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Driveshaft vibration after all new components except the shaft... 700 1990

Ho Ho Ho … so it was bent! I didn’t suspect less.

Bent … That’s not so good. Balance is one thing that is crucial but truenesses is another nice objective.

This could mean the universal joint faces or axles are not running true in each of their vertical planes @ 90 degrees. Any wobble will be lateral and not so much of a concern to a balancer person.
It will only cause extra strain on their needle bearings, especially. if it was mounted between to ridged machine units then other issues pop up.
Since everything is rubber mounted under there, as in the whole drive train is, it should be OK.

So while it’s Not exactly pristine condition I would say its minor thing and overall it explains the massive numbers of weights you found.
You are gonna have to trust their experience that they found the “sweet spot” to place that weight in only one place but it sounds a lot better.
Trust me, it took a little studying on their part to move group combinations around a little bit up and down a bent shaft.

I have heard of this happening if a driveshaft loses a U-joint or a center support and allows the drive shaft to drop down and beat the road up. People in the car never forget that sound!

The next thing is getting rear ended or running off a road and getting high sided.

Do you know of any history on the car of that happening?
Or did you lend the car out to a mute that wasn’t one in the beginning? (:-)
(:-) I don’t trust mimes either, as body language, is not my strongest people skill either. (:-)

I Hope the cold snap does not freeze the tires to the road!
New Tires are not exactly a Christmas present IMO.

Thanks for the update.
Happy holiday!

Phil






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