3rd gen 2zr swap with 6 speed

[stidnam]

After exchanging private messages with a few members over the past few months and now finally acquiring a donor vehicle for the conversion, I think it's time to share some details about what I'm planning and what I've learnt so far.

This conversion will be slightly different to the other conversions done to date, and I suspect the first one done in Australia. Therefore, hoping the details here open up some options for those looking to do the conversion in the future.

I'm no stranger to engine conversions, but this will be the newest car I've done an engine swap on. I've never had to deal with immobilisers, can buses, etc. Cars of the 90's are much more simple to work on.

The recipient vehicle
Back a few months ago I sold my Toyota Starlet on a whim and within the same day picked up a 2012 Yaris ZR - similar external styling to the American SE model, but 2 doors and comes with few extra creature comforts. Kind of funny it was given the ZR designation from factory. I'll be ensuring it lives up to that original designation ;)

I've already sorted out suspension, sway bar, and a few other bits and pieces. Overall I'm happy with it as a replacement for the Starlet, but the seating position is horrible! On the flip side, visibility is great, which probably suits the target market - teenage girls and the elderly.

https://i.ibb.co/X25Nm9k/Yaris.jpg


The donor vehicle
In Australia the 2zr first appeared in our 2007 ZRE152 Corolla. It was matched with a C66 gearbox until 2009 when the car got a facelift and the gearbox was replaced with an EC60, which is the same gearbox the Scion IM uses. The EC60 has a shorter casing than the older C6X boxes and also as an internal slave unit as opposed to the external slave of the C6X.

The Aus delivered EC60 transmission has ratios of: first, 3.538; second, 1.913; third, 1.310; fourth, 0.971; fifth, 0.818; sixth, 0.700; and reverse, 3.333. It is matched to a 4.562:1 final-drive ratio.

The facelifted ZRE152 appears to be the perfect donor for the conversion for a number of reasons - 1. The engine ECU is still plug and play with the 2012 Australian Yaris body loom, and; 2. The EC60 should fit into the Yaris chassis without modification to the frame rails. In theory, this provides a 2ZR 6 speed package that can be dropped in.

Soooooo.....I went out and purchased an entire wrecked one owner 2012 ZRE152 Corolla with 25k miles on the clock. Here in Australia if a car has been declared a statutory write off, it can never be registered again, and more common older models go for dirt cheap. This then provides one with the luxury of having everything running before hand and all ancillaries that match the motor.

The goal now: try and recoup the purchase price of the entire car by selling off all the remaining parts, thus ending up with a free motor and gearbox. Not holding my breath, but I've made back 10% of the total cost so far :)

https://i.ibb.co/T8m013m/rightside.jpg


The conversion
I haven't actually started to strip the motor from my donor car. That won't happen till some time in February. In the meantime, the focus remains on trying to recoup the initial outlay and sorting out the remaining unknowns involved with putting this combo in a Yaris. I've chunked down the conversion into a few categories - some which are resolved and some not so much.

Engine mounts
In 2008 Toyota released a 2ZR 6 speed Yaris in Europe, South Africa, and New Zealand. That particular model came with an EC67 gearbox. Interestingly, when they came to build the new 2017 GRMN Yaris, they dug into their parts bin and used the exact same mounts and bolted an EC62 into it. Therefore, my assumption has been that the same mounts will work to bolt the entire Corolla setup into the 3rd gen Yaris chassis. I've obtained all the mounts required as well as some additional mounts if I need to revert to using the C54 in the Yaris. For reference sake, the part numbers to bolt the 2ZR + EC6X box in are

Engine side bracket - 12315-37040
Engine side isolator - 12305-37190
Dogbone bracket - 12313-37010
Dogbone isolator - 12363-37010
Gearbox mount bracket - 12325-37100
Gearbox mount isolator - 12372-37141

Some of these mounts are common with the XD, but the gearbox side mount is unique to the EC6X Yaris setup. Those mounts had to be obtained from New Zealand.

Shifter cables
This part is going to be a little tricky. The C50 shifter cables are different lengths and the shifter setup sits more towards the front of the gearbox, whereas the EC6X shifter cables are closer in length to each other and the selector setup sits more towards the back of the gearbox. Toyota wanted $500 US for the GRMN shifter cables. I'm not ready to drop that kind of money on two little cables, but it's nice to know they are available if all else fails.

For the moment, I've obtained a set of Scion IM shifter cables in hopes they are the right length. All failing that, I have the option of buying some shifter cables from the UK (They put an EC6X in a fair few of their 3rd gen models, but there's no garentee they are long enough to suit the 2ZR position in the bay). I also have the ZRE152 cables as well, but I'm assuming they are all but useless given the shifter setup in that car.

So a bit of work to do here and a crucial piece of the puzzle to solve if I'm going to get this to work.

Drive shafts
The Euro 2ZR Yaris with EC6X gearbox uses the exact same drive shafts as the 2ZR yaris with the C50, and the same part numbers are also shared with the Scion XD and Toyota IST. Therefore, my assumption is that these shafts will at least be the right length and slide into the EC60 as well as into the Yaris hubs. I just need to import a pair from somewhere :(

The other option I have is the Corolla ZZE122 here in Australia. Investigations have revealed the drive shafts to be extremely close to the length to what I need, but further investigation is needed to confirm they'll actually fit and if I'll be able to retain the factory ABS.

On the topic of ABS, I was initially concerned about losing ABS if sourcing shafts from another model as I didn't understand how the ABS sensor worked. Tom has been kind enough to clarify for me that the ABS is picking up off the wheel bearing as opposed to a ring gear on the shaft. It would seem that both the Scion XD and 3rd gen Yaris utilise the same method of sourcing the ABS signal this way so I *think* I'm ok on this front.

ECU and Immobiliser
The ZRE152 Corolla and the Yaris share very similar wiring and immobiliser setups. I was originally looking at swapping out the immobiliser ECU as well and getting custom keys made up to match the car as well as the immobilser, but after seeing Adam's approach of registering the new 2ZR ECU to the immobiliser ecu, I'm going to cross my fingers and give that a punt when it comes time. There's a couple of options to fall back on, but I'd rather not think about that at the moment.

Radiator Fan
This is the only other difference I'm expecting I'll have to resolve when comparing against the other 2ZR swaps. The ZRE152 ECU triggers a separate radiator fan computer that varies the fan speed. I'm anticipating I'll have to utilise the same setup in the Yaris and wire the Yaris fan into the Corolla fan ECU. I'm not anticipating it to be a big deal, but something to note for anyone else considering the same swap.


Everything else with the swap seems pretty straight forward as per everyone else's 2ZR swap. While I hope to get everything pulled out and inspected in the next month or so, I don't expect to start the swap till later in the year. I feel a little nervous ripping apart a perfectly functioning vehicle just because I want another 25% more power and torque :) I also won't do the swap until I literally have everything ready and I'm confident I can have a functioning swap in one weekend. In the meantime I'll provide some updates on compatibility of drive shafts etc and anything else I find while investigating the rest of the unknowns.

