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Unread 07-25-2007, 11:11 PM   #1
bgredjeep
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Custom rear frame cross-member

I've gotten a few questions about this so I thought I would post a quick thread on the swap.

I took some vacation time a few weeks ago and did a little work on the Jeep. Just a little project that I had wanted to do for a while but never got around to. I wanted to beef up the back of the frame, add some good recovery points, improve the departure angle, and setup for a future wheelbase stretch.

Here is a before pic with the rear bumper on. This bumper is now the rear frame cross-member


I started off removing everything from the rear of the frame. I tried to save the stock cross-member for a friend but there was no way I could find to cut all the welds so I just chopped it.

all clean


welded nuts inside the frame for CJ style shackle hangers

and inside the bumper for future XJ spring stretch.


Here is the bumper mocked up on the frame. Marked for d-ring mounts as well

The JKS slickrock hanger bolted in place. These things are major beef!

and on the far side you can see how the mounts will be run for XJ springs when the time comes.


and here its all welded up, d-ring mounts installed (weld through), added some additional bracing from the frame around the recovery points. I turned the bumper around backwards to get the receiver hitch in closer (I tested to make sure a hitch would still work this way first).




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Unread 07-25-2007, 11:12 PM   #2
bgredjeep
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The shackles pictured are too long. Tonight I installed a pair from Copperhead that are about 1.5" shorter and the ride height looks just right. I'll get it out of the garage and get some finished pics this weekend.
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Unread 07-26-2007, 08:00 AM   #3
GrimJeeper91
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Nice! Looks real beefy now. The stock cross member is pretty sad. Scary when people bolt up bumpers to them without reinforcement and expect to be able to tug on them hard.
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Unread 07-26-2007, 08:06 AM   #4
rustywrangler
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This will be my next task while my rig is torn apart.
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Unread 01-01-2009, 04:19 PM   #5
TSEJEEPERS
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Hey looks good and I am in the process of doing this. One question what did you do about the rear body mounts?
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Unread 01-02-2009, 05:37 AM   #6
TSEJEEPERS
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Anyone else have any ideas?
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Unread 01-02-2009, 09:14 AM   #7
rustywrangler
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It actually looks like he may have skipped that step LOL. All you would need to do with his setup is not box in the ends and you could run a bolt straight up to the body mount. If you look at his pics, you can see the outer corners where the bolt was mounted and his bumper sits right under them.

If you did the crossmember so that it sat outside the tub edge, you could just make a tab on the inside of the bumer out of the scrap from making the bumper and mount it similar to the mid body frame mounts.
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Unread 01-02-2009, 10:58 AM   #8
E_ROCK
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Quote:
Originally Posted by TSEJEEPERS View Post
Anyone else have any ideas?
You could also tie in the body like I did for my cage. It works as a body mount also. I put in comp cut corner protection and they eliminate the rear body mounts also.



You can see it in the rear wheel well in this picture. It sits right below my "C" pillar cage plate
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Unread 01-02-2009, 11:22 AM   #9
Burlbook48
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bgredjeep, are you using a fuel cell? Just wondering, because it looks like that angled frame brace, not to mention the shocks, would get in the way of the factory gas tank.

Nice job, BTW!
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Unread 01-02-2009, 02:53 PM   #10
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Quote:
Originally Posted by Burlbook48 View Post
bgredjeep, are you using a fuel cell? Just wondering, because it looks like that angled frame brace, not to mention the shocks, would get in the way of the factory gas tank.

Nice job, BTW!
Fairly certain that is what he runs.
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Unread 01-02-2009, 08:45 PM   #11
TSEJEEPERS
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Thanks guys. Rusty the rear cross member is not close enough to run a bolt straight through the cross member but too close to run a truss from it for the body mount.
ERock someone else suggested the same thing. I have been waiting to tie my rear cage to the frame untill I did my stretch which is why I am doing the cross member fab. I guess I will go that route.
Just a little worried I would not have time to tie everything up before next run.
Hey Erock is that the same Jeep as you have always had? Last picture I can remember the body was in pretty bad shape.
Looks good!
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Unread 01-14-2009, 08:03 PM   #12
CSCmrwizard
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nice!!! my old cj needs this thanks
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Unread 01-14-2009, 08:08 PM   #13
91jeepkidd
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the stock shocks arent like that....

since im a nood and have MUCH to learn, why would someone make them on diff angles?

sorry for the thread jacking.

too bad theres no classes in college for jeeps hahah.
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Unread 07-10-2009, 07:41 PM   #14
57plymouth
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Am I the only one that can't see the pictures?
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Unread 07-10-2009, 07:42 PM   #15
rustywrangler
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Looks like a pic link failure. I will contact the OP.
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