Rear Drum to Disc Brake Conversion

[Mark-UPI]

Hey guys, my name is Mark, and I am trying to gauge to see how much interest there might be in a new Rear Drum to Disc Brake Conversion kit.

There is a new company that is offering a completely new kit that switches your rear drums to rear discs. The parking brake still utilizes the drum system though. I believe that this kit is all inclusive, meaning, that everything that is needed to do the conversion is all included in 1 package.

I was just trying to see if there was any interest in the Yaris world to begin with. If you guys have any questions, please post them here, and I'll definitely answer them to my best ability.

Thanks!

[sheekeebut]

I considered the runstop ones at MI, but unless you have standard (based off an OEM part, preferably from fronts) pads and rotors that will fit them, I will reluctantly stick with my drums.

[ilikerice]

Yea, what Sheekeebut said, Micro Image sell them. To be honest, I am reluctant to upgrade to that style because I want to get rid of the drums altogether. I am still searching for JDM rear disc from overseas because they utilize the caliper for the hand brake instead of a drum hidden behind the back.

[Kar98]

If you need somebody locally to get it done for free and then heap praise about your company in all the forums...

http://i.imgur.com/GC8tud7.jpg

[RagnaCaT]

Intrested it has to look OEM and the rear disc doesn't look pretty being way larger than the front... Must accept 15"
You should look in to non drum setups scion XB uses tokico calibers with non drum ebrakes...
Also look in to selling half kits $800 dollar kits fail against a 100 find it yourself type youll have less stock and will sell more brackets even to people that don't even end up finishing the kit... I've seen this in the Suzuki Samurai forums people prefer spending more money getting the parts little by little than dropping less money on a single purchase.
But thats my opinion


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[ilikerice]

Intrested it has to look OEM and the rear disc doesn't look pretty being way larger than the front... Must accept 15"
You should look in to non drum setups scion XB uses tokico calibers with non drum ebrakes...
Also look in to selling half kits $800 dollar kits fail against a 100 find it yourself type youll have less stock and will sell more brackets even to people that don't even end up finishing the kit... I've seen this in the Suzuki Samurai forums people prefer spending more money getting the parts little by little than dropping less money on a single purchase.
But thats my opinion


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This is true. I can hide explain several $100 purchases over 8 months rather than 1 large purchase for $800 to my wife. :laugh:

[Mark-UPI]

Thanks for all the great feedback. I'll definitely take this back and let the company know what people are asking for.

Keep it coming!

[enviri]

the biggest thing that's different with the drum equipped yaris beam and the one equipped with rear disc is taht the mounting plate for the hub also has accommodations to mount a rear caliper. it gets rid of the drum completely. hubs are identical. fab a caliper adapter plate, disc backing plate, and get some calipers and rear discs from oem 2012+ se. if you wanna go lightweight you can fab taht too.
the ebrake cable can be made or use oem yaris SE cables. the stock diameter for rear discs is 260mm. It might look funny with the front 255mm yaris base models tho :P

[ezhacker1]

the rear disc axle rotor looks so tiny. But im on 17in rims. I know a bigger rotor doesnt really do anything and its the bigger caliper and pads that matter... Ill wait till i need brake pad change. Enviri, do you have bigger rotors?

[enviri]

no i dont. i use 16s like a sensible person lololol...unless you're talking about the fronts, then, yes i am using bigger 275mm rotors on matrix/corolla/XD calipers. direct bolt.

[RagnaCaT]

Enviri you can't use 15" rims with the front rotors??? What dics did you use?


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[enviri]

you can use 15" with the front rotors. i'm using them now for snow time. You use 2012+ Yaris SE rotors (43152-52130)

[RagnaCaT]

Great I got some light 15" wheels for the track and if I upgrade the brakes don't want to loose that... I got to rethink brakes I wasted a pair of pads in less than a year


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[nortonfb]

Are you saying you can use a larger rotor without changing the stock caliber?
No mods?
Norton

[RagnaCaT]

Nortonfb no you need corolla, matrix or XD caliper


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[RagnaCaT]

I think that if they use XB2 calipers it would be more easy to source than a uncommonly Yaris SE....


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[enviri]

yaris se calipers are actually physically smaller in size, and as far as i know, bespoke to the car, hence why i went to the corolla family and xd front calipers...more avail.

[RagnaCaT]

Just in case I was refering ti the rears

SE is not sold in PUERTO RICO.... But I got so lucky that they opened an advance auto a month ago and 1 set of each came in the new stock picked them up today fronts and rear since it not they wont stock up again you never know if I get to invent someting


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[KCALB SIRAY]

Hey guys, my name is Mark, and I am trying to gauge to see how much interest there might be in a new Rear Drum to Disc Brake Conversion kit.

There is a new company that is offering a completely new kit that switches your rear drums to rear discs. The parking brake still utilizes the drum system though. I believe that this kit is all inclusive, meaning, that everything that is needed to do the conversion is all included in 1 package.

I was just trying to see if there was any interest in the Yaris world to begin with. If you guys have any questions, please post them here, and I'll definitely answer them to my best ability.

Thanks!

You said "There is a new company..."

Are you the company?
Are you representing the company? I ask because you were gauging interest but don't have the particulars.
Is this a group buy offer?
What is the name of the company?
Are they located in the USA or outside the country?
If outside of the USA what is the country of the company and manufacturer of the products?

[MUSKOKA800]

I'd be interested if the kit would work in conjunction with my sedans ABS system. Surely parts from another Yota or Scion could be utilized. Lot's of upscale Yaris exist overseas.

