Alex3000 Posted April 26, 2017 Report Share Posted April 26, 2017 My car is an 84 rx-7 (First Gen) Long story short, I had to replace pinion bearings and decided to rebuild the LSD while I had the thing apart. The rx7 has 4 friction plates on each each axle side so 8 in total. without getting into it too much the stock spec is between 1.90mm and 2.00mm. All my discs were between 1.97 and 1.98. So for argument sake lets say my entire clutch pack was about .18mm below top spec for stock. I made two shims from .254mm shim stock and stuck one on either end, after the cone washer. So now my diff is (0.254x2 - .18) .328mm over stock spec. To me this seemed like an almost trivial amount, but when I installed the diff this weekend and drove the car around the block when I did tight turns the car lurched and skidded from the rear being locked. It seemed to get a little better after a few laps around the cul de sac but I did the old one tire in the air thing and tried to turn a lug nut with my breaker bar and it didn't turn the wheel (I didn't crank it down too hard as I didn't want to overtighten the lug) So my question is for anyone with experience: Could .33mm over stock be enough to send a diff into locked up territory? I am driving at Dominion this weekend to shake down my most recent car re-assembly and am a bit nervous about the diff. My hope is that it just needs a bit of break in after the rebuild and perhaps the breakaway will manifest itself better on a racetrack than going 25 mph around my neighborhood... Quote Link to comment Share on other sites More sharing options...
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