The Rx8 6-Speed into an FB Thread!

Whizbang · 11-14-2009, 03:46 PM

Im sure much of the information can cross into other chassis.

General Rx8 Transmission Information

Mazda Rx-8 04-current 13B Renesis Gearbox (manual)
1st: 3.815
2nd: 2.260
3rd: 1.536
4th: 1.177
5th: 1.00
6th: 0.787

The most popular "close ratio" conversion i have seen is the miata box. Below is a comparison of the miata box to the Rx8 box given a 9000 shift point and 4.78 final drive (my personal setup).

Now here is the 12a transmission i have currently versus the Rx8. much better!

And also the Turbo II's R type transmission (87-88) compared to the Rx8. Again, 1st and 2nd are similar, but from there on out, for my natural aspiration application, the gearing is superior.

11-14-2009, 03:46 PM	#1
Whizbang Respecognize! Join Date: Jul 2008 Location: Δx = ħ/2Δp Posts: 3,190 Rep Power: 20	The Rx8 6-Speed into an FB Thread! Im sure much of the information can cross into other chassis. General Rx8 Transmission Information Mazda Rx-8 04-current 13B Renesis Gearbox (manual) 1st: 3.815 2nd: 2.260 3rd: 1.536 4th: 1.177 5th: 1.00 6th: 0.787 The most popular "close ratio" conversion i have seen is the miata box. Below is a comparison of the miata box to the Rx8 box given a 9000 shift point and 4.78 final drive (my personal setup). Now here is the 12a transmission i have currently versus the Rx8. much better! And also the Turbo II's R type transmission (87-88) compared to the Rx8. Again, 1st and 2nd are similar, but from there on out, for my natural aspiration application, the gearing is superior. __________________ For current updates and event coverage check out Follow on Twitter! @WhizbangRally Whizbang Rally's Webpage \| Facebook Last edited by Whizbang; 11-14-2009 at 05:32 PM.