flimsy unibodys

[jeepthing07]

I put my Comanche on jack stands today to get all the 2wd crap out of there. And get ready to swap the D30 in the next few days. And when I went to get a ratchet out of my truck the doors rubbed badly! I have read about the "Cats back" on high centered XJ's. Well I didn’t feel like having a bent Comanche so I just stuck my 3" HD rustys coils in it and took it off the stands for now. I'm going to wait till i have everything so i can get it done in a day. Anyone in here ever had this problem? Is it a bad idea to leave them on jack stands for an extended period of time?

[Pete M]

Where did you put the stands? How many did you use?

[DirtyComanche]

Mine's been on 'em for half the time I've owned it.

 

 

So, if they hurt it, crap.

[jeepthing07]

Where did you put the stands? How many did you use?

 

I used 2, Put them directly behind the lower control arm mounts

[mjeff87]

My MJ sat for the better part of a year like that, with two stands behind the LCA mounts, while I worked on converting it (long story, it was 300 miles away :cry: ) Nothing hanging in the front except the sway bar, and I had the steering bungee corded up and out of the way.

 

Didn't seem to hurt it a bit ;)

 

Jeff

[87manche]

mine was up on stands for a complete axle swap. Didn't do anything like that.

i'd seriously look at the body for rust damage.

The unibody, if intact, is actually quite a bit stiffer than a regular cab on frame design.

[pingpong]

I have swapped front and back axles, cut my rig in half, and Yeah it flexes :eek: The thing to do is support the front bunper using a hilift, or a taller jack stand. By the way 12 ton stands are the tallest you can buy, unless you go to big rig junk.

[CWLONGSHOT]

I would say you need to spend some time on your back!!! You have some problems somewhere.....as they say....THAT can't BE SAFE!!!

 

CW

[Pete M]

Did somebody say 12 tons? :brows: Harbor Frieght had them on sale a few weeks back. Here they are next to a teeny tiny 3 ton stand (and a roll of paper towels apparently).

 

[jeepthing07]

I was using 12 tons... The driver’s side floor is rusted out along with the rocker panel. But the passenger’s side is rust free. Doors seemed to rub the same amount on each side though I’m sure the weakened drivers side structure did make it flex a little more than it otherwise would have. The uniframe its self is rust free!

[Hot Rod Jeep]

Hmm, my driver side is rusted out and passenger side solid too. Must not of had very many riders. 8)

[BRC 88MJ]

I was missing most of the floor on my driver's side for the better part of 3 months and had no problems with the doors or sagging. I also had a driver side hinge sag on an old MJ of mine and the door rubbed like an SOB. That truck never saw a jackstand in it's life.

 

You can weld or bolt in temporary supports inside the cab to maintain structural integrity while you're up on 'stands. If the problem persists after you do your 4WD swap, just realign the doors.