Drive shaft vibration?

[rubicon5]

hey, Brought it in to work, measured for runout at the t-case out put flange.
I only have 3 thou runout. Not enough to cause my vibes i dont think.
   Tracking? :roll:

[Bnine]

3 thou is good.

Yeah, tracking or or a couple degrees to much on the CV. I would try some washer under the skid bolts. No more then about 1/4-1/2 inch.

If that works, then a MML will be enough to solve your vibes.

Just another free check before you buy parts. The little bit of offset should be tolerable.

[rubicon5]

Tried 1/2" t-case drop, and still no better, its very strange, ever since the t-case out put shaft flange was seated properly, i have a vibe at any speeds under load on decel or accel.  more apparant on accel, but if i hold the throttle right in between, So that there is no load on the shaft, its smooth as silk. Pinion angle has been changed from one extreme to the next with all positions in between. It doesnt make any sence,  any thing else i should be lookin at? Could there be something wrong with that double-cardan joint?

[Bnine]

Im all out of ideas.

What is the total angle of the shaft. Maybe its just to much. I dont know.

Could be in the shaft, but doubtfull.

Check the yoke straps on the pinion.


Re torque all your rear suspension parts to ensure no loose bushings.