[myfirstyota]

Blazin trails. Love it.

Wtf... The NA market never gets the good lookin rides

[atomic_hoji]

...
I feel a little nervous ripping apart a perfectly functioning vehicle just because I want another 25% more power and torque :)
...

Awesome to see your build thread started! :thumbsup:

It takes equal parts bravery, determination, and blatant disregard for common sense to tear apart a perfectly good, running, and relatively new vehicle.. Don't know what kind of dummy would do that.. :biggrin: (there's a few of us! hah)

With the number of people who've swapped the 2ZR on YW now I think you've got a good support group to make it work. Can't wait to see how you make out with the transmission mounting and axles - I'd love to pop a 6-speed in, but the C6x being longer meant frame cutting. The GRMN using the EC6x brought hope, and now you're stepping up to prove it! :thumbup:

Anxiously awaiting project day..
-- Adam

[Maritime]

Signing up to watch.

[tmontague]

Good stuff, looking forward to following this build. I agree with the above post, that is a nice looking front end on your Yaris, too bad we dont have that option in NA

[CrankyOldMan]

WANT! I've been theorycrafting an EC6x gearbox swap for a long time, this will be awesome to see it come to life!

[atomic_hoji]

The 2012-2014 Yaris (hatchback) SE bodywork is very similar, if not exactly the same, but with in a 5-door version. No idea what perks the ZR has on the interior or gadget front; curious now though.. hah.

Given the whale-mouth on the 2015+ - now complimented by the snub-nose on 2018+ - I'd thought about buying the earlier bumper as CAPA certified ones aren't terribly expensive. Unfortunately, paint to colour-match is fairly expensive.. and I've grown to like the snub-nosed, whale face of the 2018, lol. Also, money spent on bodywork is money not available for awesome stuff like a 6-speed swap. :biggrin:

-- Adam

[thebarber]

Subscribed

[stidnam]

Adam, I don't think there's too much difference in the interior either, but we get automatic climate control, telescopic steering, auto headlights, and the run of the mill Fujitsu-ten touch screen GPS unit (it's not that great). Seats and the rest of the interior looks the same

What you need for your third gen though is this badge for the hatch ;). Excuse how dirty it is.

https://i.ibb.co/MnQ6QRx/badge.jpg

Cranky, any other insights from your theorycrafting? All the parts cross checking I've done says it's possible. It's just the shifter cables being the big unknown.

Happy to forward the details of where I got the gearbox mount from in NZ if anyone else wants to give it a punt while I'm mucking around taking my time ;)

I will take detailed pictures of the gearbox when I pull it out to show mount points etc. I'll be testing that all the brackets I've purchased fit said mount points as well. Can also take measurements and confirm axle spline count etc etc.

[06YarisRS]

Subscribed

+1

[stidnam]

I forgot to mention the shifter cage needed for the 6 speed. I've worked that out though. The bolt pattern to mount the cage to the floor is the same across both 2nd and 3rd gen Yaris as well as the Scion IM and a lot of other models I suspect.

I've purchased a Scion IM (Corolla ZRE182) shifter cage with the reverse gear pull ring. Will now need to find an appropriate shift boot that matches my interior and centre console. Looking at the Euro Yaris 6 speed models to see if I can get something that's a direct fit. Will need something with red stitching to match.

[ern-diz]

Sub'd!

[CrankyOldMan]

Cranky, any other insights from your theorycrafting? All the parts cross checking I've done says it's possible. It's just the shifter cables being the big unknown.

The EC6x uses a hydraulic cylinder for the throw out bearing, not the arm-and-slave-cylinder that the C-series uses. You could probably fab custom lines, but I'm an OEM parts kind of guy for this stuff. Gonna have to think some more about what other differences there are.

[stidnam]

Yeah the clutch lines have been on my radar as well. The EC60 hard lines come around on the left hand side and the chassis rail on the Corolla. I haven't looked at the Yaris, but I'll get some comparison pictures when I pull the EC60 gearbox out.

In the meantime I've checked the parts manual and the diagrams look very similar in respect to the hard lines coming from the master cyl on a RHD car. I wouldn't be surprised if it all just bolted/screwed up. Maybe a new custom soft line...maybe

GRMN Yaris
https://i.ibb.co/3cxBN2P/GRMNclutch.png

2012 Gen3 Yaris
https://i.ibb.co/g39ZcTM/Yarisclutch.png

Edit: equiv images for LHD models

GRMN Yaris
https://i.ibb.co/q1tPVTQ/GRMNLHD.png

2012 Yaris
https://i.ibb.co/JpPpL2C/YarisLHD.png

[Bugeye]

Good luck with the build buddy. I will be watching this closely

[stidnam]

Good luck with the build buddy. I will be watching this closely

Why not come join in the fun instead ;) 2zr's are cheap as chips in Straya.

[myfirstyota]

Why not come join in fun instead ;) 2zr's are cheap as chips in Straya.

That like "Murica"? Lol

Cause we got "tronno" here

[stidnam]

That like "Murica"? Lol

Cause we got "tronno" here

Exactly :)

A few more parts arrived today. I received most of the rubber coolant hoses, except for one of the main radiator hoses - not sure how that got missed.

Short hose from heater core - 87245-52151
Long hose from heater core - 87245-52141
Clamps for heater core hoses - 96136-42501
Short hose to radiator - 16573-37030
Filler neck - 16502-37010
Long hose off filler neck - 16571-37090
Clamps for large coolant hoses - 90467-33006
Bottom radiator hose - 16572-37080
Engine stay - 12317-37010

Decided to buy new clamps all round just in case, and decided to purchase the engine stay for the RH engine mount. A few people have dismissed the need for this as they can't see a reason for it. Toyota wouldn't have added it though if they didn't have a reason (triangulation of engine mounting for additional strength maybe?), and in keeping this as factory as possible, why not add it back for the $15 it's worth.

There's a couple of things I'm still missing though, and not sure what I can use off the Corolla/Yaris vs what I need to buy new. Maybe Adam can comment.

- Intake to air cleaner pipe
- Engine ventilation hoses coming off intake and cam cover
- Fuel vapor hoses
- Brake booster vacuum hose

Planning to do a comparison between the Corolla and Yaris for all those parts when I pull the motor out early Feb anyway.

Also understand that a lot of the above part numbers etc have been documented in many of the 2ZR threads, but just recovering here for the benefit of anyone looking at this thing from start to finish.

[Bugeye]

Why not come join in the fun instead ;) 2zr's are cheap as chips in Straya.

Yeah I been doing my research. I have an 07 but wasn’t keen on chasing the XD parts.
But am contemplating getting a 2012 and going the same route as you.

[stidnam]

Shouldn't make a difference if it's 2007 or 2012. You'll have to chase the exact same parts.

The parts we don't have readily available to us are
- Axles
- Shifter cables (For C50/C54 in the slight forward and left mounted 2ZR setup)
- Airbox

You should be able to procure those through US Ebay sellers if keen enough.