[RagnaCaT]

Thanks enviri!!!http://tapatalk.imageshack.com/v2/15/01/24/0bb164803a9f6b4ea6939ad12b6de44d.jpg

And back to subject I'm more intrested in hardware and me personaly getting the parts at my price level, junker, ebay, salvage yard, friend or any way, 200 for hardware for the swap is sell friendly


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[ilikerice]

Whoa whoa... I am just now reading this.. You mean to tell me that I can go to a parts store, ask for reman calipers, pads and rotors off a xD and they will bolt right up, no clearance issues? Maybe just go ahead an get some Hawk pads also...

What year corolla are the better to use?

[RagnaCaT]

Easy easy!!! As Enviri said Yaris SE discs all the rest are 5 lugs... Corolla 09+ up is what you need, mine are 2011 and for clearance you can still run 15"


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[nortonfb]

09 corolla rotors and calipers will just bolt up?
Does the master cylinder require a change?
I have an 07 with 15" wheels, this tempts me.
Is there a parts number list to do this conversion?
Thanks for sharing. Sounds like a good spring time project.
Norton

[enviri]

calipers just bolt up. YOU HAVE TO GET YARIS SE FRONT ROTORS. master cyl no need to change. the piston driving the pads are marginally larger than stock.

http://www.yarisworld.com/forums/showthread.php?t=36955&highlight=project+bbk


**as of 2011**

Scion XD Calipers USED: ~100$ off ebay; ~165$ on rock auto (semi-loaded caliper) (toyo part# 47730‑12A10|47731‑12A10)
2012 Yaris SE rotors (toyota part# 43512-52130): ~105$ ea (msrp)
Napa Adaptive ONE pads w/ shims for Scion XD: 57$ (cheaper than buying shims and pad seperately, plus these pads are very HQ)

we're going to re-use the clips off the yaris' caliper. They are the same part #.

[enviri]

btw the rear calipers, according to my PR ppl in various toyo dealers around here (lol) corolla XRS 09ish rear calipers should be the same, as the pads are the same too. get the ebrake lines from that car too if you can, or find another toyota with caliper ebrake..you now need to make a bracket+rear hub spacer for calipers, then seperate teh hub from the drum assembly and you finished your rear disc setup, ragnacat. :)

[nortonfb]

Thanks for the information.
Maybe in the spring..
7* F currently.
Norton

[CrankyOldMan]

I'm having a hard time understanding how the OEM parts go together. The parts diagrams from Village Toyota include the SE, but they don't show a full assembly of the caliper and mounting bracket. The beams are very different, as well. Is there another part on a different diagram that I'm missing?

[enviri]

Those beams shown in that epc arent RS/SE beams...i checkd myself and it doesnt show the actual look.

i took pics when i got mine in comparison..

http://i50.photobucket.com/albums/f332/xienji/Rear%20disc%20conversion/B2B26F2F-199F-40C0-9A07-D05D201EB2C1-1871-0000017441D8797A.jpg

vs drum:

http://i50.photobucket.com/albums/f332/xienji/Rear%20disc%20conversion/9B703855-BBA5-423E-96C3-BC2B8A5494B5-1871-000001743C78C613.jpg

[CrankyOldMan]

Aah, that makes much more sense! Was yours a JDM import?

[RagnaCaT]

Just need custom brackets now and hardware for the ebrake
http://tapatalk.imageshack.com/v2/15/01/26/f9182e58d221e225b069fc7d8bb664b9.jpghttp://tapatalk.imageshack.com/v2/15/01/26/7bf6626b714971a05ca57165c772122c.jpghttp://tapatalk.imageshack.com/v2/15/01/26/ebb9cdec1ccf972ae7cd326237a03c78.jpg


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[enviri]

good man! finally my idea is taking shape after yrs :) can you show the mount of the caliper to hub? can you get the ebrake cable from the car too? it really isnt hard to harvest it. it might be longer, but im sure you can cut it to size.

Aah, that makes much more sense! Was yours a JDM import?

yes.

edit: i found the part numbers for the Ebrake lines.

vitz RS NCP91- 46420-52161 and 46430-52161

vitz RS/Yaris SE NCP131- 46420-52370 & 46430-52360

XB2 part numbers: 46420-12730 & 46430-12620...seems the lines are pretty damn affordable.

[puetato89]

Maybe I'm just lost within scripture, and maybe this is completely out there, but essentially, couldn't you just get the SE model RDB and hook it up to any yaris? Are they not direct bolt on?

[RagnaCaT]

http://tapatalk.imageshack.com/v2/15/02/07/e1bda7a0073dac04ca206e5ec71b7975.jpghttp://tapatalk.imageshack.com/v2/15/02/07/83c558a839f95f1c9c738b1659bdffec.jpg

Front Swap Done


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[enviri]

Maybe I'm just lost within scripture, and maybe this is completely out there, but essentially, couldn't you just get the SE model RDB and hook it up to any yaris? Are they not direct bolt on?

no, its not direct. you need brackets for the caliper. that's it.

[puetato89]

Well that sounds easily achieved, thanks.

[RagnaCaT]

Enviri can these E-brake cables be sourced in the states?
vitz RS NCP91- 46420-52161 and 46430-52161

[enviri]

no...you can try the ncp131 versions..its a few inches longer though.

[enviri]

update: the corolla XRS pads do indeed work with jdm rear discs. fyi.
reasoning suggest calipers are identical.
http://i50.photobucket.com/albums/f332/xienji/Rear%20disc%20conversion/IMG_20150312_183013nopm.jpg

http://i50.photobucket.com/albums/f332/xienji/Rear%20disc%20conversion/DSC_0118.jpg

[RagnaCaT]

Did you ever change the proportional valve?


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[enviri]

no