Quote:
Originally Posted by fdanielson
If the problem changes when turning right or left your rear subframe bushings cold be shot and letting the whole thing shift a bit. Just a thought.
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I agree - I wouldn't make the assumption that the prop shaft needs to be shipped off to the balancing folks just yet.
Work has been done on the rear suspension by the sounds of it - the rear sub frame mount has been replaced.
It is important to make sure that the crankshaft engine height + transmission output shaft height + prop shaft centre mount + differential input flange are all on one straight (hopefully horizontal) line. Whilst the W123 drive train has a universal joint (UJ) in the prop shaft it isn't meant to be something that is actually used as much as a "conventional" / old fashioned two UJ plus splined shaft set up with a live axle. {This has been mentioned earlier in the thread by Larry - but I think it is worth stressing this point}