JDM final drive on U.S. spec R.....best of both worlds???
10-31-2001, 12:45 PM
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JDM final drive on U.S. spec R.....best of both worlds???
I've been looking at the gear ratios of our cars in comparison to the 98 spec JDM Type-R. It seems that although the JDM 98 has a lower final drive it gearing is not ideal in 4th and 5th. 1st-3rd is shorter than ours due to the same ratio's with a lower final drive, but the JDM 98 has a higher 4th and 5th which hurts it in the topend acceleration. So what I've conclude is that our U.S. spec R's,equipped with the JDM final drive, will yeild the fastest accleration due to the U.S. 4th and 5th. I'm I right in this assumption or not? Any input would be appreciated.
10-31-2001, 12:47 PM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (ActiveAero)
Just go ahead and get the JDM FD...we all know thats where this post is going.
10-31-2001, 12:59 PM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (Type Goch)
First through third are the same.
U.S. JDM
1.107 to 1.034 4th
.848 to .787 5th
U.S. JDM
1.107 to 1.034 4th
.848 to .787 5th
10-31-2001, 01:00 PM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (Type Goch)
And why not run the GSR 5th, as it is taller (I believe) than the R's 5th, for less intense highway driving...who needs pulling power in 5th, really? Or for that matter, do you guys think we could replace our 5th with the S2000 6th gear? That would make for some killer gas mileage on the highways!
10-31-2001, 01:20 PM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (Yellow R #01-0468)
And why not run the GSR 5th, as it is taller (I believe) than the R's 5th, for less intense highway driving...who needs pulling power in 5th, really? Or for that matter, do you guys think we could replace our 5th with the S2000 6th gear? That would make for some killer gas mileage on the highways!
I vote for 4.9 fd tho...
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10-31-2001, 03:57 PM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (Black R)
Good point Black R, I'm thinking more along the lines of those who use their R's as daily drivers, not much into racing it on a track.
10-31-2001, 05:20 PM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (Yellow R #01-0468)
Isn't the JDM 98' ITR 4th and 5th the same as US gsr gears.......
swap em with the us, much more fun
--reid
swap em with the us, much more fun
--reid
10-31-2001, 05:32 PM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (Akira-R)
Yup JDM 98 Spec Tranny has the same 1,2,3 gears as the USDM but the 4,5 gears are the same as a GSR 
10-31-2001, 05:45 PM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (Yellow R #01-0468)
hey gennaro, thinking about the jdm fd, i want to do it too, w/ gsr 5th, but iv'e heard the install is expensive.
11-01-2001, 06:06 AM
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Re: JDM final drive on U.S. spec R.....best of both worlds??? (VADE-R)
Hey Will, yeah, our best bet is to go to a junkyard, salvage some tranny parts from wrecked GSR's. This is a project for down the road though, not enough $ to do this anytime soon unfortunately.
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