im doing the auto to 5-sp swap and today when i was taking my driveshaft out i turned one wheel and the other turned the opposite direction? i thought my 87 gxl was a lsd ?

 

It is or thats what is says on the Faq.

 

the clutch pack is worn out in the LSD. buy a rebuild kit and spend a weekend doing that. Although they do grip better than the s5 LSD's, they also wear out faster.

 

its a LIMITED slip, not a no slip. the clutch on a lsd aonly engages when one wheel is spinning faster then the other, then the clutch grabs. with you just spinning it by hand there wont be enough friction to get the slip clutch to kick in

 

That would be a viscous setup.

 

Get someone to try to turn the other tire the same direction, if it moves, that means your lsd is shot... At least thats what I was told. The S4 LSD dont last as long as the S5 ones, but they still last for 150-200k depending on the way you drive.

 

I've heard they usually wear out at around 80K (WARNING: HERSAY; No experience with this personally)

I guess it has a LOT to do with driveing :O

 

Yes, it has a LOT to do with driving. Generally for most 'standard' driving styles, they last about 120k or so, for those spirited autocrossers/etc, it's quite a bit less.