Originally Posted by alfa100
Thanks for your reply. Please explain why the clutch type diff is not suitable for fwd cars. Also, why do Autodelta use it then?
Because it produces steering wheel tugging and quirky behaviour when it locks, which is worse for FWD cars with McPherson struts (not a case with Alfas though). Several people claim that it is better for track use because it will never unlock itself if a wheel completely loses contact with the ground as a Torsen would. Maybe that's why Autodelta chose it for their 3.7 GTAm's but I think that it had more to do with copyrights from Torsen and Quaife and not being able to strike a good deal with either of them.
Originally Posted by alfa100
Does Q2 and the quaife work on the same principle?
Almost. The Q2 is a
Torsen 2 type diff while the Quaife appears to be similar to a
Torsen 2R, judging by what little detail is revealed in its photos.
Originally Posted by alfa100
Is it not better to go for the quaife one time?
Well, the Q2 hasn't proved its reliability yet, none of them has many miles, but in my opinion, if it is as reliable as the Quaife then it is the obvious choice because it is much cheaper.