Naturally Aspirated Performance Forum Discussion of naturally-aspirated rotary performance. No Power Adders, only pure rotary power! From the "12A" to the "RENESIS" and beyond.

Common transmission pairings for a 13B PP

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Old 10-13-17, 02:18 PM
  #26  
Rallye RX7

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I had no idea they even built them up to 2010...
Old 10-13-17, 09:08 PM
  #27  
10000 RPM Lane

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Originally Posted by Kenku
The problem with the S2 RX-8 box from my point of view is that there's no options to fix the annoying 4th gear ratio like there is with the Aisin box.
not sure what specifically you’re looking for, but for the 2009-2011 RX8 6-spd trans the 3rd and 4th gears in the NADM version are different than all the other markets:

North America.. 3rd Gear Ratio 1.536, Rest of World 1.640
North America.. 4th Gear Ratio 1.177, Rest of World 1.259

the parts should be a direct swap or you could purchase an imported version

and the RX8 trans shifts at 10k no problem

also, while the Honda S2k Aisin trans shares a similar model name to the Mazda Aisin, it otherwise is completely different in almost every regard. Same for the Toyobaru Aisin. All this stuff was hypothesized many years ago and it’s a dead end street. On the Aisin the bellhousing is integral to the casing, not a bolt-on. However, there is a closer ratio 1st, 2nd, and 6th gear ratio available

http://revo-tune.jp/catalog/products/detail/127

and PAR Engineering offers full dog and synchro gearsets for the Aisin too, which for the cost they allow fully custom gear ratios at no extra charge

Barrington is looking at a conversion for the later toploader version, but not available yet


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Last edited by TeamRX8; 10-13-17 at 11:07 PM.
Old 10-14-17, 01:20 PM
  #28  
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Originally Posted by fidelity101
I had no idea they even built them up to 2010...
neither did they! the parts catalog used to go up to 2017




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