How tough is the RX8 6-Speed transmission?
#26
Boosted Kiwi
iTrader: (2)
Been running one on my (350whp) setup for over a year .
Last edited by Brettus; 04-01-2014 at 07:39 PM.
#27
Out of NYC
iTrader: (1)
You can buy the RX8 5 speed transmissions on ebay ... There are a few that have imported them from Japan to the US . This is the same transmission (essentially) as what was in the last of the RX7s but with all the right stuff on them to bolt right in without any modification.
Been running one on my (350whp) setup for over a year .
Been running one on my (350whp) setup for over a year .
What about the sensors? Any repin required if using it on s1?
![Naughty](https://www.rx8club.com/images/smilies/naughty.gif)
#33
Registered
The RX-8 Transmission isn't built by Mazda. It's built by Aisin-Toyota and it's called the AZ6. It's the same gearbox used by the Mx-5, the Honda S2000, the Toyota Altezza / IS200 and the Nissan S15 Silvia.
Nissan Silvia owners say the gearbox is good for no more than 400hp. Not sure how that translates to SR20dett torque figures, i suppose around 450/500Nm.
Same gearbox in S2000, RX-8 and IS200?
List of Aisin transmissions (Manual transmissions)
AZ6 — 6-speed
Honda S2000, Mazda Miata/MX-5/Roadster, Mazda RX-8, Toyota Altezza/Lexus IS200, Toyota 86/Scion FR-S/Subaru BRZ
http://en.wikipedia.org/wiki/List_of_Aisin_transmissions
Nissan Silvia owners say the gearbox is good for no more than 400hp. Not sure how that translates to SR20dett torque figures, i suppose around 450/500Nm.
Same gearbox in S2000, RX-8 and IS200?
List of Aisin transmissions (Manual transmissions)
AZ6 — 6-speed
Honda S2000, Mazda Miata/MX-5/Roadster, Mazda RX-8, Toyota Altezza/Lexus IS200, Toyota 86/Scion FR-S/Subaru BRZ
http://en.wikipedia.org/wiki/List_of_Aisin_transmissions
Last edited by Rudolph; 04-06-2014 at 09:33 AM.
#35
#36
#38
Registered
Hella late bump :P
Bigger question adapting the tranny's !? in the process of making a 1" adapter plate but just realized the rx-8 spline shaft wont reach the clutch disc, I have hooked up a Fidanza flywheel, rx-8 clutch disc (both 1j and rx-8 clutch disc's are 240mm or 9,1/2") then stage 2 F1 1j pressure plate,,,,,,, think ill need to make a spacer between the 1J and the 1J's flywheel to push the clutch assembly closer to the spline shaft? has anyone got this far / had this problem?
Bigger question adapting the tranny's !? in the process of making a 1" adapter plate but just realized the rx-8 spline shaft wont reach the clutch disc, I have hooked up a Fidanza flywheel, rx-8 clutch disc (both 1j and rx-8 clutch disc's are 240mm or 9,1/2") then stage 2 F1 1j pressure plate,,,,,,, think ill need to make a spacer between the 1J and the 1J's flywheel to push the clutch assembly closer to the spline shaft? has anyone got this far / had this problem?
#40
Out of NYC
iTrader: (1)
Use RX-8 5 sp Transmission, it's basically a RX-7 transmission with bellhousing that fits to RX-8's Rear Iron, it's directly bolt on to S1 no modifications necessary
S2 Transmission on S1 required you to change the neutral / Backup switch connector to S1 version, just cut the old one and mate to new, that's the only mod u need.
Im sourcing a 5MT tranny right now, should be here next month, gonna take pics when it's here
S2 Transmission on S1 required you to change the neutral / Backup switch connector to S1 version, just cut the old one and mate to new, that's the only mod u need.
Im sourcing a 5MT tranny right now, should be here next month, gonna take pics when it's here
![Smilie](https://www.rx8club.com/images/smilies/smile.gif)
Last edited by nycgps; 07-08-2014 at 09:51 AM.
#41
I'mma firin' mah lazor!!!
Nycgps, please keep us updated! I've been toying with the idea of running a 5 speed for a while now, very interested in the swap.
Thanks,
Drew
Thanks,
Drew
#42
BECAUSE RACECAR
iTrader: (10)
Also interested.
I'm just hoping my S1 transmission survives long enough for me to scrape together money for a dogbox solution but a 5-speed RX-8 trans might have to be put in if I can't afford that route.
I don't think I've really seen anyone at 500+RWHP with these things so I guess I'll find out how long it takes for it to grenade... hopefully it survives at least dyno tuning and like one event...
I'm just hoping my S1 transmission survives long enough for me to scrape together money for a dogbox solution but a 5-speed RX-8 trans might have to be put in if I can't afford that route.
I don't think I've really seen anyone at 500+RWHP with these things so I guess I'll find out how long it takes for it to grenade... hopefully it survives at least dyno tuning and like one event...
#43
Out of NYC
iTrader: (1)
- in Japan, not much people get the 5 MT, cuz it only available for standard power , BASE MODEL of rx-8. so they are pretty rare in the first place
- even if it does exist, it has at LEAST 150K KM, it's about 120K miles? and shipping from japan gonna cost at least 500 bux so Im not gonna take that risk ... unless I really have to
there are way more 6 MT to pick (duh) with less miles for cheap (no one wants a tranny), so whatever shows up I think it's worth it, I will get it, 5 mt or 6mt
Also interested.
I'm just hoping my S1 transmission survives long enough for me to scrape together money for a dogbox solution but a 5-speed RX-8 trans might have to be put in if I can't afford that route.
I don't think I've really seen anyone at 500+RWHP with these things so I guess I'll find out how long it takes for it to grenade... hopefully it survives at least dyno tuning and like one event...
I'm just hoping my S1 transmission survives long enough for me to scrape together money for a dogbox solution but a 5-speed RX-8 trans might have to be put in if I can't afford that route.
I don't think I've really seen anyone at 500+RWHP with these things so I guess I'll find out how long it takes for it to grenade... hopefully it survives at least dyno tuning and like one event...
I don't think even the Rx-7 stock box can save you from 500+ rwhp, u might considered one of the hks box or whatever dogbox u can find.
Last edited by nycgps; 07-08-2014 at 11:17 AM.
#49
Registered
iTrader: (25)
Yes a new S2 6 spd is quite a but less than a new 5 spd, but the 5 spd is not a standard USDM part system item so this is likely why. The used JDM 5-spd box I mentioned was listed at $300 though. It's not a good choice for NA due to the steeper gearing differences and IMO it's not really strong enough for FI either, but can get by as long as you're not beating on it hard & heavy like a drag trans. Thats why I didn't buy it. Ultimately I'd rather drop the cash for a hardcore gearset swap if I ever move on to that next level. Until then the S2 6-spd will (hopefully) suffice.
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