pdurio

I just bought myself a 2012 2DR JK with a 6spd manual like the title states and came complete with a teraflex 4" lift with flex arms. I noticed that the jeep also has double carden driveshafts front and back. I have been going over everything making sure things are right and well maintained. The rear pinion angle was adjusted as per teraflex instructions parallel to the drive shaft angle. I come from a pretty good mechanical background and just don't see how this is correct.

I am not sure how much lift was actually achieved but I will measure when I get back from out of town. My big concerns is the reading I have been doing about front shaft failures and breakage of the transfer case. I don't plan to wheel it more than 4 or 5 times a year on 2-3 rated trails. I do want a nice driving and reliable performing jeep.

I can take more pictures of driveshaft angles once I am home thursday. I also have some time scheduled at a friends alignment shop to check caster soon.

nthinuf

When you get a chance, go to Tom Woods driveshaft website. There is a bunch of reading material in both the Jeep JK and the Tech Info areas, including diagrams showing the angles for a couple types of driveshaft joint.

Unfortunately, for the front, we have the trade-off between good caster and good pinion angles. Better pinion (less chance of vibes) automatically means lower caster (worse handling). Some options to research further would be swapping stock joints back on, some type of locking hub conversion, an aftermarket caster-corrected housing, chopping up the stock housing and rewelding with better angles.