3 replies to this topic

[Tim]

I just had my 1994 SM's dif upgraded to a used 99T diff. On hard right turns there is a whining or whirring sound in the back left, any ideas if this is a normal torsian diff sound or not? I had a an old 93 diff.

[Tom Hampton]

I'm no expert, my car still has an open diff. But, neither of the torsen diff's I've driven made any kind of sound like that. So, no...I don't think that it is normal.

[Bruce Wilson]

Axles rubbing the exhaust under g loading? Look for the tell tale signs on the exhaust and then adjust accordingly. There's not much clearance down there.

-bw

[Qik Nip]

I just had my 1994 SM's dif upgraded to a used 99T diff. On hard right turns there is a whining or whirring sound in the back left, any ideas if this is a normal torsian diff sound or not? I had a an old 93 diff.

I'd be looking hard at the axle bearings. As a independant rear suspension set up, there shouldn't be any side load trasferred to the diff in turns. All that side G load is absorbed by the bearings. They can make noise if they aren't happy.
Rick