Ran mine for the 1st time today...
Diff is a nightmare seems sweet on the bench, but run it on a high grip track (carpet indoors) and it slips like a bugger. Had to tighten it up and it started to feel very tight on the bench, others had a similar problem.
I thought I'd run it, see if it would free up, the car ran for 2 mins then lost all drive.
The fault was the circlip in the diff, it had failed and popped out of it's retaining groove.
4 other people at the track had the exact same problem !
Luckily a guy who ran a Couger had anticipated the problem when building his diff, he noted the diff becoming stiff when tightening (as the circlip begins to fail) and he'd replaced his circlip with a Schumacher one.
I rebuilt my diff as did a mate with Schumacher clips and problem solved.
Diff ran ok, but still is nowhere near as free as say an AE diff ?
So beware, your clip could fail in your diff....
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