Final Drive Ratio Help

[Lantana frs]

I wanna go 4.56 so I can leave like an automatic.

[phrosty]

Originally Posted by Greddy86

Currently have a jrsc w/ hbp on 6AT frs. I'm thinking about going Cusco 5.1 FD w/ Cusco RS 1.5 way. Hopefully this setup will help me get off the lines faster and quicker corner exit speeds.

I'd just warn you that freeway suffers considerably. With a 4.88, I had to adjust my cruise speeds to be 15mph lower to avoid noise and heat soak. But if you have the JRSC you've got an oil cooler, so heat soak probably isn't an issue.

[Greddy86]

Originally Posted by phrosty

I'd just warn you that freeway suffers considerably. With a 4.88, I had to adjust my cruise speeds to be 15mph lower to avoid noise and heat soak. But if you have the JRSC you've got an oil cooler, so heat soak probably isn't an issue.

My intentions aren't for fwy driving.... lol

I have a daily for the freeways...


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[kingkenny]

Originally Posted by Greddy86

Currently have a jrsc w/ hbp on 6AT frs. I'm thinking about going Cusco 5.1 FD w/ Cusco RS 1.5 way. Hopefully this setup will help me get off the lines faster and quicker corner exit speeds.

AT has a taller transmission ratio , and much less worry about the gear shift , may be it work .I think this would be some interesting experiment ... I actually think that I can never FI the car with the 5.1 FD setup , because too busy with gear shift and traction issue .


I suggest you consider to spend a bit more get a 2nd used diff. for these , just in case if it too aggressive and you can sell off the diff. .


Please update if this is really happen .

[fika84]

Originally Posted by TRAKRAVN

The diff makes a lot of noise when it's cold under low speed and tight turns. More so when releasing. I've only had the diff on the car for about 2000km. It's mostly just for track use and driving to and from the track. Overall I wouldn't go back to a helical LSD for tracking. I also have the Whiteline diff and subframe bushings so the noise is transmitted to the chassis more so then without them.

Sounds about right. I've got the bushings (and lots of other bushings, including motor mounts) and even got the plates WPC treated before installing them. I've got the diff set to minimal preload and lock capacity as well! The thing is a monster in the corners though which makes all the train noises totally worth it!

I think if I was to do it again, I would save up for the OS Giken.

[Greddy86]

Originally Posted by kingkenny

Please update if this is really happen .

Will do.