So, picked up a 60k mile 3.15 LSD from a March 1998 build Z3 2.8 this morning and couldn't wait to pry the thing open on the drive home ...
Got home and opened it up to find ...
... it's a Clutch Pack and not the Torsen that I was looking for. Thought I was pushing it with a 1998 Z3 as I had read either 1) that all 6-cylinder Z3s had a Torsen or 2) that they began in 1999. Should've done my homework. Gambled and lost. Sigh. Part of me wants to just keep the diff and move on with my life but I was really looking for a Torsen and I don't want to swap diffs again down the road.
It's also worrying me that I can easily spin the flanges in opposite directions by hand ... does that mean i need to rebuild or will it not lock up if it's drained / not on the car?
Any help appreciated.
Bought 3.15 LSD but ... 
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