Jack the back of the car up and have someone spin the wheels to turn the
drive shaft. Looking from the side you should be able to see if your
driveshaft is wobbling/bent. That's how I discovered my bent driveshaft.
Your U joints shouldn't have any play in them. Do you hear clunking when you
shift? They might need replacement.
Chris Reichle
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From: mgs-owner
To: 'MGs'
Subject: Rear Vibration
Date: Monday,September 09,1996 9:39AM
I need the expertise of this group.
I have an 80 B (named AWGEE) that has a significant vibration in the rear
end when I exceed 55 mph. It feels exactly like one or both tires are out
of balance or out of round. I began my pursuit with balancing the rears.
Then I checked them for true and they weren't. I replaced both rear wire
wheels and bought new tires. All are now balanced and true and still there
is the same characteristic wobble vibration over 55mph. I hate it!!!
I'm running out of ideas. I replaced the rear seal on one side a year or so
ago and I can't think this would cause the vibration. Rear brakes and drums
are fine. There is some slop in the drive shaft. I have not done U joints
or had it balanced.
Any ideas?
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