Gtr Driveline Strenght

[Scribble]

R32 GTS4's are turbo 5 stud and im guessing that Warpspeed was referin to the R33 GTS4 which is non turbo and therefore a 4 stud pattern?

[Ginkgo Biloba]

what are you on about scribble?! whats the relevance of stud patterns here!?

[sky30]

We are running 32 gts4 diffs in the race cars and they are fine, even with 30 launches in a row at targa.

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How much power?

What gearbox, and how is it handling the launches?

[sky30]

Sky30,  I have not personally compared the two gearboxes side by side fully dismantled, but know someone that has.  There is one bearing with a different Nissan part number, not sure which, but both bearings are physically interchangeable and probably make no real practical difference. It is the sort of production change that car makers sometimes make during a production run.

The 4WD gearboxes are essentially otherwise identical in all respects, and used in both GTR and GTS-4. Gears, casing, shafts, selectors, seals, transfer case, everything are absolutely identical.

Diffs are the same too. R160 in the front and R200 in the rear all are 4.11 ratio except the R32 which has 4.32 diffs.  The rear LSD can be viscous, multi-plate, or electronic, depending on what was ordered.  Some GTS-4s even have the electronic diff usually only seen in the V spec GTR, though that is extremely rare.

The R34 GTR with the six speed Getrag has different gear ratios and diff ratios again, (3.54, I think ?). The front diff is an R180.

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I was also tols the GTS4 transfer case has less clutch packs than a GTR?

[Scribble]

GTS-4 and GTR gearboxes are identical, except that the R32 GTS-4's (with the RB20DET) used different ratios. The R33 boxes and diffs are identical ratios.

But driveline strength also must include the clutch and half shafts. The GTS-4 is considerably less than the GTR in both clutch capacity and rear half shaft diameter. It also uses four stud wheels.

If you get an R33 GTS-4 and put a GTR clutch in it, and upgrade the wheel hubs and half shafts, it will be identical to a GTR in both strength and ratios.

But an R32 GTS-4 will have different ratios, but could be made just as strong with the same clutch and driveshaft changes.

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Ginkgo Biloba i was replying to this post.

[Duncan]

Targa spec GTRs put out around 250rwkw, so not big power. But 30 6000rpm launches in 6 days as well as a season of 8000rpm race launches are a pretty good test.

Standard diffs, standard gearbox. We regularly have to replace gearboxes with synchro problems but we've never broken anything inside. Never had any trouble with the diffs they are a pretty strong piece of gear.