The Toyota IST and the NZ market is always another source of parts. The 3rd Generation Toyota IST is the same car as the Scion XD. It just never came out as a manual in Japan, but the driveshafts in the 2zr version are the same as the manual Scion XD, and in theory the airbox should fit as well. Just be aware that the IST came out with a 1nz as well and you aren't going to want the parts from that variant.

[Bugeye]

Ok cool.
Might start pricing parts up.
I really wanted to keep the corolla box over the Yaris 5 speed due to my daily m7 run.

Still in the back of my mind I’m concerned with keys/immobilizes also,
5 stud and disc brake rear would be awesome also

[stidnam]

Yeah fair enough. Being up front about costs, you're looking at the best part of $1000 for all the required brackets and isolators. Or you can go down the route that others have and only swap the engine side bracket over and keep your C54 (assuming the AU version bolts up).

The immobilser concerns me as well, but I take some solace in what Adam did to register his ECU to the immobiliser ECU. There's clear instructions on how to do it, and it sounds fairly logical.

Disc brake rear end is never happening I'm sorry unless you import the rear end from Japan at an unearthly cost :( We never got any Yaris or equiv chassis with a disc brake rear end I'm afraid.

[myfirstyota]

Not sure about your market. But 2 months ago I found a 2012 Yaris se with rear disks in the u-pull yard. Don't ask me why it was there. 2012 was about 6 years newer than any other car there. $50 got me an axle that essentially had to be stripped and rebuilt (wheel bearings, calipers and brackets, ebrake cables) even though I have to replace all that, I'm still looking at a rear disk conversion for $700cad with all new parts. Not bad...

I think its just one of those things.... Some will have avenues of making it happen... Some won't.

[NYC-SE]

Disc brake rear end is never happening I'm sorry unless you import the rear end from Japan at an unearthly cost :( We never got any Yaris or equiv chassis with a disc brake rear end I'm afraid.

So you're telling me that your Yaris ZR, which looks exactly like our Yaris SE, has drum brakes? Interesting as our SE has discs.

[stidnam]

So you're telling me that your Yaris ZR, which looks exactly like our Yaris SE, has drum brakes? Interesting as our SE has discs.

Yup! The bean counters here in Aus Toyota must have decided it wasn't worth it :(. The ZR has been the top of the line model since the first Gen 3 came out, and it's never had a disc brake rear end.

[stidnam]

Airbox has been purchased and is coming from a Toyota IST in Japan. Lucky enough to have all the pipe work and even an airflow meter (getting swapped out anyway).

https://i.ibb.co/ynsPnzn/Airbox.png

Pretty much just the drive shafts left now to source, and a few odds and ends from Toyota.

[stidnam]

Well after a full days work on Friday, the donor Corolla is now stripped and engine is out. The engine pull was rather easy - no engine lifter needed. Just jacked the car up, then lowered the front back down just enough to rest the engine on a dolly, unbolted the mounts and wheeled it out :).

I've had a better look at the EC60 gearbox. The casing is a lot shorter than that of the C60, and based on what I can see, all the Yaris mounts I've purchased should bolt up. I actually need to check if the factory ZRE152 corolla side mount already fits. Doubt it, but I'll do a side by side comparison.

https://i.ibb.co/gD553sK/EC60gearbox.jpg

I'd love to be able to run that front mount as well on the Yaris. Ashame there's no provision for it.

I also checked the spline count on the drive shaft. I can confirm that it has 20 splines, further adding to my confidence that XD shafts will work with this gearbox. I'm now going to take a punt and just buy a set out of the US.

I don't expect anyone to believe that all of this will bolt straight in and clear everything until it's done. Regarding that point, I'm now contemplating the purchase of a written off Yaris to strip as well as test fit everything and get the exhaust and wiring all sorted for a full plug and play experience.

[CrankyOldMan]

Looks like the clutch lines fit as well? Or is that still in the donor?

[stidnam]

Nah that's still in the donor before I dropped it out

[stidnam]

Small update and just a confirmation of previous assumptions

I can confirm the lower gearbox bracket for the Scion XD bolts to the bottom of the EC60 gearbox and all mounting holes are threaded on my EC60.

The GRMN side gearbox bracket also bolts to the EC60. This bracket is significantly different to the one for the ZRE152 chassis, as expected. Unfortunately though, it would seem that this bracket comes with small tab on the side that looks like it's used to clip a wiring loom on, and this fouls with the counter weight (?) on the shifter assembly. Guess I'll either bend it or chop it off all together pending actual installation. There's already a bracket on the gearbox to support the wiring loom that goes to the speed sensor.

https://i.ibb.co/q19Z2Sq/sidemount.jpg

https://i.ibb.co/dQ5w6qN/topmount.jpg

Just needs LSD now ;)

[stidnam]

Just a quick update on a couple of things.

Driveshafts

I ordered left and right Scion XD drive shafts from the US, which turned up today. Unfortunately the wrecker either didn't inspect them correctly or didn't pack them well enough as the front right has a nice slit in the boot and was oozing CV grease all through the package.

As a side note, I really feel sorry for those of you who have to deal with snowy conditions and salt roads. These drive shafts looked as if someone had given them a bath in the ocean. Doesn't really surprise me given how much rot I see under cars subjected to salt roads :(

Anyway, I took the right hand shaft down to the drive shaft shop and we went hunting through what they had in stock that matched the same specs as the XD shaft. I had already done some research and had a pretty good idea. We ended up confirming that a ZZE122 2006 model Corolla was a perfect match (spline counts, shaft length, seal surface etc all seem to match). Based on my research, the left hand shaft is a match as well in length. It would have been nice to know this from the start, but hopefully it's good news for anyone doing the conversion here in Aus and wanting local options for drive shafts.

Shifter cables.

Overall good news on this front as well, but I fear I may have wasted some money in the meantime trying to work out my options. I ordered some shifter cables from a UK Yaris running a 1nr and EC60 combo. Total punt in hopes they fit. I received them the other week and have taken measurements against the Scion IM/Corolla cables I have. The bad news is I don't think they'll fit. I believe the 1nr/EC60 combo from the UK Yaris sits about 20 - 30mm closer to the firewall than what the 2zr/EC60 combo does. Unfortunately, the Scion IM/Corolla shift cables are around 70mm longer than the 1nr/EC60 combo and it's likely they'll just be excessively long.

To top it all off, the 1nr/EC60 cables don't latch into the shifter cage in the same way the Scion/Corolla cables do. If the 1nr/EC60 cables end up fitting, they'll most likely require me to buy the Euro spec shifter cage as well to properly secure them.

The good news is I found a company here in Sydney Australia who are able to make me up brand new shifter cables for around 200 AUD. That should enable me to supply them with the plate that seals the cables to the floor, and I should end up with cables that fit perfectly.

Hope this helps out someone in the future :)

Not long until there's no reason not to start pulling everything apart!

[atomic_hoji]

Was just thinking about this recently!

Good to hear you're making headway. Ya, the salt use on the roads here makes wrenching more ... awesome? :rolleyes: Too bad about the buggered CV boot, but glad you got it sorted; and found an alternate source for the one side!

