Hello to all. 93 wrangler 4.0L 5spd black/gray 4" lift on 235/75/15 (33x12.50/15 are worn out). 97 engine with unknown year tranny and a 93 tcase. Soft top/no top. owned it since dec 2002 183,xxx MI.
yes i know how to use the search funtion...search nazi...if u exist here...
now that the intro is out of the way my issue. I keep breaking U-Joints, its not bad cuz i get them for free under warranty but its a hassle changing them out every week to 3 months. i got to looking at the whole setup today while i was changing the ujoint out in the cold and it looks as if the drive shaft comes straight out of the tcase then at the very end it angles to the rear diff, ill get a pic tomorrow. i believe the rear axle is shimmed but i could be wrong, my father installed the lift while i was deployed over seas. never had an issue with ujoints till the lift, except for my stupidity once...i learned my lesson, my $500 lesson. I should mention the driveshaft is a tom woods solid steel drive shaft with a u-bolt style rear yoke...which also looks worn. i dont expect much info for a solution on this subject as its 1A.M. and i have no pics..yet
if you never had problems before the lift then the lift is most likely your problem... you should recheck the lift and make sure everything is hook up right and tightened down correctly... some other guys might have more specific answer but i would say that something is wrong or tweaked with the lift... sorry i cant be of more assistance but a lot of guys know way more then i do on here so they should have more answers... welcome to the forum
Welcome aboard. It does sound like too steep of an angle. There is a discussion in the lift thread about the need to install an SYE and a CV shaft. Or, maybe just reshimming the rear axle wil do the trick.
From anything I've ever heard, the way to go is to get a CV driveshaft from someone like tomwoods, and get a SYE, which stands for Slip Yoke Eliminator. From what I understand, this is actually an extremely common problem when lifted 3.5''+. An SYE makes it so, essentially, the yoke can't slip out, and gives you a few more inches to work with. I don't understand the technicalities; I've never had to deal with it. I'm on 31X10.50's with no lift and TJ flares. Someone else here though (plenty of them around) knows alot more than I do. I've seen many threads about this, and JP magazine talks about it a fair amount as well.