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Drivetrain Rumble/vibration?


wolk625

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Since I've gotten the '41 fully streetable, I've noticed that while rolling at a pretty good pace and under throttle/load, there's a pretty intense/loud vibration sometimes, but when I let off throttle and coast it goes away. Is this most likely bad u-joints on the driveshaft, or should I be looking elsewhere?

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Motor mounts in good shape??

 

DJ

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Check the drive shaft to housing ends for looseness in/out of the car. Possibly worn ball and Trunnion's. Common issue.

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All of the above.   you can also take the cover off the rear joint and insert a washer under the center pin which holds the spring.

Put the cover back on and reassemble.  This has the effect of causing the rollers to operate in a less worn area.

 

The real fix is , of course to rebuild the joints which is a bit of a challenge and can be expensive.

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