I was hoping to drop this comment yesterday to commemorate the two year start date of this project, but I got too busy.

Anyway, I know there's other threads out there that discusses what parts are required, etc., here's my version of what's required:

Rear disc conversion
Parts required:
Yaris SE parking brake cables (right) 4643052360 (left) 4642052370 [will require swapping hangers if not the same GEN Yaris]
Yaris SE rear axle beam 4210152160 or adaptor plates made
Yaris SE hard brake lines (right) 4732352110 (left) 4732452100
Brake hose retaining clips (2) 9046808035
Yaris SE brake hoses (2) 9094702E11
Brake dust shield (right) 4780352030 (left) 4780452030 [optional]
Yaris SE rear rotors (2) 4243152080
Toyota hub bearing mounting bolts (8) 90119A0350 [longer w/ washer (cut the washers out), not required if doing axle swap]
Yaris caliper carriers/bracket (2) 4782112151
Disc brake caliper pins (4) 4783512150
Bush dust boots (4) 4787512150
Caliper bracket mounting bolts (4) 91552C1035 [require washers if using adaptor plate vise axle swap]
Yaris Calipers (right) 4783052161 (left) 4785052161
Caliper mounting bolts (4) 90012AA102
Yaris SE rear brake pads (set) 0446652170
Yaris SE rear brake pads shim kit (set) 0494652080
Yaris SE rear brake pads anti-rattle clips (set) 0194812060
Toyota brake caliper banjo bolts (2) 90401A0001
Toyota caliper copper crush rings (4) 4738950020
Brake fluid of your choice
Note, these are all Toyota part numbers (according to parts.toyota.com), which are expensive. Aftermarket can be found for much cheaper and sometimes much complete where you don’t have to buy them piece by piece. I used a combination of RockAuto.com and EBay to get my parts. I was in no rush to get them, I did this over time when I have a little bit of money for myself, and so my pocket didn’t take too much toll.
Another option is you could go to the junkyard and pull them. If you’re looking for calipers in the junkyard, you could actually grab the 2nd GEN Scion xB’s (xB2) calipers, but use the Corolla rear caliper brackets, the xB2’s caliper brackets extends farther out to accommodate the 279mm diameter rotors, Yaris and Corolla rear rotors are only 259mm. The first pic right below shows the Corolla, xB2, and Yaris' calipers, then the Yaris's caliper over the xB2's caliper, to show that the bracket is extended out.
62549
62550
Also, I want to say that the Scion xB2 and Prius rear axle beam could probably be used as a replacement for the Yaris SE, but I'm not yet 100% sure at this point. I want to point out that the mounting hole bolt patterns are the same as the Yaris' rear wheel hubs.

If you’re not doing an axle swap, a couple of brackets must be made and welded on the axle beam for the rear most brake hoses that bolts to the calipers (sorry I don't have a picture of how I did this). What I did was mockup the locations by installing the hard lines first, then marked where the spots would be as close as possible to the stock locations. I believe that the brackets that I made are 1.5in (48mm) wide by 2in long (51mm), and 1/16in (1.6mm) thick with ¾in hole (19mm).
For the adaptor plates, I recommend using a ¼ inch or 6mm thick steel plates. The exact dimensions of the ones I used are 6 inch X 6 inch X ¼ inch, this is strong enough, and any thicker would make the center bore dowel not rest into the axle frame, which would make the bolts bear all the weight. In my previous post, I measured the center bore dowel at about 8.15mm. With the ¼ inch steel plate added with the thickness of the slash guard, the thickness is about 6.85mm, that leaves about 1.3mm of protrusion through the back, to rest in the axle beam's hole.
62552

My previous calculations were wrong, when I said how much the rear track got wider, I forgot to include the splash guard, which are about .5mm thick. The original drum brake back plates were 2mm thick. So subtract that from 6.85mm, which means the rear got pushed out 4.85mm on each side, making the front still .3mm wider, not 1.3mm like I previously said. I could still be wrong, because I didn't really got to measure the splash guards. All I know is that the wheel hub's center bore dowels still has some protrusion, because they were not sliding off even without any of the bolts in yet.
Maybe when I replace the hubs to the 5X114.3 PCD, I'd hope to remember to take the measurements of the splash guards, then I'll see how much the rear track really got pushed out. Anyway that's another project... :biggrin:

I used the Corolla’s rear hub mounting bolts, since they are longer and I got them from when I initially was going to use the Corolla’s adaptor plate, but they will require cutting out the washers.
62551

