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Tnhatch03
04-20-2008, 03:37 PM
Thank you K20a.org!


Here is a table i put together of all the transmission gear ratios in all the cars i could find published data for.
If anyone finds published data on the CTR please let me know so i can add it to the chart.

If anyone has the tranny codes of the engines listed below, please let me know so that i can add that info to the table. Please be model specific with the tranny codes so that we can see if some models use same exact tranny etc.

http://img.photobucket.com/albums/v504/MJ23FE/Tranny%20Gear%20Calculations/K-SeriesTransmissionTablev3-28-08re.jpg


All my info is from honda.co.jp, acura.com, new-cars.com.
http://www.honda.co.jp/auto-lineup/integra/grade-data/index.html
http://www.honda.co.jp/auto-lineup/accordeuro-r/grade-data/index.html
http://new-cars.com/2004-new-car-reviews.html
I noticed Acura.com rounds up when i compared to ratios found on honda.co.jp. (Example: 1st gear is 3.27 instead of 3.266.)

Tranny notes i have put together:
1) 01-06 accord euro-r and 05-06 rsx-s have same tranny.
2) 01-06 itr has the same 1-3 gear ratios as the 02-06 rsx-s, euro-r, and 06 si but has different 4-6 gear ratios.
3) K20A2, K20A euro-r, K20Z1 all have the same 1-6 gear ratios.
4) all 6-speed tranny's except 02-04 rsx-s & 06+ CTR, have the same 4.764 FD.
5) 06 si and 04-06 tsx have same 6th gear.

-Jalal

dc5 jet
04-20-2008, 03:51 PM
wow very useful. subscribed :thumb:

DarkSiRacer
04-20-2008, 04:25 PM
I saw this over at Honda-Tech a few weeks ago... its a very nice guide to k-series transmissions

Guardian
05-05-2008, 03:56 PM
gear ratio calculator
http://www.fatboyraceworks.com/gears/