That's good news you are able to get shift cables made-up if need be, but too bad about that the other stock cables haven't worked out - unfortunate side effect of researching solutions. Have you had a change to measure how the stock Yaris cables compare? I guess until you pull it apart you won't be able to measure for sure.. lol We know they mate to the shift cage correctly since they're stock, but just wondering if the transmission end is compatible and how the length is comparatively; or you've already said and my brain is melted.. lol

Looking forward to seeing how you make out as you get everything installed.

-- Adam

[stidnam]

The ebay seller was really good about the shaft and refunded me the cost of that shaft. The refund will cover a reconditioned zze122 shaft, so no loss. Might even get the boot replaced on this shaft and keep it as a spare. Kind of erks me putting in shafts that look all rusty even though no one ever sees them.

I can say with good certainty that the factory 1nz/C50 shifter cables will be totally useless. The shifter setup on the C series gearboxes is completely different. I'm fairly confident I'll need custom at this point. The only other car that might have any remote chance of donating its shifter cables is a manual C-HR. Too much effort to try and find one being wrecked to even check.

Adam, as you point out, all this is just the cost of research right. I'm hoping it helps someone else out at the end of the day.

So literally the only things left to acquire are a new clutch and a quaife diff ;)

[CrankyOldMan]

I feel your pain on the research costs. I bought 4 different C5x gearboxes when I was figuring out gear ratio swaps and which LSD goes in. I somehow bought the wrong LSD and had to pay a 25% restock fee. Ouch!

Really excited to see things moving along on this!

[stidnam]

*edit*

May have just jumped the gun here a little. I've been mapping the wiring for the conversion this weekend and thought I'd come across a problem with a difference in speed sensors, but does anyone know whether the speedometer signal on a gen 3 is fed off the wheel sensors as opposed to a gearbox sensor? I'm assuming it is.

I jumped to conclusions when I looked at the non-abs wiring diagrams and saw the speed sensor in the actual gearbox. Had me worried for a second there.

[saikouguy]

Awesome stuff. Judging from the photos you're based somewhere in Sydney/NSW. Can't wait to see the first 2ZR swapped Yaris/Echo in Australia.

[stidnam]

Yeah Sydney based. Never know, someone might beat me to it with the slow progress I'm making :)

[saikouguy]

Should jump on our Facebook groups and show your ride we're looking to do a meetup soon in Sydney.

'Vitz Club Australia' & 'Sydney Yaris / Vitz club'

[Bugeye]

How is this going ??

[stidnam]

Progress has been slow. I've been preoccupied with other things.

I've purchased a new clutch kit and I've also purchased a Quaife ATB/LSD, but haven't had it installed yet.

I've finishing the mapping for all the wiring on paper and can throw that up if anyone is interested.

Next step is for me to purchase another Yaris at the salvage auctions so I can transplant everything in that shell and prove it'll all work before I rip a perfectly functional car apart :)

I'm also still exploring options for shifter cables. I'd like genuine ones, but having trouble getting a hold of any at a decent price. I still have the fallback option to get custom cables made up and will probably go that way.

[CrankyOldMan]

Awesome! I'd be happy to look over the wiring diagrams if you want a second set of eyes on them.

Someone was asking in another thread about an LSD for the EC6X gearboxes. What model did you get?

[stidnam]

Thanks Cranky. I'll take you up on that offer. Will upload as soon as I find an appropriate format - currently in spreadsheet form at the moment. Have mapped the pin changes for the body side of the ecu loom as well as the fuse box connector. Everything looked fairly straight forward with some joining of common power and the addition of the corolla fan controller.

I've purchased a QDF29E. I have found someone here in Aus who has installed that centre in the exact same gearbox, so fairly confident in it fitting. I'd responded to that other thread as well and I'd put money on the centre fitting any ec6x box, but the cost of the centre warrants doing a little more research on that guys part.

[stidnam]

Here's the ECU body side mapping between the Yaris and the Corolla. The pins on the Yaris loom will need to be de-pinned and re-pinned to match the Corolla plug. I'll also have to add a new wire for the fan controller and run another circuit for that, potentially.

https://i.imgur.com/XvAiIYU.png

Here's the fuse box plugs for the corolla - two of them. The BA1 mapping column is the Yaris BA1 pin reference.

https://i.imgur.com/3OUV263.png

And here's the Yaris BA1 pinout that matches the Yaris BA1 reference in the previous image.

https://i.imgur.com/NoPEJMu.png

Ignore the colours on the last two images. They were just my way of checking off what I'd already matched.

Disclaimer - for anyone thinking about using the above, please do the mapping for yourself. I haven't proven this mapping to be correct. Also this mapping is specific to a 2012/13 Australian spec Yaris and 2012 Australian spec Corolla. Also I understand my labeling of source and destination will technically not be correct if you consider the power source to be the true source. Don't over analyse it ;)

[CrankyOldMan]

That's definitely the right way to do this. The good news is that the fuse box connectors are simple enough to swap using a very small needle/pin and a watchmaker screwdriver. The ECU smaller pins are much harder to remove without damaging them.

I found a video that has a neat trick for being able to take them out without the crazy tiny tool that would otherwise be required: https://www.youtube.com/watch?v=9uW-QeclHmU

[stidnam]

Sweet! Thanks for that. I had been wondering how to de-pin that connector. I'd picked up the body harness from the Corolla to play with, saw the locking tabs, and then decided it was all too hard in the moment and then put it away for another day. Pretty straight forward once you get that pin cover off though!

[stidnam]

I tested fitted some 17" MX5 ND wheels today (fronts). Unfortunately the 215/45 R888s scrub the inner front guards pretty bad :(. The size, surprisingly, actually suits the car well in my opinion. Might investigate some 205/45 rubber. Has anyone run 205/45R17 with a +45 offset without scrubbing inner guards?

https://i.imgur.com/IDg5waj.jpg

On a completely different topic, I'm also keen to get some feedback from those who have done the 2zr conversion - given the Engine ECU dictates the throttle curve, did you notice better throttle response when switching from the 1nz to 2zr? Rev matching on the downshift is so frustrating with how the factory throttle curve is programmed. The first 15% of the throttle does nothing, and the rest of the throttle feels like stepping on a wet sponge.

[myfirstyota]

I noticed better throttle response but i also installed a lightened flywheel so my opinion probably doesn't mean much.

Im also using the Xd trans with different gearing..

[06YarisRS]

I don't know that I can weigh in on the throttle response thing either with the Scion xD ECU and turbo. But, before I modified the 2ZR, it seemed more responsive than the 1NZ.

[3rdSEman]

205/45R17 Pilot Sport A/S 3+ on RPF1 17X7 ET43 & stock 2012 SE suspension clears nicely all around no rub

[stidnam]

Champion! Thank you! Close enough to make me start seriously looking for tyre options.

