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R33 GTR diff into S14

Nismo32
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Nismo32

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Hi all

I was think of changing my S14 diff to a non V-spec R33 GTR diff. Similar to S15 i think but with shorter final drive.

Can any1 shed any light on wheather this is a straight swap or there is a lot of custom work need??? Any1 else done this??

What about non V-spec R34 GTR??

Cheers

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https://www.sau.com.au/forums/topic/56104-r33-gtr-diff-into-s14/
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Laurence Mentor

Laurence

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Posted

Well the R33 is a 4.111 which would be good, the R34 has a 3.545 so you probably wouldn't really want to use that. The non-V-Spec diff is pretty tight, only stock diff I have ever heard skipping the tyres when you are parking. Very noice.

In one of the early issues of Speed magazine there is a S14 with an R33 GT-R diff in it and they seemed to think it went in fairly easily.

ido09s Mentor

ido09s

Posted
Posted

We put a 32 GTR diff, driveshafts, hubs and brakes on a S14 cause we bought a rear cradle dirt cheap. Don't know how easy it would be without the driveshafts etc as the GTR items are quite chunky compared to the stock S14 items.

GTR-Ben Proficient

GTR-Ben

Posted
Posted
We put a 32 GTR diff, driveshafts, hubs and brakes on a S14 cause we bought a rear cradle dirt cheap. Don't know how easy it would be without the driveshafts etc as the GTR items are quite chunky compared to the stock S14 items.

Yes and then you need to use GTR rear suspension.. hassle

ido09s Mentor

ido09s

Posted
Posted
Yes and then you need to use GTR rear suspension.. hassle

not at all.... the car still uses the S14a rear cradle. Sure, it required 2 mounts be put on the cradle to suit the GTR diff, but apart form that it all bolted straight in :D

ido09s Mentor

ido09s

Posted
Posted

if your wanting to swap the entire diff over, housing and all, you will need the drive shafts and rear hubs as the spline on the GTR drive shaft is slightly different to that of the S14 hub..... you will also need to ad some mounting points from the GTR cradle to the S14 cradle.

GTRgeoff Grand Master

GTRgeoff

Posted
Posted

Just to add to this thread with Some R33 info. I spoke to a workshop that has tried and the R33GTR Diff will not fit the R33 GTS25t due to the tailshaft flange being different. It wasn't clear if the mountings for the diff were different but at the least a tailshaft mod would be required.

ido09s Mentor

ido09s

Posted
Posted

sorry mate, no pics as the car didnt make the hoist..... i did nelgect to mention that the tail shaft will definitely need to be modded as the GTR has a CV joint assembly as the rear universal joint, not a cross yolk like the GTST....

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