Last fall I was redid the entire rear end including
both flex discs. The U joint was notchy. I tried buying a whole
"new" drive shaft from Portland driveline which turned out to
be a disaster
vibration dampener necessary?
A new one from Beyer was going to run almost $600
I ended up doing it myself using Diesel 911's thread found in post #8 above.
I got the old u-joint out and had a fabrication shop press in the new one
to the specs buried somewhere in Diesel911's thread.
They got it to within 3/1000 the of the centering spec.
Centering the ujoint precisely is important.
The ujoint is a GMB 220-7284
Part # 900 410 00 31 at a certain AZ parts place.
Hardly any shops have the 20K machine to stake in the u-joint and the
fabrication shop just welded in some washers to hold it all in place.
I have put about 6K on the drive shaft since and there is no vibration.
I inspected it a month after I put it in and all was good.
I plan to get under there and reinspect the center support and welds to make sure
all is well before a road trip next month.
Going down to Big Sur to photograph & go camping with a bunch of friends:-)
Jeff