Thanks guys for the feedback on the throttle. I'd been speculating that Toyota put a pretty big curve in the Yaris throttle given the target market and type of car it is. I still need to investigate pedal options as well. The height and spacing of this pedal in relation to the brake is horrid.

[CrankyOldMan]

The height and spacing of this pedal in relation to the brake is horrid.

Agreed. They definitely were not looking at making it easy to heel-toe on this setup.

[stidnam]

I happened to be in Tokyo this week and stopped in at one of the Autobacs. To my surprise I found they stock Neoplot pedals. It was a little on the expensive side, but thought I'd give it a punt. The position looks better than stock - 20-30mm higher off the floor and a touch to the left.

I'll install it in the coming weeks and provide some feedback as to whether it was worth it.

https://i.imgur.com/vS7yXa3.jpg

https://i.imgur.com/hojhz4p.jpg

[Bugeye]

Cool mate. Thanks for the update.
I’m still going to attempt mine eventually, but scared of wiring. Might go haltech (mmmaaaaayyybbbe)

[stidnam]

Just a small update. The latest MCM video provided a little motivation and I thought it was about time I made some progress. So I went and bought another Yaris..

https://i.ibb.co/rHZNpwp/YRX.jpg

The plan is to strip the motor and gearbox out of this one so I can test fit the 2zr and EC60 into this chassis, wire it all up, sort the shifter cables and exhaust, and then transplant it all into the other Yaris.

Soo...anyone in Sydney want to buy a 1NZ motor? :)

[ern-diz]

Nice!

[06YarisRS]

I happened to be in Tokyo this week and stopped in at one of the Autobacs. To my surprise I found they stock Neoplot pedals. It was a little on the expensive side, but thought I'd give it a punt. The position looks better than stock - 20-30mm higher off the floor and a touch to the left.

I'll install it in the coming weeks and provide some feedback as to whether it was worth it.

https://i.imgur.com/vS7yXa3.jpg

https://i.imgur.com/hojhz4p.jpg

Oooh. Lovely looking piece of hardware there! I bet that would feel fantastic underfoot.

[stidnam]

Yeah it's a lovely looking piece of work :)

Unfortunately I haven't installed it yet. I'll be ripping the accelerator pedal out of this new Yaris and swapping it onto that pedal before installing it in my car. After driving a manual corolla over the Christmas break, it's really highlighted how bad the pedal positions are in the Yaris. I may even take the blow torch to stalk of the pedal to try and move the position a further 10 - 20mm closer to the brake pedal.

[mitch9521]

Following this thread closely, as far as I know you are the only one tackling a 2ZR-FE on a 3rd gen. So far it doesn't seem much different than doing the swap on a 2nd gen Yaris/Vitz

[stidnam]

More progress today. Motor and gearbox have been test fitted to my spare shell and I've wired up 99% of the fuse box connector. What I can confirm so far


Motor and box mount perfectly using the GRMN Yaris mounts
The GRMN gearbox mount has a wiring harness tab on it that fouls on the counter weight of the gearbox selector. This needs to be bent out of the way
The cables I obtained from the euro 6 speed yaris do fit, but really aren't long enough. Shifter cables will need to be custom made
The Yaris battery tray no longer mounts properly on top of the gearbox mount. Mounting holes will need to be slotted
Exhaust looks like it lines up nicely, so I'll be grafting the Corolla exhaust to the Yaris one


Now on to the wiring


Factory Corolla starter wire does not reach the positive terminal where the Yaris battery fits. This will need to either be re-routed or extended
99% of the wires in the Corolla fuse box plugs terminated nicely into a brand new Yaris 26 fuse box plug. The only exceptions are the starter trigger, which is too big, and the wiring for the ignition coils and fuel injectors - these are two separate wires in the corolla loom that share a common terminal in the Yaris. It's a tough squeeze to get both wires in the Yaris plug. If running bigger injectors in the future, I'd actually run a separate circuit off this wire, using it as a trigger.
Remember not to remove the secondary lock tab completely from the Yaris fuse box connector as the first row of pins are actually inserted through the secondary locking tab :redface:
There looks to be a single redundant brown wire in the corolla loom. I couldn't find this in the wiring diagrams. After running a few checks I confirmed it to be a ground wire
There's a second fuse box plug in the Yaris. This plug seems solely dedicated to the heated oxygen sensor where the wiring goes back into the cabin and back out the floor to the exhaust. The Corolla does things differently and this wiring is all part of the engine loom. Therefore, it looks like this plug will be left empty per the photo below.
After plugging in the ECU and connecting up the computer, the software now recognises the 2ZRFE ECU even without connecting to the car. Running the diagnostic over it though and it's coming up with errors against MAF, Air temp, and immobiliser. Nothing too surprising as MAF wasn't plugged in, neither was the Oxy sensor in the exhaust, and the immobiliser is a given until the ECU is registered.


That's it for now. Next steps will include getting shifter cables made up, grafting the Corolla exhaust to the Yaris one, and finishing off the wiring odds and ends.

https://i.ibb.co/Kmfd3Db/2zrfitted.jpg

https://i.ibb.co/vLx828v/fusebox.jpg

[CrankyOldMan]

Awesome work!!

[saikouguy]

Exciting stuff can't wait to see it. Maybe in person would be great :wink:

[stidnam]

Exciting stuff can't wait to see it. Maybe in person would be great :wink:

Still a little way off dropping the motor into my daily.

While installing the motor on the weekend I also noticed the 2zr water pump had been leaking. Seems to be a common problem so will be replacing that while I'm at it. I'm also thinking about putting the spin on oil filter adapter while I'm at it.

And...after investigating custom shifter cables, I'm now investigating options to buy the genuine Toyota cables. Could be a long wait.

Oh, and I'll have to re-upload new images of the wire mapping. There are some errors in my previously posted images.

[stidnam]

Small but exciting update. I've managed to get my hands on genuine GRMN shifter cables that match my gearbox. Buying genuine ended up costing the same as what custom cables would have.

Note, these cables are made in Belgium. No surprise there given where the GRMN Yaris is assembled (France).

The cables are around 30mm longer than the ones I'd purchased from the UK that were from the 6 speed diesel Yaris. Not surprised either given the 2zr is mounted forward and down.

In other news, the ZRE152 computer appears to be incompatible with the 3rd Gen systems. More to come on that, but doesn't look like I'll be using the original engine I bought.

https://i.ibb.co/zSf5bFT/cables.jpg

[spoonzz]

Any updates with this? So keen to see your progress. I'm also in Aus and own an auto 2012 Yaris YR and wanting to do something similar one day. Good luck!

[ikenty]

You are an inspiration to me.
I am on my second vitz now. I had a NCP13 Vitz RS now I have NCP91 Vitz RS.
My plans were to swap a 2zr engine and use my extra 6 speed transmission from my AE111 Levin for better acceleration but then I realized that the 2zr transmission bolts up to the 1NZ engine so now I am trying to confirm if the mounting points for the C50/56 NZ/ZR is the same as the C66/EC6x boxes.

