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BackCountryMud 12-07-2011 09:19 PM

Installed new lift, U joint + exhaust problems
5 Attachment(s)
I installed the RC 3.25 suspension lift last week and my front U joint is hitting my exhaust when i turn right if the body flexes, even on the road or turning into driveways. It appears someone did an exhause repair and put a spacer in and moved the pipe forwards, here's some pics of the spacer first, next to the front control arm.Attachment 81980

Attachment 81981
Next here's some pics of the exhause and U joint, notice the dark space on the exhaust, thats a dent :banghead:. The picture where you can see the tan carhart jacket is from above.

BackCountryMud 12-07-2011 10:15 PM


s14sh3r 12-07-2011 10:22 PM

Is the exhaust loose? It shouldn't be solid, but it shouldn't move around very much either. You may be able to tweak it enough with a pry bar to keep it from hitting.

BackCountryMud 12-07-2011 10:23 PM

It's pretty solid. can't hardly move it with your hand.

BackCountryMud 12-07-2011 10:26 PM

It's pretty damn close WITHOUT articulating, it's spinning within about a quarter inch of the pipe, not sure why it moves, only notice is while turning right as well.

s14sh3r 12-07-2011 10:27 PM

Look at it and see if there's room for the spot where it's hitting to move over a little. If there is, a pry bar of some sort + a couple of small wooden blocks and you should be able to bend the exhaust and get it away from the u joint.

BackCountryMud 12-07-2011 10:31 PM

Ill try it! ill upload more picks of all the spacing and stuff as far as the exhaust spacing between other parts this weekend when im gonna decide what to do.

s14sh3r 12-07-2011 10:57 PM

Here's a really crappy diagram of what I'm suggesting:

From the pictures, it looks like they didn't get the exhaust straight when they welded that new piece in. What I would do is find a small block of wood, a small piece of 2x4 would be great, or use whatever you have handy. Pull the exhaust away from the u joint enough to put the block between where it's hitting the exhaust and the u joint.

This is assuming the new piece is toward the front, which I've indicated with the red circle. When you have the exhaust blocked away from the u joint, use a pry bar, tire iron, small piece of pipe, or whatever... and pry the exhaust pipe toward the driveshaft. When you take the block out, the pipe will be bent away from the u joint. Don't pry very much at one time. Pull the block out and check if you have to. Make sure by bending the exhaust away from the u joint, the pipe isn't hitting somewhere else.

Hopefully that made sense.

svtkev 12-07-2011 11:49 PM
Lol nice!!

BackCountryMud 12-08-2011 09:23 PM

Do you mean pry between the frame and the exhaust?

DevilDogDoc 12-08-2011 09:30 PM

Unless it hit before the lift, your axle shifted over which is why things are hitting. Did you do anything to your track bar up front when you lifted?

BackCountryMud 12-08-2011 09:36 PM

No i didn't change anything with the trac bar, was i supposed to?:banghead:

DevilDogDoc 12-08-2011 10:14 PM

Well some kits have you re drill the mount hole on the axle to move the tracbar and recenter the axle. Or get an adjustable tracbar and set it. That said, mine has been offset for a couple of years with no issues but that exhaust repair of yours adds another variable that might be the problem.

s14sh3r 12-08-2011 11:19 PM

I looked at the instructions for the RC 3.25 lift and it comes with a track bar bracket. If you didn't install it, DevilDogDoc is right, your axle will be off center.

BackCountryMud 12-09-2011 06:41 PM

It only came with one for the rear.

DevilDogDoc 12-09-2011 07:17 PM

Thats the problem with the lower end lift kits, they can be incomplete. Do this before you do anything else. Disconnect the tracbar at the axle. Bounce the bumper up and down a few times to center it. See if the clearance improves between your exhaust and driveshaft. If it does then you need to decide on whether you drill the bracket to where it is now or get an adjustable trac bar.

coors 12-09-2011 08:07 PM

yeah you were suppose to move it over 3/4 of a inch

TnDz TJ 12-09-2011 09:28 PM

3/4" is the magic number for the redrill.....

DevilDogDoc 12-09-2011 09:44 PM

^^ not exactly right. The amount varies depending on the height you raised it and how much the axle shifted over.

TnDz TJ 12-09-2011 10:58 PM

True.... 3-4" lift should be 3/4". We did this to 06 rubi with 4" lift and was perfect. Every jeep is different, so it's not exact. Sorry for the confusion.

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