R33 Gtst Diff For R32 Gtst

[TTT]

I've got an RB25det in my R32 gtst

everything from the flywheel back is standard R32 GTST stuff.

I was wondering if I can use the R33 GTST diff to get the taller 4.1:1 ratio.

Can I just swap out the whole diff?

or do you need to swap out the internals?

does it require a change to tailshaft or drive shafts?

what is the easiest way to do this?

Thanks

[GTSBoy]

Housings are different - front mounts have bushes in R33, no bushes in R32. Rear cover is different. Tailshaft and driveshaft connections are same (normal Nissan 5 bolt).

ABS sensors can vary a lot. Either there, or not there.

I took the CW&P from an R34 diff, put it onto an S15 centre into R32 housing with S14 driveshafts (to match the 3x2 bolt S15 output shafts). These things are fairly interchangeable in the R200 stuff.

[TTT]

soooo not easy.. lol

[GTSBoy]

Oh, that's not to say that you can't do it semi-easy. The weak wristed way to do it would be to get the R33 housing, change the rear cover to the R32 type and fit it to the R32 using bushes in the front mount points. But the nice thing about the R32s is there are no bushes there, so.....take that as you will.

But you certainly won't swap it in without at least changing the rear cover.

The rest of my post was showing that you can mix'n'match to achieve pretty much any goal.

[jhjones]

gktech solid bushes.

[blind_elk]

After I put a RB25DET from a Stagea into my R32 GTS4, I found I needed different gearing. I simply had the CW & P from a Stagea rear diff transferred onto the centre of the GTS4 rear diff (not what I actually meant to ask for, but a better result all round).

(transferred the whole front diff assembly to keep matched ratios)

[ANT_32]

I done pretty much the same conversion but using an s14 diff. You need to use your old 4 bolt back cover and use r33 /s14 front mount bolts or buy longer bolts for the front mounts as the non bush types are an inch shorter. Other than that it's pretty simple just got to know if you need to get an abs one or not as GTSboy said

[fyjosh]

with the abs vs non abs situation, you should be able to swap over the component flange (pinion flange) between the diffs to suit your car.

as in, abs car installing a non abs diff, swap in your abs flange with the abs ring (with care taken to marking and torquing the flange and nut back to where it was previously to keep the same pinion preload) ?

you would need to fabricate a bracket for the abs sensor, and make some sort of dust cover for the pinion oil seal, but it sounds like it would work.

in fact I was hoping to do this myself in the coming weeks. can anybody confirm this?

ps sorry for the hijack

[GTSBoy]

It can be more complicated than you think. Some ABS diffs have 2 sensor rings, on the output shafts.

[fyjosh]

I was referring to the s13/14, r32/33 style diffs with the abs ring on the pinion shaft.