Thanks.
Kimo

[stidnam]

Glad I'm inspiring someone :)

You'll likely find that the chassis mounting points for the C5X and C6X boxes will be pretty similar or at least have bosses in the right spot to tap. Would pay to do your research though.

The EC6X boxes will unlikely bolt in to the NCP9X or NCP13X chassis while mated to the 1NZ unless you went custom mounts. I was mulling this over myself when I found out my 2ZR was going to be incompatible with the NCP131 - I wanted to make sure I could still use my EC6X box with the Quaife. However, I've since acquired yet another Corolla/Scion IM, which I know for a fact will work, and am now in the process of piecing all that together. The 2zr dream lives on.

For the record, anyone considering doing a 2ZR swap in to a 3rd gen should probably think twice before committing to it. You must use a 2ZR and some of the other gear from a ZRE18X (Corolla/Scion IM). It's no where near as simple as the NCP9X swap.

[CrankyOldMan]

... I realized that the 2zr transmission bolts up to the 1NZ engine so now I am trying to confirm if the mounting points for the C50/56 NZ/ZR is the same as the C66/EC6x boxes.

Thanks.
Kimo

That's a good question. I'm pretty sure that the EC6X gearbox requires completely different brackets from the C5X gearboxes. The casting is two pieces, not three and has a different configuration for the shift lever. It might require sourcing mounts from Europe or Japan to use the EC6X. Please let us know (in a new thread) what you find out!

[CrankyOldMan]

For the record, anyone considering doing a 2ZR swap in to a 3rd gen should probably think twice before committing to it. You must use a 2ZR and some of the other gear from a ZRE18X (Corolla/Scion IM). It's no where near as simple as the NCP9X swap.

Correct. I recently looked at a 3rd gen in the local junk yard and it's a very different animal from the 1st/2nd gen (which are basically just cosmetic refresh siblings). The electrical system is laid out differently, has a different fuse/junction box under the hood, different wire harnesses, etc. etc.

What did you find out with the LSD in the EC6X gearbox?

[stidnam]

Correct. I recently looked at a 3rd gen in the local junk yard and it's a very different animal from the 1st/2nd gen (which are basically just cosmetic refresh siblings). The electrical system is laid out differently, has a different fuse/junction box under the hood, different wire harnesses, etc. etc.

What did you find out with the LSD in the EC6X gearbox?

I have a Quaife ATB installed in my EC6X. I had that installed about 6 months ago along with having a bunch of the synchros replaced. While it's not technically an LSD as such, it does a very similar job and in my opinion will be more streetable than a traditional clutch pack LSD.

The last few months have been frustrating to say the least when I found out that the older 2ZR ECU was simply not compatible with the 3rd gen systems. While it would have driven, there would have been multiple systems and sensors that would not have functioned. Funny, the immobiliser did register with the ECU, but that was about the only good news. Therefore, I started mulling over whether to try and install the EC6X with the 1NZ. I didn't spend too much time on that though.

I'm now onto a 2013/2014 Corolla that comes with an updated ACIS based intake manifold. We got that version here in Aus while you guys in NA got the Valvematic version. Unfortunately for me, the ACIS manifold is another 30%ish larger and doesn't clear the radiator fan shroud. There are workarounds and I'll have to do a complete write up here when I have the conversion sorted.

[CrankyOldMan]

Which model Quaife? I've got the QDF15E in my hatch. The track car (Project 2ZR Vios) has a Cusco clutch pack and it's too aggressive for daily/street use in my opinion. Lots of clunking and banging at low speeds before it gets warmed up.

Is the ECU just a matter of pins being in the wrong place or are there whole systems that are electrically incompatible? I forgot to look at the connectors when I was at the junk yard last month.

Any chance you've looked at a 3ZR swap? Looks like you may have access to the 3ZR-FE, we only have the 3ZR-FAE.

[stidnam]

The Quaife in mine is a QDF29E. How's your experience with the Quaife been? This will be my first FWD car with one. I'm hoping for a noticeable difference. Even on the street, and especially in the wet, I find the Yaris struggles with traction (195 tyres).

Regarding the ECU differences, unfortunately it's not just a matter of the pins being different - I'm having to build a little patch harness to get around that problem. Even with a ZRE18X ECU, while the dash cluster will work correctly, the Yaris ABS unit won't talk with the ZRE18X ECU. The ZRE18X ABS unit must be used to overcome this problem (Credit goes to another mate of mine for solving that one). Even Adam, who did the Valvematic conversion, had the same issue.

I have investigated the 3zrfe conversion and it's tempted me on multiple occasions. We got the 3zr in our Rav4, which conveniently came in manual transmission as well. While I think it'll work, I just can't justify it. The cost of the motor is twice the price of a 2ZR. There's also some trade offs it would seem - you sacrifice rpm for a longer stroke, more torque, and that torque band moved further down in the rpms. I think it'd make for a great little round the town car with the extra torque, but I'm not convinced it'd be as fun in the hills and on the track. Change my mind though :) it's not too late.

[CrankyOldMan]

I've been very happy with it. No noise, very good traction in the snow and on ice with appropriate winter tires. Not torque steer on hard acceleration. Wet roads are still not great but it's better than an open diff for sure.

Aah, that's a bummer. I work in automotive and see that kind of incompatibility all the time, even on revision changes within a product family. I made a spreadsheet to verify the Yaris and xD ECU pinouts and they're basically identical. The Corolla is way off and requires a lot of pins to be moved/added/deleted but in theory would work. Our workaround for the speedo was to use the C50 turbine and add the wires into the xD harness (since the xD uses the ABS sensors and CAN to send the speedo signal to the cluster). If your differential can use the OEM speedo driving gear and your casting has the hole for the turbine in it, you may be able to go that way.

ArmstrongRacing and I had talked about the 3ZR lower/long block as a potential "stroker kit" for the 2ZR, mostly because we only have the -FAE head and that requires a LOT more work to make it run on the Yaris platform. I hadn't considered the tradeoff of stroke length (which is where the extra 200 cc's come from) vs RPM and where the torque falls in the power curve. For race applications, it might be better to keep the torque and power peaks closer together. My racing class would also require additional weight if I went to the 2.0L engine, possibly negating or negatively offsetting the 10-15 bhp gains. And I'd have to use the FAE head, so that's probably not happening.

[stidnam]

Yeah I had my spare Yaris shell all wired up pretty quickly. Only had to move around 10 or so pins to make it work. I was so sure it was going to work simply because all the ECU plugs were the same. However, when you look a little closer, all of the 3rd gen Yaris systems and general build of the vehicle more closely resembles that of the Scion IM rather than the XD. Modifying cars was a lot easier before the days of CANBUS :S

For the ZRE18X swap I've purchased some sumitomo plugs that will take the existing Yaris ECU pins and will then allow me to crimp the pigtails of the ZRE182 ecu plug so I can build a patch harness and avoid chopping anything up. The only real difference in wiring then is that the there's no ELS1 on the ZRE18X, the thermos are controlled via the RFC pin, and the +BM wire goes to the larger ECU connector instead of the smaller one on the Yaris. In saying all that, your conversion in NA is more complicated due to that Valvematic system :(

The speedo won't be a problem. I just wrecked a ZRE18X and pulled the ABS actuator out of it. I'll be swapping that in when I do my conversion along with a new master cylinder and reservoir to clear the top of the engine.

