Rear driveshaft U-joint issues

89RuffyjRyder

New Member
Joined
May 6, 2022
Messages
3
Location
Rochester ny
I don't know what the issue is...I installed a SYE last fall with a new extendable driveshaft...after a few thousand miles and a few New Mexico mountain trails, the rear U-joint went. (Closest to the diff.)18 miles later my new one went...1,500 miles later that new one went !!! They were installed right, greased, proper torque...and yes, the right joint. Any ideas what the issue could be ? Locker ? New driveshaft is unbalanced ?
This is a 1989 YJ, 31" tires, body lift, 4" suspension lift and lockers and a tranny lowering kit. (1")
 
Figured it out. Damaged yoke...not sure if it happened this time or if it was already shot...but if you guys have any other thoughts, let me know.

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