S5 TII 5th gear ration, JSpec vs USSpec
10-23-04, 10:46 PM
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S5 TII 5th gear ration, JSpec vs USSpec
Did a search, but couldn't find a direct answer to this question. What I've read is that:
S4 TII 5th gear is .762:1
S5 TII 5th gear is .711:1
JSpec S5 TII 5th gear isn't as tall as a USSpec 5th gear. So, what IS the gear ratio of JSpec S5 TII 5th gear? .762:1 again?
S4 TII 5th gear is .762:1
S5 TII 5th gear is .711:1
JSpec S5 TII 5th gear isn't as tall as a USSpec 5th gear. So, what IS the gear ratio of JSpec S5 TII 5th gear? .762:1 again?
10-23-04, 11:13 PM
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Got an answer for S4 Jspec
5th gear ratio for JSpec S4's is .806:1. So, not as tall as either US Spec 5th gears. Speculation is that .806 is the case for S5's, but still looking for confirmation. TurboTed, you out there??
10-24-04, 03:57 AM
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I was always under the impression that all TII trannies (Aspec) had the same gear ratios. There was no difference between S4 and S5. I can't say the same for Jspec. But I do think the Aspec S4 and S5 TII trannies were the same.
10-24-04, 06:42 AM
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Originally Posted by flamin-roids
I was always under the impression that all TII trannies (Aspec) had the same gear ratios. There was no difference between S4 and S5. I can't say the same for Jspec. But I do think the Aspec S4 and S5 TII trannies were the same.
10-24-04, 06:49 AM
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Originally Posted by flamin-roids
But I do think the Aspec S4 and S5 TII trannies were the same.
Side note, US-spec FD3S runs the same 0.719 5th gear as a Kouki FC3S turbo.
-Ted
10-24-04, 11:48 AM
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So, conclusion is..........
ASpec S4 TII 5th gear is .762:1
ASpec S5 TII 5th gear is .711:1
JSpec S4 & S5 TII 5th gear is .806
Right?
ASpec S5 TII 5th gear is .711:1
JSpec S4 & S5 TII 5th gear is .806
Right?
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10-24-04, 03:35 PM
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Boy, if this ever gets on Jeopardy, I'm ready. :-)
Ok, with the exception of the limited production Infini IV RX-7 who has 5th gear at 0.72:1 complimented by a rear diff ratio of 4.30, the conclusion is:
ASpec S4 TII 5th gear is .762:1
ASpec S5 TII 5th gear is .711:1
JSpec S4 & S5 TII 5th gear is .806
Right?
Ok, with the exception of the limited production Infini IV RX-7 who has 5th gear at 0.72:1 complimented by a rear diff ratio of 4.30, the conclusion is:
ASpec S4 TII 5th gear is .762:1
ASpec S5 TII 5th gear is .711:1
JSpec S4 & S5 TII 5th gear is .806
Right?
10-25-04, 01:53 AM
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S4 pull harder than S5
Based on the above said, this is true but for 5th gear only. Especially true if JSpec, but again 5th gear only.
10-25-04, 08:56 PM
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Um, where did you get the 0.711 number?
I'm pretty sure it was 0.719, and my quick web search only turned up several references to an FD3S 5th gear of "0.72", which is probably rounded up from 0.719.
-Ted
I'm pretty sure it was 0.719, and my quick web search only turned up several references to an FD3S 5th gear of "0.72", which is probably rounded up from 0.719.
-Ted
10-26-04, 02:13 AM
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Originally Posted by flamin-roids
So 5th gear will pull harder in a S4 than a S5 but run out sooner?
what rx7 pulls in, OR runs out of 5th gear???
well n/a's are like .66:1 bleh.
10-26-04, 09:25 AM
#15
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Originally Posted by HOZZMANRX7
Boy, if this ever gets on Jeopardy, I'm ready. :-)
Ok, with the exception of the limited production Infini IV RX-7 who has 5th gear at 0.72:1 complimented by a rear diff ratio of 4.30, the conclusion is:
ASpec S4 TII 5th gear is .762:1
ASpec S5 TII 5th gear is .711:1
JSpec S4 & S5 TII 5th gear is .806
Right?
Ok, with the exception of the limited production Infini IV RX-7 who has 5th gear at 0.72:1 complimented by a rear diff ratio of 4.30, the conclusion is:
ASpec S4 TII 5th gear is .762:1
ASpec S5 TII 5th gear is .711:1
JSpec S4 & S5 TII 5th gear is .806
Right?
Then changed again in 89 to a .719
So, it should be:
Aspec 86-87: .762:1
Aspec 88: .711:1
Aspec 89-91: .719:1
And I have only seen .806 for the Jspecs.
10-26-04, 11:09 PM
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Ok, final final conclusion
1987 ASpec S4 TII 5th gear is .762:1
1988 ASpec S4 TII 5ht dear is .711:1
All ASpec S5 TII 5th gear is .719:1
Except for Infini IV's, all JSpec (Infini 2 & 3) S4 & S5 TII 5th gear is .806
Infini IV's 5th gear is .72 (.719?):1 with a 4.30 third member ratio
Now, a simple search and the very valuable information is there for all.
Thanks to all for their help and input.
1988 ASpec S4 TII 5ht dear is .711:1
All ASpec S5 TII 5th gear is .719:1
Except for Infini IV's, all JSpec (Infini 2 & 3) S4 & S5 TII 5th gear is .806
Infini IV's 5th gear is .72 (.719?):1 with a 4.30 third member ratio
Now, a simple search and the very valuable information is there for all.
Thanks to all for their help and input.
08-22-09, 11:29 AM
#17
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Based on my 1997 Competition Parts Catalog for transmission and 5th gear info.
the 0.711 was used on the 1986 non turbo in the (Smooth Case '79 to '91 RX7's gear box)
The 1987 to 1991 TII's share the same transmission as our TT's (2nd gen Rib case) but used
0.762 on 87-88 and
0.719 on 89-91
US 3rd TT's used 0.719's , JDM's used 0.762 and 0.806 depending on year and model
Based on my 1997 Competition Parts Catalog for transmission and 5th gear info.
the 0.711 was used on the 1986 non turbo in the (Smooth Case '79 to '91 RX7's gear box)
The 1987 to 1991 TII's share the same transmission as our TT's (2nd gen Rib case) but used
0.762 on 87-88 and
0.719 on 89-91
US 3rd TT's used 0.719's , JDM's used 0.762 and 0.806 depending on year and model
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