jammer-

I replaced the two motor mounts first and the grinding was still there.

Pulled the trans. mount out and it was petrified- hard as a rock. Problem solved.

Might want to check your flex disc for play while you are under there. And a tranny service too, if you want to make an afternoon out of it.

Good luck,
Mike

__________________
'90 300SE 298k
-300K and it gets put into retirement.
'80 300D 255k Purchased new by family in 1980.

Had a:
1973 220 (gas)
1980 300SD
1992 400E