Originally Posted by
idrummerboy13
just bought a whole new diff, rebuilt it 4 times and i feel the balls moving against the rings, i greased it a lot on each side of the rings and the main gear, it feels like the balls need to wear in?
Its not even gritty just catches each ball kinda.. Weird i usually built mint diffs which last a long time.
Sounds like you got a bad pair of thrust washers and/or diff rings. Clean them up and look at them in bright light you should see a fairly irregular surface... grainy almost. If they look normal... swap out thrust balls from a diff known to be smooth... and then diff balls known to be smooth, until you find the issue.
Both diff and thrust balls are said to be size matched... but over the years i have developed a stash of both that are in tubes and if i lose one (it does happen) i just snag a replacement from the tube and i have yet to notice an issue in doing that. So odds are its the rings makin it feel like crap...