To make the holes and bolt pattern on the adaptor plate, I had the Corolla back plate as a template, but one out of a cardboard can easily be made, I recommend something a bit thicker material.
Start with a 74mm hole, put your wheel hub in it and drill out the mounting holes, I believe they were 12mm if I remember correctly. I bought new wheels hubs, so I used them as a template, so I didn't have to remove the ones out of my Yaris. As you drill one out, put a bolt in it's place so that the hub don't move/swivel and get a more accurate pattern. Leave the hub in place, and fit the rotor. Now mock the caliper with the bracket and mark where the it would mount on to the plate. I don't remember the bolt hole size for the caliper bracket, I think 10mm. Then transfer that to the adaptor plate and Voila!!! Or send me a PM and you can have a pair for $75 plus shipping. :redface:
I hope someone finds this useful.

[sh0rtlife]

so i found out something intresting

the XD uses the same rear beam as a yaris/prius but is 5x114, and...its drum
front suspension is all yaris..except the hubs..
i was digging thru toyotas own parts sheets, as i got a notice that theres an XD thats in a local yard....and its a "release" RS..and i wonder if the relese got a rear sway...same part as yaris btw

what im unsure of is if the XD drums are bigger than the yaris oe drums..other than being 5 lug

but what this tells me with 100% certanty is if you want to go 5lug the XD parts will get you there....shit i need to look at the front rotors and see if the cross referance to a rolla/camry/xb

even toyota DOES NOT cross referance the XB beam to anything but XB....but that could simply be the "tabs" and "ears" for disc brakes....as soon as its not a freak show of weather ill get you measurements off our patchwork xb-2

ROTOR ..rolla matrix XD...caliper rolla XD......

[Neinris]

so i found out something intresting

the XD uses the same rear beam as a yaris/prius but is 5x114, and...its drum
front suspension is all yaris..except the hubs..
i was digging thru toyotas own parts sheets, as i got a notice that theres an XD thats in a local yard....and its a "release" RS..and i wonder if the relese got a rear sway...same part as yaris btw

what im unsure of is if the XD drums are bigger than the yaris oe drums..other than being 5 lug

but what this tells me with 100% certanty is if you want to go 5lug the XD parts will get you there....shit i need to look at the front rotors and see if the cross referance to a rolla/camry/xb

even toyota DOES NOT cross referance the XB beam to anything but XB....but that could simply be the "tabs" and "ears" for disc brakes....as soon as its not a freak show of weather ill get you measurements off our patchwork xb-2

ROTOR ..rolla matrix XD...caliper rolla XD......

We're getting mixed up with my other thread... :laugh: Thanks for looking into this, but I already know that Yaris and xD shares the same suspension and that the rear beam from the xD will fit the Yaris, but which Prius are you referring to? Is it the Prius C with rear drum brakes or the regular Prius with rear disc brakes? The xDs have bigger rear drum brakes, ID is 229mm, Yaris is 200mm. I'm using xD front calipers for my bigger SE front rotors, I believe they're the same the Corolla's and maybe even the xB2 because they all the the same 275mm front rotors.
The xDs are 5X100 PCD and so are Corollas, I want 5X114.3 PCD like xB2 and Camry. So no, I'm not using the xD set up.
One of the members here, myfirstyota, did an engine swap and also swapped temporarily to the xD front knuckle. See the red car in first post (if you can see the pics, I can't for some reason see his posted pics when I'm at work, but I can see other people's posted pics).

https://www.yarisworld.com/forums/showthread.php?t=61427

[sh0rtlife]

took measurements off the xb2 as i had time and right now im going to say that i think its too wide...i couldnt compare to the yaris but i could compare to the xb1 on the lift and its 5 inches wider at the lug pad....ill happly post the numbers later if you want

hell the springpockets are 6inches deep too!!!!..64ish wide

[Neinris]

took measurements off the xb2 as i had time and right now im going to say that i think its too wide...i couldnt compare to the yaris but i could compare to the xb1 on the lift and its 5 inches wider at the lug pad....ill happly post the numbers later if you want

hell the springpockets are 6inches deep too!!!!..64ish wide

Yes please, post the measurements. I'd appreciate it very much.
Is the xB1's rear axle frame the same as the Yaris'?
Google says that xB2 rear track width is 59.8" and Yaris 57.5 - 57.9". xBs stock wheels and tires are 205/55R16 on 6.5 inch wide wheels, compare to Yaris 185/60R15 on 5.5 inch wide wheels.

