Infiniti J30 rear end differential?

[hobogunner]

I've been reading on these forums a lot for consulting about problems with my car. I have a 1993 Infiniti J30, and was wondering what it's differential was. I've heard 3.9 from other places, 4.XX at other places. Also, I just read another post that ended on an odd note to me, did the '93 Infiniti J30 have a VLSD like 94-97? Or is it a true positrac? I've near wrecked due to my rear end multiple times (the pouring down rain and loving to accelerate never mix well), that leads me to believe it is a positrac, but I don't know for certain. So, my questions are: Does a 93 infiniti J30 have a positrac? If so, does it have a different ratio than a stock VLSD they put on the rest? If not, then what is it's rear end differential?

[yodawill2000]

Welcome to NICO !!!!

As far as I know all J's have the VLSD diff but in reality its alot like a posi rear end.
If the drive wheel spins it immediately locks up.

Not sure on the ratio thing but I'm sure someone will chime in with the specs.

[steverinaz]

Yoda-

Mine doesn't have it. Last winter proved that to me!!!

[swimshark]

your differential could have given out. mine used to spin both wheels when i do a burnout but now it only spins one.

[yodawill2000]

Yoda-

Mine doesn't have it. Last winter proved that to me!!!

Sounds like the Viscous clutch is burnt out.

[Nealoc187]

It's an R200V

3.92 ratio, all of them have Viscous LSD. And yes Viscous Couplers do wear out.