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Is there any way to tell if a removed 930 gearbox has a LSD fitted?

North930

North930

New member
Hi there folks,
I wonder if any of you gearbox 'gurus' out there can tell me how to tell if an unfitted 930 gearbox has an LSD fitted without disassembling it? Part number perhaps?
I have a spare 'box but as I've never run it in a car I don't know if it has a slipper fitted or not. I am going to offer it for sale but the presence, or lack ,of an LSD will obviously affect its saleability/price.
Any ideas guys/gals?
Thanks in advance for any info........................Chris

 
Reverse the car whilst on full lock - if it sounds like a bag of nails, you've got an LSD ....... or a very knackered gearbox which you should already have noticed!
 
Thanks guys: JBL930 - I'll get the number off it tonight and post it tomorrow.

John - Unfortunately it's never been in the car, it's from a job lot of turbo parts I got a while back, I have a slipper in the 'box that's presently fitted and that makes it's presence very obvious when on full lock at slow speed!!! I thought the box had self destructed the first time I felt the LSD 'grabbing' whilst turning tightly. The one in my old E39 M5 was a very subltle item in comparison.

Thanks again guys........Chris
 
If it is out of the car it should be easy. Turn one of the axels, if the other one turns in the opposite direction it is an open diff, if it turns in the same direction it is an LSD.
 
Yeah, I was just going to suggest jacking the car up and spinning the wheels...

I thought I heard somewhere that 930 limited-slip diff's also worked under deceleration (to try to prevent the car from 'changing ends' under braking)?
 
ORIGINAL: sawood12

If it is out of the car it should be easy. Turn one of the axels, if the other one turns in the opposite direction it is an open diff, if it turns in the same direction it is an LSD.
Click to expand...

+1
 
ORIGINAL: tj930

I thought I heard somewhere that 930 limited-slip diff's also worked under deceleration (to try to prevent the car from 'changing ends' under braking)?
Click to expand...

They do. They have different factors for power and overrun. With a trick diff you can also choose the tq factor.
 
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