[sh0rtlife]

Yes please, post the measurements. I'd appreciate it very much.
Is the xB1's rear axle frame the same as the Yaris'?
Google says that xB2 rear track width is 59.8" and Yaris 57.5 - 57.9". xBs stock wheels and tires are 205/55R16 on 6.5 inch wide wheels, compare to Yaris 185/60R15 on 5.5 inch wide wheels.

ok so all of this is off of an 08 xb

these numbers are tricky as hell to get with the axle in place..so they are kinda rough and somewhat eyeballed

center of hub to top of caliper 6.5 +.5 hump at bleed screw
3 inch body mount bushing
centerline of body mount bolt to centerline of the hub 15
lugpad to lug pad 63.5(they seem to be fixing the track with wheel offset?)
spring pocket base to top of axle 5.5 inches deep
body mount bolt head to hub face centerline 8
outter edge of body mount to mount seems to be about 47..its hard to get exact with the fuel tank in

honestly im waiting to find a yaris and an xb in the same yard ...then i can pull em both set em next to eachother and see, hell i can even see if it bolts in.....we know the hubs do

[Neinris]

ok so all of this is off of an 08 xb

these numbers are tricky as hell to get with the axle in place..so they are kinda rough and somewhat eyeballed

center of hub to top of caliper 6.5 +.5 hump at bleed screw
3 inch body mount bushing
centerline of body mount bolt to centerline of the hub 15
lugpad to lug pad 63.5(they seem to be fixing the track with wheel offset?)
spring pocket base to top of axle 5.5 inches deep
body mount bolt head to hub face centerline 8
outter edge of body mount to mount seems to be about 47..its hard to get exact with the fuel tank in

honestly im waiting to find a yaris and an xb in the same yard ...then i can pull em both set em next to eachother and see, hell i can even see if it bolts in.....we know the hubs do

Yeah, I think it's better to just compare them side by side.

[sh0rtlife]

Yeah, I think it's better to just compare them side by side.

pretty sure they are..but...is a sedan and hatch the same beam?
what about the XA beam?
what about echo?

im asking specificaly as my most local yard has an 09 xb and an xa

and i know of another yard that "might" have 08 xb and a sedan..tho said sedan might be an echo?....

basicly trying to find alternative units that are the same unit to use as comparisons...since yaris, and xb dont seem to show up at the same time or be around long enough to overlap

[Neinris]

pretty sure they are..but...is a sedan and hatch the same beam?
what about the XA beam?
what about echo?

im asking specificaly as my most local yard has an 09 xb and an xa

and i know of another yard that "might" have 08 xb and a sedan..tho said sedan might be an echo?....

basicly trying to find alternative units that are the same unit to use as comparisons...since yaris, and xb dont seem to show up at the same time or be around long enough to overlap

I'm not 100% about the xAs, I'll do some research. Do you see any xD? Those a the same as the Yaris.

[sh0rtlife]

I'm not 100% about the xAs, I'll do some research. Do you see any xD? Those a the same as the Yaris.

i wish....theres one "forsale" in teh yard that they want WAY too much for that WILL end up in the yard...question is will the xb2 still be there when it does.....i want the mounts n stuff for the 1.8 swap

[sh0rtlife]

local yard has an XD and an XB1 hitting the yard soo...so if they hit while the XB2 is still in the yard i can compare those if we can verify that either of them is the same as a yaris

on a side note..since i had to pull a hub off the xb2 out there....i made a note, if someone wanted discs on a quick n dirty you could cut off the axle ends, grind em flush, get longer bolts, and just sandwich those plates into your existing axle tube..giving you 1/2inch offset and disc brakes all in one fell swoop....the hubs are just long to still locate thru the new flange and into the one still welded to your axle

now i need to find a 4x100 version to do some 14innch wheel clearance tests!!!!!!....prius's are NOT hitting my yards and i was unde rthe impression thats the only place to get the 4x100 factory discs(aside form a yaris RS which may as well not exist)

[Neinris]

local yard has an XD and an XB1 hitting the yard soo...so if they hit while the XB2 is still in the yard i can compare those if we can verify that either of them is the same as a yaris

on a side note..since i had to pull a hub off the xb2 out there....i made a note, if someone wanted discs on a quick n dirty you could cut off the axle ends, grind em flush, get longer bolts, and just sandwich those plates into your existing axle tube..giving you 1/2inch offset and disc brakes all in one fell swoop....the hubs are just long to still locate thru the new flange and into the one still welded to your axle

now i need to find a 4x100 version to do some 14innch wheel clearance tests!!!!!!....prius's are NOT hitting my yards and i was unde rthe impression thats the only place to get the 4x100 factory discs(aside form a yaris RS which may as well not exist)

