How to tell if the dif is buggered?

[hammy105]

basically having a few issues with my car, the lower bolt on the boomerang that bolts to the gearbox snapped, whihc resulted me to snapping a drive shaft in the process.

mended it all and went to pull out my drive on full lock to the right and the passanger side drive shaft broke again(same sade as before), just wondering if it could be the dif, or is it more likely to be engine mount? if so how i can i test the dif?

[Stevo123]

I am no transmission expert btw but what I would do is get the front end up in the air. Leave gearbox in neutral and start the car. Due to dragging effect of the oil in the gearbox both wheels should spin round.

If you stop one of the wheels from turning (use foot because there will be no real force behind it) then the other side should keep spinning round and will go faster than it did before.

Then turn engine off and rotate a wheel by hand - this should make the wheel on the opposite side turn in the other direction to the one youe are turning.

This is by no means a full test of the diff but it will at least check its basic action.

btw you might want to make sure you have fitted the mount back the right way round - I seem to remember a thread were a guy had put it on back to front and his engine sat wrong.