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Driveshaft radial play

eejay56

Jedi Warrior
Offline
I'm trying to trace the source of the clunking noise from the rear end of my Spit. Should the driveshaft have any radial play? By which I mean that I can twist it back and forth a good 1/2 inch without moving the axles and at the end of the play there is a clunking noise from the diff. Sounds a lot like the noise when I'm driving. This seems wrong to me.
 
Everything is relative to something else, so in this case, I would say that 1/2" of radial play in the driveshaft would not be a problem in a 30 year old car. I don't know your mileage, but there will be a certain amount of back lash in the ring and pinion on a new car, or the differential would seize up after about 3 miles of driving.

The key to finding this noise is whether or not the u-joints are clunking under load or if the mounts are loose (cracked), again, more noticeable under load with weight on ground.
 
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