5 Spd to 6 Spd Conversion DIY

[zachryboles]

yah i was thinking if anyone would actually do this lately and its nice to see its being considered. All we need to see now is that matched with the 2zz motor.

[Bluevitz-rs]

Originally Posted by zachryboles

yah i was thinking if anyone would actually do this lately and its nice to see its being considered. All we need to see now is that matched with the 2zz motor.

I shouldn't be all that hard. The 2ZZ uses a single pulley with one huge belt to run all the accessories, but the whole motor (from the surface the transmission bolts to) is wider by about 1". So on the echo at least, you'd need to cut about .5" thick portion of the frame away to clear the pulley and belt. Then you'd need the C60 and C160 transmissions to swap bell housings like as if you were doing it to the 1NZ in order for the axles to fit. Or just have custom inner CV joints put on the stock axles and use the C60. Which is probably cheaper.

Then I'm not sure if you'd need a custom header fabbed up and custom exhaust. One plus on the Yaris is that it uses electric PS, so you wouldn't need to worry about plumbing the PS pump and could delete it from the motor. Next, plumbing the A/C is optional but shouldn't present any issues.

Last, wire it all up. Chances are the most of the Yaris wiring will plug in, but if you're going to all the trouble of installing this engine you might as well use the 2ZZ harness.