mark944turbo

Car is in neutral, I spin one of the wheels. I have LSD so the other one turns in the same direction. But if someone holds the other one while I turn, there is not a lot of resistance to my turning. LSD needs to be rebuilt?

Here is the real problem. Car in first gear, clutch not engaged. I turn either of the wheels, and the output shaft of the transmission doesnt even turn. It is pretty hard to turn the wheels at this point though, which makes me think I have been driving off of the friction created.

I did not know anything was wrong, I was trying to test my LSD when this happened.

What is broken?

TRWright

Mine is the same way, I am curious as to what that means. I did the same thing on my friends m3, and it is also possible to hold one wheel and spin the other, but there is quite a bit more resistance than on my car.

mark944turbo

Maybe somebody with a known good LSD can help.

special tool

I am putting an S2 LSD in this morning. Pm you my cell phone.

Mike1982

Doesn't the LSD really kick in under power more then just spinning the wheels??

mark944turbo

Bust, I didnt get your message until now special tool.

My main question is why can I spin the rear wheels pretty easily with the car in gear and the clutch not engaged. The engine is supposed to be connected to the wheels at this point, but I can spin them. And the output shaft does not rotate.

ehall

I can help you with your LSD issues.
1. get a better dealer
2. never do LSD with strangers.
3. the more that you do the more issues that you will have.

fortysixandtwo

Most lsd differentials use a cam to apply pressure to the clutch packs. You are feeling whatever the preload of the clutch packs is. When torque is applied to the ring gear, the caps (pressure plate) ride up the ramps of the cam and increase the pressure applied to the clutch packs. I am not 100% possitive that the ones in our cars work this way. I've rebuilt one made by Eaton that was configured in this like this.

herrtzeber

was playing with mine the other day and if i jack up the car on its side with it in gear and try to turn the opposite wheel and that thing wont budge