RX8 Tranny in an RX7
10-12-2004, 08:46 AM
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RX8 Tranny in an RX7
Big disscusion on the 7 board about an 8 tranny in a 1st gen 7. It would be great to have the 6 speed, but there seems to be some disagreement whether or not the 8's tranny is strong enough. Anybody have any comments? Quite a few people seem to have HEARD that there is problems with this transmision. Any help would be appreciated.
10-12-2004, 08:59 AM
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There is much talk that it is not as strong as the ones in the FC Turbo or FD. But to be specific as to how much power it can handle, I can't answer that. As compared to a transmission in an SA/FB, I would think the RX-8's is strong than those. But I may be off on that also.
10-12-2004, 05:39 PM
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I can't truly say the RX-8's transmission is weak, but I will say it may have a hard time handling power compared to the R-series transmissions (TII, FD). If you want a 6-speed, invest in a bulletproof JZA80 Supra transmission. I hear they can handle insane amounts of power. Look at all the 800+ rwhp MKIV's.
As a side note, Charles Hill managed to install a 50+ shot nitrous system on his RX-8. So far, his transmission has held up quite well. Perhaps there is some strength in this gearbox.
As a side note, Charles Hill managed to install a 50+ shot nitrous system on his RX-8. So far, his transmission has held up quite well. Perhaps there is some strength in this gearbox.
10-14-2004, 08:20 PM
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Originally Posted by shelleys_man_06
I can't truly say the RX-8's transmission is weak, but I will say it may have a hard time handling power compared to the R-series transmissions (TII, FD). If you want a 6-speed, invest in a bulletproof JZA80 Supra transmission. I hear they can handle insane amounts of power. Look at all the 800+ rwhp MKIV's.
As a side note, Charles Hill managed to install a 50+ shot nitrous system on his RX-8. So far, his transmission has held up quite well. Perhaps there is some strength in this gearbox.
As a side note, Charles Hill managed to install a 50+ shot nitrous system on his RX-8. So far, his transmission has held up quite well. Perhaps there is some strength in this gearbox.
http://www.jericoperformance.com/4.html
10-14-2004, 10:20 PM
#8
A "taller" gear, meaning that the rate of increase in engine speed vs vehicle velocity is higher than a "shorter" gear. The result is that the taller gear will pull harder, but will reach maximum engine RPM at a lower output shaft (wheel) RPM than a shorter gear. Neither is better or worse, taller gears accelerate better, shorter gears give you a better top end speed. I don't want to cruise at 145, I want to get there fast.
10-15-2004, 02:28 AM
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I don't have a 12a in mine. It is a GSL-SE, 13b 6 port. I must say that even with it streetported and a header with a straight pipe I don't think it will make enough power to where the tranny will break. At least in my way of thinking. I may be wrong though. Any thoughts?
10-15-2004, 04:59 PM
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Originally Posted by wakeech
...anyways.
don't forget that the 13B-MSP is about twice as strong as even the best running 12A.
don't forget that the 13B-MSP is about twice as strong as even the best running 12A.
The 13B-MSP has twice the HP, but not twice the TQ and thats what hurts transmissions. More like 1.5x the TQ at best?
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