USDM 4th hear into JDM tranny -- worth it?
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USDM 4th gear into JDM tranny -- worth it?
I have a 2000 JDM ITR tranny. Specs are as follows:
1st-3.230
2nd-2.105
3rd-1.458
4th-1.034
5th-0.787
FD- 4.785
This tranny uses a longer 4th and 5th gear (GSR ones) because of the higher final drive. The USDM ITR tranny uses a 1.107 4th gear.
My car is used for street driving, with 4-5 road course events per season and 1-2 trips to the drag strip. My local road course is Gingerman in South Haven, MI.
Anyone have experience with this mod? Is it worth it?
1st-3.230
2nd-2.105
3rd-1.458
4th-1.034
5th-0.787
FD- 4.785
This tranny uses a longer 4th and 5th gear (GSR ones) because of the higher final drive. The USDM ITR tranny uses a 1.107 4th gear.
My car is used for street driving, with 4-5 road course events per season and 1-2 trips to the drag strip. My local road course is Gingerman in South Haven, MI.
Anyone have experience with this mod? Is it worth it?
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From: medium pimpin
Re: USDM 4th gear into JDM tranny -- worth it? (red civic standard)
Luke, i'm going to try it. i was going to try the ls 5th, too, since i plan on a high rev limit, and will only use 5th for hwy, but now that i have a beater, i might only puss-out so far as to keep the gsr 5th 
if i ever get my project done, running well, and don't blow it up before then, you can see it @ ef-h day @ g-man.
if i ever get my project done, running well, and don't blow it up before then, you can see it @ ef-h day @ g-man.
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From: USA
Re: USDM 4th gear into JDM tranny -- worth it? (slofu)
I had an 90-93 LS 5th gear in a cable b16 tranny and it was really nice on the freeway.
I think that the GSR 5th will be fine on the highway, even with the 4.78 FD. Cruise at about 4400@80 mph.
Anyone else?
I think that the GSR 5th will be fine on the highway, even with the 4.78 FD. Cruise at about 4400@80 mph.
Anyone else?
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From: RIP Craig Jones
Re: USDM 4th gear into JDM tranny -- worth it? (red civic standard)
I will hit 5th gear @ VIR (twice on full course) and Summit point.... I would not want to drop that ratio further for track use that has a long straight.
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From: RIP Craig Jones
Re: USDM 4th gear into JDM tranny -- worth it? (red civic standard)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by red civic standard »</TD></TR><TR><TD CLASS="quote">This USDM 4th gear could take me to about 113 mph.</TD></TR></TABLE>
With a JDM final drive?
I'm right @ 120 when i go to 5th.
With a JDM final drive?
I'm right @ 120 when i go to 5th.
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From: RIP Craig Jones
Re: USDM 4th gear into JDM tranny -- worth it? (red civic standard)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by red civic standard »</TD></TR><TR><TD CLASS="quote">111 mph at 8500 rpm with USDM 4th gear.
I am riding on 195/60/14. You probably have taller tires.</TD></TR></TABLE>
205/50/15's here.
I am riding on 195/60/14. You probably have taller tires.</TD></TR></TABLE>
205/50/15's here.
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