R32 GTS vs GTS-T Diff

[Quaggy]

R32 GTS vs GTS-T Diff

Hi, im in dire need of answers here, iv recently bought a r32 gts (n/a) chassi with a uprated kaaz diff in it, i was wondering if this would fit in a GTS-T (turbo version)?

the backplate does look a bit different when i compair the 2, but i havent gotten a chance to dig deeper into it since the 2 diffs are still in the cars.

[GTSBoy]

There's absolutely no way to answer your question.  That car is at least 23 years old and could have had any number of different diffs, diff housings and even rear subframes in it.

Come back with some more complete descriptions and/or some photos.  The reasons for this are;

GTS original;

• Open R200 diff, in same housing as any other R32 (including GTSt).
• 6 bolt driveshafts (3x2, same as S chassis cars)

I was going to say that the NA cars have a Non-HICAS rear subframe (which might explain why things look different at the location of the diff).  But to be 100% honest, as I give no fark for the NA cars, I simply can't remember whether they even have HICAS or not.  If they do, it's just one more reason not to buy one!
 

GTSt original;

• VLSD (viscous) R200.  Same housing.
• 5 bolt driveshafts
• HICAS rear subframe, meaning that you have a HICAS steering rack or possibly a HICAS delete bar running across the back of the diff.

 

My R32 GTSt however, has an R32 diff housing with S15 helical diff internals.  Therefore it has 3x2 bolt S15 stub axles and matching 3x2 driveshafts.  I threw the entire HICAS rear subframe into the scrap metal bin and replaced it with a non-HICAS one from a Cefiro.  Therefore my car matches none of the above lists.

 

As to your KAAZ diff.....if it is a KAAZ LSD then it almost certainly was intended for a turbo, as no-one would bother putting one behind an NA.  Check the driveshafts, take teh photos, get back to us.

[Quaggy]

Thank you for your kind reply GTSboy, the reason i bought the GTS is because it has alot of aftermarket parts (apexi N1 coilovers, steering angle kit, Work, SSR rims, granador mirrors.. you name it) for a cheap price, But back on topic.  

My GTS-T has a stock R200 VLSD wich is starting to go bad, 5 bolt driveshafts as you said. Looking at the GTS it has 3x2 bolt pattern, will take some pictures tomorrow.

[GTSBoy]

OK.

I have written many words on the interchangeability (or not!) of diffs across all these cars.  Whilst the R200 is a fairly consistent thing, there are a bunch of annoying details.  The 5 bolt stub axles in your turbo VLSD, have different spline lengths to other more normal diffs.  The open diff in the NAs has different lengths splines (I think, not 100% sure, because again I give no fark).  The aftermarket centres to replace the VLSD are usually made to accept the (unusual) spline lengths from the VLSD.  Where these manufacturers also make an LSD to go into an (originally) NA diff, they might not be the same.

Your KAAZ diff has the 3x2 bolt axles -- this could mean either that the diff is properly to suit an R32 NA....or it could mean that it was intended to go into an S13.  The S13 option is 99.99% more likely.  If I was wanting to put such a diff into an NA R32, I would go look for a complete one from an S13 because it would be the same housing and accept the same driveshafts.  The only hassle with taking diffs from completely different donor cars is that the crownwheel and pinion gearing might not be right for you.  But swapping those over is also done a lot under these circumstances.

[Quaggy]

These 2 are from my GTS-T

[Quaggy]

And these are from the GTS

[GTSBoy]

Has the GTS one got 2 or 4 bolts connecting the rear cover to the subframe?  You need to get further under and look up to see.

The GTS's subframe is non-HICAS, which is why you can't see a steering rack running across the back.

[Quaggy]

Will check tomorrow morning !

Yeah i knew it had no hicas

[Quaggy]

It has 4

[WMDC35]

Swap the rear cover if different & use the 3x2 axles

[GTSBoy]

Ah.  I was about to say that the 4 bolt rear mount is the correct one for R32.  So that at least means that the car hasn't received an S14 or R33 subframe swap.  And of course the wrecker's paint pen tells us that it's R32.

Anyway, the turbo rear cover from your driveable car will go straight on, as WMDC35 above said, offers slightly more capacity and cooling.

Mental note.  The nuts holding that diff to the subframe are all wrong.  They shouldn't be dome nuts, and the nyloc replacing the missing one isn't suitable either.  Hopefully the ones on your driveable car are correct.

[Quaggy]

Cheers for the reply guys. Yeah i laughed a bit when i went under to take the picture about that nut . The nuts on my driveable car are all stock, diffs never been touched.

So its that simple? I just take it out and use the 3x2 driveshafts with the GTS-T backplate and im set? (yeah sounds easier than it is )
The 3x2 driveshafts/axels do bolt up with the turbo hubs? Should be identical from what i can see visually
 

[WMDC35]

Hub spline is the same

[Quaggy]

Cheers mate !