Has anyone used cam bolts or adjustable length control arms to raise the rear pinion angle? It should not have been with the factory rear driveshaft still installed.
Adjusting the pinion angle should not be done with just a 2" lift.
Actually no, since with the stock rear driveshaft you have to keep the pinion angle as the factory set it. The rear pinion angle must remain parallel with the tcase output shaft with the factory driveshaft.
drop the tcase as recommended.
That is just from this post
You aren't losing lift height, you are decreasing your break over angle and screwing up your ground clearance which has the same effect as losing lift height but they are not the same thing.
I know that also, but depending on the situation one might be more important that the other. For example where we take our Jeeps, break over angle is really not much of a concern but ground clearance it since we are in rutted out trails most of the time, no fly shit there.
The rear drive shaft and the front one for that matter should not be rotated past any angle that induces vibrations.
Now you just answered the question, you can rotate the rear drive shaft if needed as a way to correct drive shaft angle problems, hence vibration problems.
So is there problems with rotating the pinion to bring the angles in spec so there is no vibration if say a 4" lift is installed and someone still has the stock drive shaft on a TJ?
As a side note, when we installed a 6"" lift on my 88 Bronco, 15 years and ~ 150,000 miles ago, we rotated the pinion to bring the drive line angles back to factory specifications. No ill side affects, but that is a Bronco with a DC and slip yoke, and it is still going just fine.
That is why I am asking, (still no fly shit), folks here with more experience on TJ's that I.
What I am getting is that rotating the pinion using cam kits on the uppers might lead to problems down the road so not recommended due to past experience.
Rotating the pinion using adjustable arms is one way to bring the drive line back to specification so that there are no vibrations.
Lowering the transfer case is another way to bring the drive line back to specifications so that there are no vibrations, AND it is a budget friendly way to do it.