Help: High Speed Vibration

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06-27-2013, 11:44 AM

#11

moosestang

6th Gear Member

Join Date: Sep 2006

Location: Gainesville, FL

Posts: 11,278

Quote:

Originally Posted by SON OF 68

Pinion angle was ok. Here's what we found. The rear U-joint was tight, felt kind of binding in certain movements. Also, the front slide was not able to move at all. They found the shaft to be balanced good once those two issues were addressed. So we'll see, next time I get it up to higher speeds. But so far, it seems smoother even around 60ish. Could be all in my head, sometimes you think you notice things when you make a repair. LOL

Thanks once again guys for the input and the suggestions. Everything always helps!!

First thing I would have done is removed and reinstalled the driveshaft, but clocked 90 degrees. That's all it takes for my 1 piece shaft to cause a vibration. If it uses an adapter at the pinion flange, then that needs to be torqued to spec, not torqued with a impact gun, it also should be torqued in a star pattern like a wheel. Just my experiences with removing my drive shaft half a dozen times or a shop removing it and reinstalling it in a different position.