Quote:
Originally Posted by DieselHybrid
You are correct, the '06 Corolla XRS (which is what I drive) has the exact same Yamaha-designed 2zz-ge engine and the exact same C60 6-speed tranny as the Celica GTS. 
I've researched the "easy" swaps ad nauseum. If the Celica/Matrix/Vibe 180 bhp GTS models had had more favorable gearing- I would have swapped for one of those long ago.
So it looks like I need a custom 6th gear? I need something taller than the 0.725 6th gear that comes stock in my C60 tranny. |
C64
Gear ratios for this transmission.
1st 2nd 3rd 4th 5th 6th Final
3.166 2.050 1.481 1.166 0.916
0.815 4.529
Applications:
2000-2005 Toyota Celica with the 2ZZ-GE engine
Toyota Corolla Sportivo (Australia)
Toyota Corolla TS (Europe)
Toyota Corolla Compressor (Europe)
2005-2006 Toyota Corolla XRS (USA)
Toyota Corolla Fielder Z Aero Tourer (Japan)
Toyota Corolla Runx Z Aero Tourer (Japan)
2004-2007 Lotus Elise (North America/UK) (mid engine application)
2005-2007 Lotus Exige (US/UK) (mid engine application)
Your transmission has the 0.815 6th gear I believe, you may wish to attempt to find the C60 transmission that I suggested to get the 0.725 6th I am talking about.
If you are dead set on getting a custom sixth gear, try and get into contact with Doug Heffron, creator of the XFi "Areo Car". He made a taller fifth gear for his metro to get 75mpg on the highway.
Check out this article for more details.
Hope that clarifies that even further.
Edit: Here is the quote from metrompg.com:
MetroMPG.com: The newspaper article mentions changes to the transmission - can you explain that in a bit more detail?
Doug Heffron: The transmission was the hardest part. 1 found a way to change the 5th gear ratio. I made the gears myself on my lathe. A very proud moment for me. The local machine shops wanted $2,500.00 for 2 gears.