Yeah I'd love to have a drive of the 3ZR in a Yaris before committing. I do think it'd make a big difference around town with it's torque band, but I'm just not convinced for the price. If you were simply using the block though with a 2ZR head and a piggy back management system....that might be worth it.

For anyone interested in the quoted numbers that each engine makes

ADM 1NZ = 81kw @ 6000rpm and 141nm @ 4200rpm
ADM 2ZR = 103kw @ 6400rpm and 173nm @ 4000rpm
ADM 3ZR = 107kw @ 6200rpm and 187nm @ 3600rpm

So the 3ZR comes in at 8% more torque at 400rpm earlier when compared to the 2ZR. That's where you'd notice it, but I speculate that the 3ZR wouldn't rev as easy as the 2ZR. The power gains are negligible and I think you end up with a slightly lower redline with the 3ZR.

[CrankyOldMan]

I agree about wanting to drive it before committing to it but there's no way to do that around here. You could at least drive an Altis to see what the engine feels like in general. =)

The other problem would be that I'd have to add another 270 lbs of vehicle weight to be able to run that displacement in the class I'm building for. That also ignores the fact that I'd have to use the FAE head and deal with the valvematic shenanigans, so it's pretty much right out for that line of inquiry. For a streetable daily driver it would be an interesting project, if only for posterity.

[stidnam]

Yeah sounds all too hard and not really worth it at the end of the day. After having driven a 2ZR Yaris, I think I'll be happy with that. I'm most looking forward to having the EC60 gearbox and Quaife though. That actually excites me more than the 2ZR. The shifter and clutch feel is so much nicer than the Yaris setup. I'm anticipating that it'll feel like a completely different car when I'm done.

[daewoo01]

update?

In Sydney, so it was refreshing to hear about some of the challenges the NA Crew have that are easier in Aus, and vice versa.

I just posted up a thread to see if there's anyone in NA that can help source xD bits for a conversion.

We need a three way agreement between NA/Europe/ANZ (Australia and New Zealand) to find and ship stuff to each other.

Been looking to just do a 1NZ conversion in my Echo (NCP10) and had a wrecker quote $1000AUD ($700USD) just for the ECM.

Next step after that is the 2ZR/EC6x Swap, either in the Echo or a Yaris.

[stidnam]

I've slowly been gathering the parts required to do this whole thing in one weekend (fingers crossed). Because the ZRE18X ECU runs completely different plugs to the ZRE152/XD/Yaris ECU, it's necessary to either solder or build a patch harness.

I didn't like the idea of soldering close to 30 wires or the idea of chopping all my current wiring. Not that I'm ever going to reverse this conversion, but I hate the idea of irreversible modifications. So I went out and bought all the plugs I'd need to build a harness to go from the existing Yaris ECU pins to the ZRE18X ECU plug.

https://i.ibb.co/GHw2SWy/patch.jpg

Connectors and terminals are all readily available from Japan and only took a couple of hours to crimp up.

[spoonzz]

So excited to see your progress. I need to find a manual Yaris one day!

Where did you learn all this knowledge by the way? Just researching and trying things on your own?

[stidnam]

So excited to see your progress. I need to find a manual Yaris one day!

Where did you learn all this knowledge by the way? Just researching and trying things on your own?

Hundreds of hours of research and thousands of dollars in mistakes :). The Yaris is good like that for someone starting out. It's simple and cheap.

[stidnam]

Finally got around to doing the conversion. Not finished yet as I need to sort out exhaust and an overflow bottle. However, it starts!

The patch loom seems to have worked a treat and fuse box just needed repinning. So no soldering required.

https://i.ibb.co/nk8JJGB/2zr.jpg

[CrankyOldMan]

Congrats! Feels great to have it running again, I'll bet!

[stidnam]

Feels good knowing it's all going to work. Doesn't feel as good that it's still not driving and I don't yet have a solution for the exhaust.

So close yet so far.

https://i.ibb.co/PzWWBBz/exhaust.jpg

I've just got to have patience. The whole conversion took me a lot longer than I expected. I think I spent a solid 4 - 5 hours wiring it up on the weekend

Also, these are totally amazing - https://www.hi-1000ec.com/product-list/85 makes splicing so much easier vs soldering. They are also what you'd ordinarily find in a factory loom where Toyota have had to splice wires together.

[CrankyOldMan]

I think I used the first few feet of a Corolla exhaust to make mine, just past the first catalytic converter. The rest was custom bent and welded up by a "guy I know" mechanic. If you have to pass emissions testing, that may require some more creative/expensive solutions.

[spoonzz]

Congrats! You'll have it running 100% soon. Often, I wish I didn't have a 2012 automatic yaris because of this thread haha.

[stidnam]

@spoonzz, you can always manual swap yours ;)

Corolla exhaust is partially hooked up and I've run the car for a period of time now. Seems to be working well. I was actually surprised that it all worked first time. Guess I should have trusted all that time I put into the wiring.

I've kept the Corolla fan controller and the only thing remaining there is to create a lead that goes from the Yaris fan to the Corolla fan controller and then permanently earth the Yaris fan relays.

I had also purchased an 86 shift knob to match the new shift pattern of the rolla box, but unfortunately it stops the reverse lockout from being raised. Problem solved now as I'd always planned on running a short extension to address the horrible height of the factory shifter.

https://i.ibb.co/x537gqm/shifter.jpg

Oh and engine cover also fitted now :)

https://i.ibb.co/fr1Vk8r/enginecover.jpg

And yes, the whole front is actually back together again now.

[CrankyOldMan]

Glad to hear it's still coming along!

I'm afraid I can't tell what changed on the shifter. My 6-speed still has the Yaris shifter base, no reverse-lockout involved on that one and there's enough play in all directions to reach reverse on the left.

[spoonzz]

I wouldn't know where to start! You do it for me, I'll pay you hahaha

What's left for you to have the car road worthy? I assume the exhaust and meeting some standards such as emissions?

[stidnam]

@spoonzz, emissions won't be necessary. Using stock exhaust and Corolla cat. All it needs is the exhaust welding up now, which I'm hoping I'll get to by the end of the week.

LOL I am not in the business of engine conversions sorry :). You can have my wiring diagrams and all that work. Actually, here you go. For future reference > 2014 Corolla to 2012 Yaris fuse box wiring

https://i.ibb.co/MCnLb9s/Fusebox.png

@Cranky, that shifter in my photo is a zre182 shifter with the lockout. I've thrown a 50mm extension on the end of it though so the knob clears the reverse lockout. I'm used to driving around with a 20cm shift knob. It's a little excessive, but the Yaris factory position is way too short in my opinion. 50mm increase should be a nice compromise.

[spoonzz]

Hahah, it was a joke (mostly :P)

Thanks for the diagram. I have saved it. By any chance will you be doing a short summary or write up after everything?

