jaje

I did a search on testing whether a car has an LSD and found out that put the car in neutral and jack up the rear. Spin one wheel and if the other wheel spins the same direction the transmission should have an LSD. However when I put it gear and spin one wheel - the other wheel spins in the opposite direction. Does this have any bearing?

I will drop the tranny sometime over the weekend so I'll check for the stamp but I'm hoping I've got an LSD parts car.

krystar

other direction = open diff.

jaje

That is what I thought - but there seems to be a difference if the car is in gear or neutral.

StoogeMoe

NOOOOO!

That is correct. If you put it in gear, it will spin in the opposite direction. The test must be done in NEUTRAL. If they spin in the same direction in neutral, then you have an LSD.

86 951 Driver

Question does an LSD trans need some sort of modifier or not? Can you use regular tranmission oil in it?

drift a 944

Just to clarify...

In neutral only:
spins same direction = LSD
spins opposite direction = open diff.

jaje

SCORE!...Good engine (good compression #s) and now a good LSD tranny.

Did both '87 or '88 924S both have the short 5th gear or only the '88 models? Also does the '87 924S have the high compression engine (they did make changes mid year)?

M758

87 924S = Short 5th and 9.5:1 (low compression) pistons
88 924S = Short 5ht and 10.2:1 (high compression) pistons

Would you happen to have a spare 87 or 88 924S DME harness by chance?

James Chimney

ok so if I can spin both rear wheels in 1st, do I have a LSD or Open?

Strike-Force

You have to do it in neutral, in gear they will both spin the same direction no matter if you have LSD or Open Diff

krystar

lucky!

krystar

if u mean u can do a 2 wheel burnout, it doesn't mean anything. an open diff can do two wheel burnout...it's just uncommon.

86 951 Driver

Riddle me this. I have the rear end of the car up on jackstands right now.

To test if I have a LSD or not:

1. Put car in Neutral
2. Spin one wheel
3. If the other tire spins in the same direction then that means it has a LSD. If they spin opposite ways then you don't have a LSD.

While I'm in neutral and I spin one tire the other wheel doesn't spin. But when I put it in gear they spin opposite ways.

I would like to add that I tried something else. I jacked up just one wheel off the ground. So one rear wheel was on the ground and the other was in the air. In neutral I could spin the tire that was in the air no problem, but as soon as I put it in gear the wheel was not able to be turned like it would need both wheels to spin almost. So I think I may actually have a LSD.

What does that mean?

Nick_944

Mate mine does the exact same thing as yours.
And I can't work it out either.

Does anyone know if you can view the part# on the diff at all without taking it out?

alex

Try putting it under your tongue... if the room starts moving, thats positive for LSD. Sorry... I got nothin'