The mounting plates my friend made me is the quickest and dirtiest way for a rear disc conversion. LOL!!!
I'm sorry I could not find a 14" wheel to try and see if it'd fit, but I'm not sure that it'd be big enough. Unless the mounting holes for the caliper bracket are moved in closer to the center of the hub, probably 10mm??? But you might have to mill down the rear rotors as well to make them fit.

[sh0rtlife]

so for the axle comparison..are you 100% sure the xb1 axle is the same as a yaris...ive only eyeballed them but my eyes are telling me they are not the same...the xb1 actualy looks more "delicate" than the yaris unit

currently in the yard neer me is an xb1, xa, xb2, and an XD pending.....no yaris

[Neinris]

so for the axle comparison..are you 100% sure the xb1 axle is the same as a yaris...ive only eyeballed them but my eyes are telling me they are not the same...the xb1 actualy looks more "delicate" than the yaris unit

currently in the yard neer me is an xb1, xa, xb2, and an XD pending.....no yaris

I was actually asking the same thing, if the xB1 is the same as the Yaris, but I know that the xD is the same as the Yaris.

[sh0rtlife]

I was actually asking the same thing, if the xB1 is the same as the Yaris, but I know that the xD is the same as the Yaris.

theres 2 xd's "pending" they have been racked n drained..so i just hope they get out in the yard befor the xb2 goes

ive verifyed the XB1 is NOT the same as the yaris, after looking at the echo it "might" be the same as the echo, checked the XA and it looks to also be the xb1/echo style, but again the spring pockets were different

since i have an xb1 on the lift ive compared it to the yaris and can confirm its NOT the same, tho ive not checked the measurements, its visualy different both in how the unit looks but the spring pocket size and depth...

thats not to say it couldnt be a bolt in.....

next chance i get tho im going to get out to the yard and pull the XB2 axle and atleast stash it in the XB1...and i may see if it bolts up...

im currently checking the yard every couple days waiting on the XD's...i want all the engine swap bits!!!!

yes i currently own 07 yaris, 08 xb, 06 xb.....so im kinda lookin to see what tweaks i can do to the xb1 as well.....

something of note tho..the xb1 looks to have alot of built in rear camber...if someone were looking for camber that would be a way to get it if the arms swap

[Neinris]

theres 2 xd's "pending" they have been racked n drained..so i just hope they get out in the yard befor the xb2 goes

ive verifyed the XB1 is NOT the same as the yaris, after looking at the echo it "might" be the same as the echo, checked the XA and it looks to also be the xb1/echo style, but again the spring pockets were different

since i have an xb1 on the lift ive compared it to the yaris and can confirm its NOT the same, tho ive not checked the measurements, its visualy different both in how the unit looks but the spring pocket size and depth...

thats not to say it couldnt be a bolt in.....

next chance i get tho im going to get out to the yard and pull the XB2 axle and atleast stash it in the XB1...and i may see if it bolts up...

im currently checking the yard every couple days waiting on the XD's...i want all the engine swap bits!!!!

yes i currently own 07 yaris, 08 xb, 06 xb.....so im kinda lookin to see what tweaks i can do to the xb1 as well.....

something of note tho..the xb1 looks to have alot of built in rear camber...if someone were looking for camber that would be a way to get it if the arms swap

Thanks for all the ongoing research. I really really appreciate it, and I'm sure others who would want to know about an alternative rear axle frame for a rear disc conversion.

Please continue the hard work.

[tayxas]

I was hoping to drop this comment yesterday to commemorate the two year start date of this project, but I got too busy.

Anyway, I know there's other threads out there that discusses what parts are required, etc., here's my version of what's required:



Hey Neinris, glad I found your thread. Are you willing to reproduce a set of those brackets? SE rear beams are rare and pricey. Would rather go this route.

[Neinris]

Hey Neinris, glad I found your thread. Are you willing to reproduce a set of those brackets? SE rear beams are rare and pricey. Would rather go this route.

Greetings Tayxas! My apologies I have not been active here for a bit. Other hobbies are taking over my time. I still have other plans for my Yaris.

Anyway, I'll ask my friend if he'd be willing to make another set if you're still interested.