...please say yes

[stidnam]

Here's the summary
- 2012 - 2014 Toyota Corolla MT parts
* Engine with all ancillaries
* Gearbox
* Flywheel and clutch
* ABS actuator
* Front exhaust pipe and Oxy sensor
* ECU
* Engine loom
* MAF
* Shifter cage and shift knob
* Small ECU plug that runs to the fuse box
* Radiator fan controller with plugs
- Toyota IST/Scion XD airbox and intake pipe
- GRMN Yaris engine mounts and shifter cables
- NZE141 brake master reservoir
- ZZE122 Corolla drive shafts
- Toyota IST/Scion XD radiator and heater hoses and filler neck
- Generic ebay overflow bottle
- 2019 Yaris ECU mounts

Optional for fuse box wiring and patch loom
- Spare fuse box plug to avoid butchering the one off the 1NZ loom
- 2x 13 pin Sumitomo TS 025 plugs with terminals (matches smaller sized ECU terminals)
- 1x 6 pin Sumitomo TS 090 plug with terminals (matches larger sized ECU terminals)
- 1x 2 pin Sumitomo TS 090 plug with terminals (for terminating the FANL wire and routing the +BM wire from the fuse box to the ECU)
- Set of Hozan P706 crimpers

The conversion is done now and the car is back on the road. AC was re-gassed today.

Everything seems to be working well and it drives pretty much like a Corolla. I've got an unusual clutch squeal when the clutch disc engages. Not sure what's causing it as everything was machined and cleaned prior to installation. I'll have to keep my eye/ear on it and fingers crossed it goes away itself.

While I've had to do a lot of research, the actual conversion was pretty straight forward and I've been impressed that everything has worked straight off the bat.

I have to be honest, this swap isn't going to blow you away. It's a noticeably quicker car now, but I feel that's mainly due to the bump in torque. The torque has made it more driveable - can cruise around in 3rd and 4th gear without having to drop back all the time, and the take off from the lights is a lot easier. Give me a few more days though and I'm not even going to remember what the 1NZ was like.

The EC60 box out of the Corolla is a nicer box than the factory Yaris 5 speed. Shift feel is improved, but first gear is way too short. Frustratingly short. It's pretty much there to get you off the line and then you hit second. In this regard, it'd probably be better off looking at a C5X box with better ratios. However, the Quaife is amazing. Totally worth doing.

There is one thing that really feels like a step back from the 1NZ - the rev hang that comes with the 2ZR. It's so much worse than the 1NZ in the 3rd gen Yaris. I thought I knew what rev hang was, until I drove the Yaris with the 2ZR. You get used to it, but I feel the EC60 ratios exacerbate the problem. If I were doing this over again, I'd consider getting a light weight flywheel to try and help the problem. Though I think a lot of it has to do with the ECU programming.

In summary, if you want to know what it's going to be like to do a 2ZR conversion to a Yaris, go and drive a manual Corolla to get a feel for the motor and gearbox, then go drive an 86 to get a rough idea of how quick the car will feel (give or take).

[CrankyOldMan]

Congrats! So glad you've got it back on the road and were able to work out all the details. It's good to get feedback on the EC60 vs the C50 since I've been considering sourcing one for my 2ZR daily driver. Seems like a lot of work for minimal gains, possibly even a net loss.

[stidnam]

Yeah pretty happy with it so far and still kind of surprised that everything worked with no error codes popping up.

Regarding the EC60 box. Here's my list of pros and cons for anyone considering one, and I'd strongly suggest driving a Scion IM/Corolla before committing.

Pros
- Good shift feel
- Easily accessible in Australia
- Quaife diff available
- The only 6 speed box that's going to bolt into a Yaris without modification to the chassis rail
- Perfectly fine for every day driving
- It's not an automatic LOL

Cons
- Requires custom or GRMN shifter cables
- Requires GRMN gearbox mount
- Short first gear (I find myself changing at around 20 - 25km/h)
- Concentric slave cylinder - which can actually be a positive for pedal feel
- High clutch engagement point
- Limited to no heavy duty clutch options
- Limited aftermarket flywheel options
- 6th gear ratio isn't really any better than the 5th gear ratio in a 5 speed box. You're just getting one extra gear jammed in the mix.
- No short shifter options or upgrades for the shifter cage

I do know about the MWR options for clutches and flywheels. Though expensive options for Australia and I'd rather try and use the OuterPlus flywheel from Japan vs the MWR option. Though I wasn't about to drop $1000 on a flywheel :)

[CrankyOldMan]

That's some good solid feedback on the 6-speed. I discovered the same thing when researching gear ratios for my custom 5-speed build (almost a decade ago?!?) and decided that it wasn't worth the hassle of notching the frame. That said, Project 2ZR Vios has that done and the 6-speed is absolutely worth it on the track.

That's a lot of weight to ship all the way around the world, for sure. I live only a few hours away from MWR and basically get overnight shipping for the price of 3-day ground. =)

[stidnam]

I did some research last night into the ratios and interesting to see that the Lotus EC60 runs a 4.3x final drive with slightly different ratios on 4th, 5th, and 6th I believe. However the first few gears are the same. This is in comparison to the Corolla's final drive of 4.5x (can't remember the exact last number).

I think I would have preferred the 4.3 final drive in the Yaris. Ashame.

The other thing to note though is that in theory, any upgrades for the Lotus Elise S3 gearbox should equally apply to the EC60. Gearsets etc...however everything I've seen has been extremely expensive.

[RagnaCaT]

I did some research last night into the ratios and interesting to see that the Lotus EC60 runs a 4.3x final drive with slightly different ratios on 4th, 5th, and 6th I believe. However the first few gears are the same. This is in comparison to the Corolla's final drive of 4.5x (can't remember the exact last number).

I think I would have preferred the 4.3 final drive in the Yaris. Ashame.

The other thing to note though is that in theory, any upgrades for the Lotus Elise S3 gearbox should equally apply to the EC60. Gearsets etc...however everything I've seen has been extremely expensive.

Hi, it's been a while since I have posted but wanted to ask about that EC60 is that that newer 6 Speed? Currently I'm working on a celica C60 transmission dropping the internals into a Yaris gearbox.

[stidnam]

Yes, it's the newer generation 6 speed when compared to the C60. It does however have a really short first gear. First and second ratios could have been a bit longer. There are a number of variations of the box with difference ratios, but we only got the one here in Aus.

[saikouguy]

Is it possible to swap bellhousings on the EC and C series boxes? It'll be a great option if they can as you mentioned it being smaller and probably more plentiful

[stidnam]

Is it possible to swap bellhousings on the EC and C series boxes? It'll be a great option if they can as you mentioned it being smaller and probably more plentiful

Doubtful. What are looking to do? swap the EC box onto a 1NZ or 2NZ? If you want to upgrade the box on a stock Yaris, I'd look into gutting the existing box to replace it with different gearing and an LSD as well. The EC box isn't really worth it. Ratios are not great.