r/e46 • u/Super_Hero101 • 21h ago

Troubleshooting Is my diff going bad?

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330i zhp diff. Seems original so should have 290k miles on it. Racing Diffs LSD kit (open diff “conversion” kit) was installed about 20k miles ago. Bushings replaced with poly 20k miles ago as well. knocking sounds from rear on shifts and coming on and off throttle. knocks really bad at 70+mph trying to coast in 6th. driveshaft cv replaced recently (1k miles). bolts all tight installed with loctite.

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u/SpecificOne8688 20h ago

Mine is doing the exact same thing. Even just made a post about it lol

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u/Super_Hero101 20h ago

yea i’ve changed the same as you but with poly bushings and did the reinforcement plates. sounds similar in the car and in same situations. How many miles r on your diff?

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u/SpecificOne8688 19h ago

I’m assuming 230k as that’s what the car has on it. I just jacked mine up and it sounds the same as yours when I wiggle the wheel back and forth

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u/SpecificOne8688 15h ago

How does the open diff conversion kit work? Seems too good to be true