Rearend ratio ?'s

[elwesso]

well then maybe it was a 4.36 from a R34 rear diff...

[SuperHatch]

well then maybe it was a 4.36 from a R34 rear diff...

Like I said, R34 is taller than 4.11:1, not shorter.

[Chrispy300]

For you guys in the states you would be better off chucking in a aftermarket LSD centre rather than trying to source a GTR diff. I'm sure they wouldn't be cheap over there. There not even that cheap over here

Bit of a PITA trying to fit GTR diffs into the Z too. You need the NA subframe, TT halfshafts and hubs. Not sure what you do about the toe rods either. They may fit on the TT hubs.

[SuperHatch]

For you guys in the states you would be better off chucking in a aftermarket LSD centre rather than trying to source a GTR diff. I'm sure they wouldn't be cheap over there. There not even that cheap over here

The aftermarket LSD doesn't give you the stronger axles, and is much more costly than a GTR rear.

I paid $300 for a complete BNR32 rear subframe, this included the diff, halfshafts, hubs, everything needed for the bolt in conversion in my S14, which is why I bought it.

Bit of a PITA trying to fit GTR diffs into the Z too. You need the NA subframe, TT halfshafts and hubs. Not sure what you do about the toe rods either. They may fit on the TT hubs.

Most US Z's are NA, so there is no subframe compliance issues really.

I don't think anyone really knows what it takes to put a GTR rear in a Z32 NA. The GTR axles won't be long enough because the Z is wider. The TT axles won't necessarily work unless an R230 is the same width as an R200, which I'm pretty sure it isn't.

The tie-rods are a non-issue. The hub is a separate component than the knuckle. You just put the GTR/Z32TT hub on the NA knuckle and you're good to go.

[Chrispy300]

That's a pretty good price for the entire rear end...

You sure the hubs and knuckles are interchangeable? Why are there different bearings for the TT and NA hubs?

Most of the Z racers over here use the R32 GTS-4 diff due to the 4.3:1 ratio. But that's a 5 bolt R200. But that is circuit racing with TT VG's, no 'proper' drag cars as such.

Maybe just stick with the R230. There are a couple of LSD centers available, and Richmond make the 4.1 gears for it if required.

Ford 9"?

[SuperHatch]

That's a pretty good price for the entire rear end...

I thought it was quite reasonable. And I've seen others for similar prices.

You sure the hubs and knuckles are interchangeable? Why are there different bearings for the TT and NA hubs?

The knuckles are not interchangeable from NA to TT, the TT knuckles have the bushes that are designed to bolt to the HICAS tie rods, the NA knuckles do not. The HUBS are not interchangeable either, TT is a higher spline count than NA, but the TT hubs can be put on NA knuckles, allowing the larger spline count axles to be installed in a subframe without HICAS. Since the GTR rear is an R200, it can be bolted into the non-HICAS NA Z32 subframe as well. The last component is finding axles that are the right length.

Most of the Z racers over here use the R32 GTS-4 diff due to the 4.3:1 ratio. But that's a 5 bolt R200. But that is circuit racing with TT VG's, no 'proper' drag cars as such.

Maybe just stick with the R230. There are a couple of LSD centers available, and Richmond make the 4.1 gears for it if required.

I agree that a 4.11:1 Richmond gear setup with an aftermarket LSD in the TT R230 is the ultimate setup in strength, but again, it is much more expensive than a BNR32 GTR rear setup assuming I can find axles that bolt in.

Ford 9"?

Always an option

[Chrispy300]

Kewl, thanks for clearing that up

[John Dixon]

I'm assuming that I'm going to be able to use the TT driveshafts and make up some spacers to get bring the R200 output flanges to the same width as the R230 ones. Mainly because I have 3 sets of TT shafts alreay!

[SuperHatch]

I'm assuming that I'm going to be able to use the TT driveshafts and make up some spacers to get bring the R200 output flanges to the same width as the R230 ones. Mainly because I have 3 sets of TT shafts alreay!

I'm sure that would work as well, just measure the difference in width between the R230 and the R200, divide by two, and you have the thickness needed for your spacers. If it is less than 0.100" I would say they aren't needed at all.

The only other hurdle to cover is the GTR input flange, since it is TT style. TT Driveshaft may be necessary.

[John Dixon]

That's OK for me as my car was a TT to start with so I have all the TT bits already. I think that may need a spacer too if the R200 is shorter.Hopefully I'll get some measuring done this weekend.