change the center bearing
on the drive shaft, and at the same time the engine mounts as well as the transmission mounts.
I just changed the engine mounts on a 750, the new mounts are 2 mm higher than the old ones, and is too much. Even if you change the center bearing, the drive shaft is still not in the right straight position like it should be, if you do not change the transmission mounts and the engine monts at the same time.
Info on my website below, see under lots of DIY links>>> Johan & SeanShogun E32 Tech Tips: http://twrite.org/shogunnew/topmenu.html
Good start 2 change the center bearing BUT
Center support can also wear faster than normal due to bad U joints on the drive shaft. U joint bearings can get tight due to lack of lube after time on one axis, disturbing the natural balance. Overall shaft may feel "good" since its not sloppy. It's harder to detect binding unless it's removed. Ken Ken
74-Widebody Porsche 911S