Welding the diff for LSD?

[norteenick]

Hello,

Have just picked up an E36 325i for track use, i have heard rumour that the diff can be welded in a certain way to make it act like an LSD. Any ideas on which gears need welding together?

Cheers
Nick

[bigfatnick]

its not to much acting like an lsd, as acting like a locked diff... not great for carparks and normal driving. some people say they're not that bad for nomal driving but some people say theyre awful, making the car understeer etc.

great for drifting though!

[cptsideways]

Fine on track with the right set up - Those early 90's RS500 Cosworth Group-A cars with a spool diff worked just fine A spool is the same mechanically its just not done with a mig! it's a machined solid unit much like a go-kart.

If you go driftworks you'll find plenty of how to's in the forum section

This lot
http://www.youtube.com/watch?v=vlir7J_ycv0

Edited by cptsideways on Sunday 27th April 10:51

[R5GTTgaz]

http://cgi.ebay.co.uk/BMW-E36-LSD-DIFF-LIMITED-SLI...

[cptsideways]

R5GTTgaz said:

http://cgi.ebay.co.uk/BMW-E36-LSD-DIFF-LIMITED-SLI...

Pants compared to a mig spec for getting the power down

[Olf]

Get a set of old landrover freewheel hubs for when you take it on the road

[phelix]

The only prob with a Quaife (or torsen) diff is that if you use the kerbs agressively and get a drive wheel airborne the unweighted wheel will spin away until it comes back to earth with the resulting shock load going through the drive train. Other than that they're pretty good stuff and don't wear out or need adjustment

[mmm-five]

I thought the Quaife (torque biasing diff) put power to the wheel with most grip - i.e. if you hit a kerb and the wheel leaves the ground, then the wheel still on the ground will get the power?

[phelix]

anonymous said:

[redacted]

Yes, I should have made that clearer - unless you're a very aggressive track driver or racer the Quaife diff is fine. I've had one on my caterham for quite a few years and many track miles with no issue.

mmm-five said:

I thought the Quaife (torque biasing diff) put power to the wheel with most grip - i.e. if you hit a kerb and the wheel leaves the ground, then the wheel still on the ground will get the power?

It does, until one wheel has no grip at all and then it behaves like an open diff.

Edited by phelix on Monday 28th April 10:50