how to check for a lsd

Post Sat Mar 04, 2006 11:43 am

hi, how do i tell wether or not my 325 has a lsd?
is it jack one side up put it in neutral and if it doesnt spin its got a lsd?
cheers
jazz

Post Sat Mar 04, 2006 11:46 am

Yep thats one way.
Or check th tag on th diff, number should start with "S".
Or get a spec sheet from BMW which will show if it left the factory with one, although this isn't garanteed I think it's unlikley somone would remove it and substitute an open diff.

Post Mon Apr 03, 2006 11:06 am

Another way is to jack the car up under the diff (both wheels off the ground) and rotate one wheel. If the other wheel rotates in the same direction you have an LSD, if it rotates the opposite way you have an open diff.

Post Mon Apr 03, 2006 2:59 pm

or just find a nice stretch of quiet road, dial in the revs and dump the clutch - 2 black lines = LSD

Post Mon Apr 03, 2006 5:19 pm

Jhonno wrote:or just find a nice stretch of quiet road, dial in the revs and dump the clutch - 2 black lines = LSD

Its possible to leave 2 black lines with an open diff so your way is fun but not accurate!

Post Mon Apr 03, 2006 7:54 pm

The way I understood it, was if it's an LSD you'll leave a nice pair of 11s and an open one leaves a pair of 33s!!!

Post Mon Apr 03, 2006 10:58 pm

Project_E30 wrote:
Jhonno wrote:or just find a nice stretch of quiet road, dial in the revs and dump the clutch - 2 black lines = LSD
Its possible to leave 2 black lines with an open diff so your way is fun but not accurate!

best of 5 then...