Yaris Engine Swaps!!!

[Snake]

Originally Posted by FlintArrow

A stock 1nz-fe can only see so much boost and power before things start breaking, it was never designed to. Being an FE style engine the rods, pistons, and pretty much everything else was designed entirely for economical reasons. A BUILT 1nz as any engine can take much more punishment and with the right fuel/engine management and head/cam work it can produce serious power.

The difference is that the Matrix, Celica, and MR2 all share the 1zz-fe standard engine. The Matrix XRS, Celica GT-S, and Corolla XRS had the 2zz has a standard feature. This fact means the motor mounts, transmission linkages, etc are similar enough to justify simple changes during the assembly line. The Yaris, X series of Scion, Echo, etc never had anything available except 1nz and some 1.0/1.3 options in other places of the world.

The Celica ECU or any 2zz ecu will work with a swap as long as your able to wire up the main functions from one harness to another. This of course takes some wiring ability and perhaps the discipline to not fixing every last wire (ex: not getting all accessories to work).

The real problem is getting the mounts to line up, getting the linkage right, wiring done, exhaust system plumbed, powersteering to work, ac system to link up, etc. The ABS and restraint systems will be nearly impossible.

A 2zz is definitely possible and has been done. However, these are not Honda engine swaps that two high school kids do over a weekend and a few beers. They even make kits for those guys.

I think the Yaris crowd needs a little bit more power and more work on suspension and weight loss. You can only put down so much power with fwd and we dont have factory fender flairs. Stock SRT-4's have a chore putting down 230 at the wheels in stock trim. Much past this the game just gets silly. Sure slicks and straight lines (60mph+ as the kids do these days) are one thing but turn the wheel and try leaving an apex and your going to get walked on at some point to a rwd or awd car.

While its a fun idea to make a wild flame-spitting tire smoking Yaris but its probably not the most practical. Any Yaris that can corner flat and put down 15-16 second quarter mile times is a blisteringly fast car on any track. Remember a Cooper S only do low to high 15's stock.

not a bad post only thing i disagree with is this "You can only put down so much power with fwd and we dont have factory fender flairs. Stock SRT-4's have a chore putting down 230 at the wheels in stock trim."
dont know about this considering my SRT puts down over 600 fwhp, so I kind of disagree with this one.
Ive seen front wheel drive cars put down close to 1000 fwhp...
For an SRT-4 to put down 300fwhp, you only need $1500 in aftermarket mods on the motor, so its not that difficult.

If you manage to get 200 horse out of any motor at the wheels on the yaris with a good amount of weight reduction, your talking a low 13 sec hatchback thats not too bad

[eTiMaGo]

Originally Posted by Snake

not a bad post only thing i disagree with is this "You can only put down so much power with fwd and we dont have factory fender flairs. Stock SRT-4's have a chore putting down 230 at the wheels in stock trim."
dont know about this considering my SRT puts down over 600 fwhp, so I kind of disagree with this one.
Ive seen front wheel drive cars put down close to 1000 fwhp...
For an SRT-4 to put down 300fwhp, you only need $1500 in aftermarket mods on the motor, so its not that difficult.

If you manage to get 200 horse out of any motor at the wheels on the yaris with a good amount of weight reduction, your talking a low 13 sec hatchback thats not too bad

Yes, but what he was explaining is that it's only really good for straight line speed. If you're looking to have it go round a track, or even just daily driving that much horsepower can seriously negatively affect your handling with front wheel drive, unless you have a real feather foot.

[FlintArrow]

Originally Posted by Snake

not a bad post only thing i disagree with is this "You can only put down so much power with fwd and we dont have factory fender flairs. Stock SRT-4's have a chore putting down 230 at the wheels in stock trim."
dont know about this considering my SRT puts down over 600 fwhp, so I kind of disagree with this one.
Ive seen front wheel drive cars put down close to 1000 fwhp...
For an SRT-4 to put down 300fwhp, you only need $1500 in aftermarket mods on the motor, so its not that difficult.

If you manage to get 200 horse out of any motor at the wheels on the yaris with a good amount of weight reduction, your talking a low 13 sec hatchback thats not too bad

I definitely agree with your response; it was a misunderstanding.

I re-read my post and I didnt mean "SRT-4's have a problem producing 230 hp" but rather "traction issues arise with street tires and much more than 230 whp on various tracks."

What I really should have said is: "you can only attain so much streetable horsepower before traction issues arise; FWD and street radials lowers those limits."

I love SRT-4's. They are a blast and well designed. They punish other drivers who have spent twice as much. However, many owners go the power route because its more satisfying than making a well-balanced performance car. As you have noted making TONS of power with the 2.4T is about as easy as cooking Top Ramen in the microwave.

If the Yaris had stout internals, a turbo and huge I.C., and a Quaife from the factory they would do the exact same thing.

However, I bet a Yaris with 150 whp and some little R-Compounds would be a serious toy! It might only trap 90 in the quarter but your arm wouldnt be in a sling from a track day of torque steer. Lol.


PS: Sorry for officially threadjacking the topic.

I still stand that a 2zz-ge swap would be supreme if the time or money were attainable. A solid 155-160 whp in a Yaris would be extremely fun and reliable. I would use a PowerFC or similar unit to smooth the VVTL-I curve so it wouldnt be as severe.

Otherwise for 99% of the other people I would rather suggest a very mild boost situation with an insurance fund for 1nz-fe's. One per season or a mild bottom-end build with a very safe tune.