E30 Zone

Got the chance to get my car on my mates ramp today, is this an LSD or a normal diff, how can you tell? Looks rather small! #

Look for a big "S" on it or an S on the diff tag (a serial number).

I was always under the impression that if you rotated one rear wheel by hand, and the other wheel on the same axle rotated in the same same direction, it was an lsd. Thats what mine does, anyway. Im sure someone else will correct me if Im wrong

e30shed wrote:I was always under the impression that if you rotated one rear wheel by hand, and the other wheel on the same axle rotated in the same same direction, it was an lsd. Thats what mine does, anyway. Im sure someone else will correct me if Im wrong

That is correct, for clutch pack LSD's as fitted to E30's

it will be a 4.10 open.

look for a tag on the back plate,undo the bolt it's held on by clean it it up and hope it starts with an 'S'.

Normally you don't need to put an e30 on a ramp to see if it's got an LSD or not.

Does the inner wheel spin up if your a bit enthusiastic leaving a junction?

didn't get the chance to see any tags etc, the back end likes to come out, previous owner said it was an LSD but I wanted to make sure. When i turned one wheel on the ramp the other one didn't move.

its an open if the other doesn't move.

oldroydsr4 wrote:its an open if the other doesn't move.

+1

Another test is to get one wheel on a loose surface like gravel or grass and the other wheel on the tarmac then pull off sharpish.
If you go nowhere with the loose surface wheel spinning its an open, if you fly forward its a slipper.

will try that, thanks

Was defiantly an open diff and your right the back end did like to come out, even with an open diff better now i've put an LSD in it

You've got my old car???

If its open just weld it!