I think I have Axle Wrap??

[skunker]

Hi everybody,
I have a stock 1990 4WD XJ just a little over 100K miles. Last week, I installed a 2" RE6165 w/Blocks (http://www.rubiconexpress.com/dynamic/mainpage.asp?folderid=185) that came with new shocks (Deutsch).

When I fired up the Jeep after the installation, I noticed that it had a small bit of wheel hop (I'm not experienced, but after reading some of the posts here, it seems that's what I have) and, most importantly, I get a jolt in the rear whenever I accelerate after a full stop. I am guessing this is AXLE WRAP? The axle wrap symptoms sound exactly like what I am experiencing. It's sort of like the lower half of the Jeep goes in reverse while the top half goes forward.....like an "S"??

Now, before you all blast me for installing blocks (why does RE sell the block kit?), is there something I can do to fix this problem? Someone mentined a pinion snubber. Will that fix the problem?

This sucks.

 

[pancake]

Are the u-bolts tightened all the way with a torque wrench? I believe they should be 55 ft. lbs.

 

[ashmanjeepxj]

did you lower your transfercase?

Your rear leafs will wrap,a dn they always have, but they shouldent make noise.

If you do a 1in transfercase drop it will probibly help but an SYE might be what you need. I did a 2.5 AAL and 2in block and I couldent drive around the block with out doing the 1in drop on the T-case mounts. After the drop it was driveable, but still made some noise if I hammered down on it. Now with an SYE my drive shaft dosent make any noise when punching it from a complete stop.

 

[Fore Wheeler]

when you intall blocks, you're also increasing the leverage the axle has on your springs, thus increasing/causing axle wrap.

you'll need new springs or a anti-wrap bar to fix, check M.O.R.E. mfg.