does anybody know the difference between the lsd inthe jcw package and the quaife,is one better than the other?

 

the Quaife is indeed better, but you'll pay a premium for it vs. teh bargain cost of the OEM one.

 

What kind of LSD is the OEM one in an '06 Cooper S?
...just curious. :-)

-Andy

 

http://www.gkndriveline.com/drivelin...super-lsd.html

as far as I know...

 

OEM is like dirty tabs...

Quaife is like clean blotter...

Ohh the flashbacks..

I do know the OEM is a 25% lock and if you buy a new rebuild 05-06 transmission it's no extra cost to get one with LSD. Not sure what the Quaife offers over the OEM. I have a quaife, never have driven an OEM one on the track so I really can't compare.

 

Quaife is better but more expensive and you pay the labor to install it.
About $600-1200 labor and you can also install lighter flywheel and racing clutch while you are at it for the same labor. Those parts do cost more though. Light clutch would be noisy and less friendly and smooth for daily street driving, good for track. Lifetime warranty on the Quaife ($1200).

Factory LSD is OK for $500 cost and is covered under warranty and considered stock for autocross. A good safety and performance option.

There are many threads on this subject-
search for factory LSD
see
https://www.northamericanmotoring.co...d.php?t=126666
https://www.northamericanmotoring.co...d.php?t=129952
see Quaife for R56
https://www.northamericanmotoring.co...d.php?t=126812

Info on various differentials-
http://www.grmotorsports.com/backiss...-equations.php
Quaife is helical gear torque-sensing differential.

Factory LSD is from GKN
http://www.gkndriveline.com/drivelin...super-lsd.html