I lifted my XJ 4", dropped my transfer case 1" and it still vibrates, do i need a wedge for the springs?

 

Yep!! rear spring shims is exactly what you need. I believe about 6 degree shims and 1" TC drop is what came with my 4.5" Rusty's lift.

 

Thank you. I WILL get some real soon. I love my XJ


Just checked, iron rock has em in stock, 7 miles away.

 

Or do it right and get s SYE and a a longer rear shaft.

That is, as long as you know all your u joints are good.

 

Yeah if the shims don't work then check out sye's and a rear cv driveshaft (or front driveshaft from another xj). This will fix your vibes for sure.

 

On 3.5" lift I was vibin and eating rear universals, I used 4 deg shims, no trans drop, smooth.

 

I installed a 3" Rough Country Series II lift and have had vibes since. I just recently put in about a 3/4" T-Case drop and now I'm getting vibes at my feet at highway speeds that is much more pronounced. Wasn't that bad before. Thinking my front U Joints are shot but, they don't seem to have any play in them. Any other ideas as to what to check?

Thanks for the help

 

there is NOTHING wrong with a tcase drop and shims... but a sye is the better route for sure (assuming you have the money)

 

U joints are all brand new

 

I can think of at least one thing wrong with a TC drop , loss of ground clearance in the middle of you rig. Wait make that two things, it also puts more strain on your motor mounts. Damn it that means there are three things, it also makes your front driveshaft angle worse.

But for most part those things are better than a binding vibrating noisy rear shaft. And yes I have used them, but after getting hung up on my cross member time and time again I have finally swore them off.

 

If this is what it takes, it is my goal. Cant do it all at once. TY

 

I have a RE3.5 lift and tried the tc drop. Didn't work. Had to go with an SYE kit,Drive shaft and 6deg. shims then removed the tc drop. Perfect now.

 

I mean I have shims and a tcase drop on my jeep and I'm running fine but jf they don't work on yours then this is the solution.

 

Oh damn. Someone gets the idea.





Keep in mind, though, bad u joints can be made to feel worse when the lift goes higher. Maybe it could be just crappy u joints...how old are they?

 

I did a JY lift..I'm at about 3-3.5..had small vibes at 60+...snagged a ZJ rear DS...no more vibes :2thumbsup: