[Whatawookie]

TT models are R230's. They are bigger and stronger, but the R200's, which you already have, are plenty strong for most setups. The R230 is not a direct swap, and it has a considerably taller final drive. The NA Z32 uses an R200. It's not a direct swap, and if you already have the LSD, you are gaining nothing.

The 280ZX did not come with a limited-slip from the factory. I just looked through the factory service manual to make sure, and all its differentials are open 2-pinion varieties. It also has a completely different housing and output shafts than the later cars. The first Z with LSD of any sort was the '87 300ZX turbo, which had the clutch LSD. They later (unfortunately) switched to the VLSD, although some more recent models got a helical LSD, like the S15.

 

[Whatawookie]

TT models are R230's. They are bigger and stronger, but the R200's, which you already have, are plenty strong for most setups. The R230 is not a direct swap, and it has a considerably taller final drive. The NA Z32 uses an R200. It's not a direct swap, and if you already have the LSD, you are gaining nothing.

The 280ZX did not come with a limited-slip from the factory. I just looked through the factory service manual to make sure, and all its differentials are open 2-pinion varieties. It also has a completely different housing and output shafts than the later cars. The first Z with LSD of any sort was the '87 300ZX turbo, which had the clutch LSD. They later (unfortunately) switched to the VLSD, although some more recent models got a helical LSD, like the S15.

you are wrong sir...i know about 280zx's.....

http://www.geocities.com/jasonparuta/diffswap.html

No. I'm not wrong. The link you posted shows how to swap the 280ZX differential into the older Z, which is possible, and the gear ratio you listed is indeed correct. Nowhere did I say you were wrong about that. However, the housing is very different from the later R200's (newer ones have a much shorter nose, different mounts, and different outputs), and the differential pictured is a conventional 2-pinion open unit (non-LSD). It would be possible to swap some of the internals, but there's no reason to use it on the newer cars. The 240SX and NA Z32 already have a 4.08 ratio.