gear ratio's
12-05-03, 12:42 AM
#1
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gear ratio's
anyone know the gear ratios,preferably mph/1000rpm in each gear for a japanese typr r or rs?
are all 5speed rx's the same gearing or there different versions?
beast
are all 5speed rx's the same gearing or there different versions?
beast
12-05-03, 06:45 AM
#2
Weird Cat Man
All RX-7s are not the same.... The FC chassis had at least three differently setup up gearboxes that I know of... (NA, 87-88 TII, 89-91 TII). The FDs in the USA all had the same ratios in every year... The Japanese market FDs did have some different gears than the USA models, but I -think- that the only differences were in the 5th gear ratio (and also some models had a 4.33 diff).
Every "turbo" gearbox that I know of on RX-7s had 1-4th as follows
1 - 3.483
2 - 2.015
3 - 1.391
4 - 1.000
Then there are three different 5th ratios I know of...
0.719, 0.762, and 0.806
Sorry I can't give exact specs... you can look them up on the 'net.
As for me, I swapped out my FD-USA-5th gear (0.719:1) with a FD-Jap-5th from a special model... the Bathurst R... and I have a 0.806:1 5th now
Every "turbo" gearbox that I know of on RX-7s had 1-4th as follows
1 - 3.483
2 - 2.015
3 - 1.391
4 - 1.000
Then there are three different 5th ratios I know of...
0.719, 0.762, and 0.806
Sorry I can't give exact specs... you can look them up on the 'net.
As for me, I swapped out my FD-USA-5th gear (0.719:1) with a FD-Jap-5th from a special model... the Bathurst R... and I have a 0.806:1 5th now
12-05-03, 08:18 AM
#3
Originally posted by Wargasm
All RX-7s are not the same.... The FC chassis had at least three differently setup up gearboxes that I know of... (NA, 87-88 TII, 89-91 TII). The FDs in the USA all had the same ratios in every year... The Japanese market FDs did have some different gears than the USA models, but I -think- that the only differences were in the 5th gear ratio (and also some models had a 4.33 diff).
Every "turbo" gearbox that I know of on RX-7s had 1-4th as follows
1 - 3.483
2 - 2.015
3 - 1.391
4 - 1.000
Then there are three different 5th ratios I know of...
0.719, 0.762, and 0.806
Sorry I can't give exact specs... you can look them up on the 'net.
As for me, I swapped out my FD-USA-5th gear (0.719:1) with a FD-Jap-5th from a special model... the Bathurst R... and I have a 0.806:1 5th now
All RX-7s are not the same.... The FC chassis had at least three differently setup up gearboxes that I know of... (NA, 87-88 TII, 89-91 TII). The FDs in the USA all had the same ratios in every year... The Japanese market FDs did have some different gears than the USA models, but I -think- that the only differences were in the 5th gear ratio (and also some models had a 4.33 diff).
Every "turbo" gearbox that I know of on RX-7s had 1-4th as follows
1 - 3.483
2 - 2.015
3 - 1.391
4 - 1.000
Then there are three different 5th ratios I know of...
0.719, 0.762, and 0.806
Sorry I can't give exact specs... you can look them up on the 'net.
As for me, I swapped out my FD-USA-5th gear (0.719:1) with a FD-Jap-5th from a special model... the Bathurst R... and I have a 0.806:1 5th now
12-05-03, 03:08 PM
#5
Weird Cat Man
Yeah the USA 5th is BS. It's purely a fuel economy gear/keep the engine at low rpm gear. The 762 or 806 are much better IMO. True, at 90 mph, I'm at 4000, but whatever.
Brian
Brian
12-07-03, 12:42 AM
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what are the max speeds in each gear for the jap spec then?what does the rx7 actually rev to as i have read 9000rpm but have seen the redlines at 8000!!
beast
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