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R33 Gtr Diff Gear Change

peter_fc
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Pezhead Grand Master

Pezhead

Posted
Posted

You have to be careful about changing the ratios. I believe a stock R33 GTR has 4.11 gears. I think that the GTS4 has 4.30.

My GTR ended up having rears at 4.30 and fronts at 4.11 - and that stuffed my transfer case real good. I had to change it out to get it back to stock. I had a shop do it. Rear would be relatively easy. But the front is a real bear since it is attached in the transfer case and oil pan.

Beer Baron Grand Master

Beer Baron

Posted
Posted

the only real viable option is r32 GTS4 gears. 32 GTS4 is actualy 4.375:1 and yes you need both front and rear crown wheel and pinions. they are a good upgrade from the GTR 4.111 gears. and they are not easy to find!

Beer Baron Grand Master

Beer Baron

Posted
Posted

ah, well if you want to go that way then R34 gears are the way to go. but to be honest most people want more acceleration/less top speed. going to 3.9s will give you more top speed but cost you acceleration. considering with the stock gearing you can get to 300km/h (which without decent power you'll never see on any aus track) then i'm not sure what you want to make it even higher still?

you may need to confirm though that the 34 crown wheels and pinion gears will work with your 33 diffs. i'm not sure as I've never heard of anyone actually wanting the 3.9 gears. unlesss you live neat the autobahn and want to play with some ferraris and lambos!

Raysboostin Mentor

Raysboostin

Posted
Posted
ah, well if you want to go that way then R34 gears are the way to go. but to be honest most people want more acceleration/less top speed. going to 3.9s will give you more top speed but cost you acceleration. considering with the stock gearing you can get to 300km/h (which without decent power you'll never see on any aus track) then i'm not sure what you want to make it even higher still?

you may need to confirm though that the 34 crown wheels and pinion gears will work with your 33 diffs. i'm not sure as I've never heard of anyone actually wanting the 3.9 gears. unlesss you live neat the autobahn and want to play with some ferraris and lambos!

i'm go out on limb here here and guess he's after highway economy. not everyone is after crazy acceleration. i've had the same idea

Marco-R34GTT Grand Master

Marco-R34GTT

Posted
Posted
you may need to confirm though that the 34 crown wheels and pinion gears will work with your 33 diffs. i'm not sure as I've never heard of anyone actually wanting the 3.9 gears. unlesss you live neat the autobahn and want to play with some ferraris and lambos!

I'm getting a 3.6 final drive put into my R34GTT, I do HEAPS of highway and freeway driving, so I can justify doing it... I'll find out how it goes when I pick it up tomorrow.. :blink:

Marco-R34GTT Grand Master

Marco-R34GTT

Posted
Posted

Hahaham I've been to a few different websites, and I've recovered a range of 'different' final drive readings:

3.55

3.545

3.369

3.27

3.266

I'd like to know, which bloody one is actually correct... :blink:

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