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Advice on Frame Repair
Hello All!
New to the forum and to jeeps. I purchased a '79 jeep with the intention of doing a frame up restore on her. I've never done anything quite like this, so it is going to be a learning experience.

Now shes look more like this:

When I bought her I knew the frame had some rust in the back, as is common with the CJ7s. What I didn't realize was that someone had already done a bad repair job on the frame in the rear. I pulled off the back bumper and got a good look at it today. So here is the current state of the back of the frame:



The PO put a metal beam inside the frame to support it (driver side one is stuck). Then drilled holes through the frame and bolted metal sheets 1/4 inch thick out the outside. When I first saw it I just through that is was how the bumper was mounted to the frame. Obviously not.
Has anyone dealt with this level of rust damage on a CJ frame before? I'm thinking I could get a local welding/fabrication shop to cut the last 1-2 feet of frame off, fabricate a replacement and then weld it on. Does this sound reasonable ? Is there a better way to go out this repair?
Any help/ideas are appreciated!
New to the forum and to jeeps. I purchased a '79 jeep with the intention of doing a frame up restore on her. I've never done anything quite like this, so it is going to be a learning experience.

Now shes look more like this:

When I bought her I knew the frame had some rust in the back, as is common with the CJ7s. What I didn't realize was that someone had already done a bad repair job on the frame in the rear. I pulled off the back bumper and got a good look at it today. So here is the current state of the back of the frame:



The PO put a metal beam inside the frame to support it (driver side one is stuck). Then drilled holes through the frame and bolted metal sheets 1/4 inch thick out the outside. When I first saw it I just through that is was how the bumper was mounted to the frame. Obviously not.
Has anyone dealt with this level of rust damage on a CJ frame before? I'm thinking I could get a local welding/fabrication shop to cut the last 1-2 feet of frame off, fabricate a replacement and then weld it on. Does this sound reasonable ? Is there a better way to go out this repair?
Any help/ideas are appreciated!
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IF you have the skills, equipment, and spare back half of a late CJ frame sitting at your house, go for it.
but when farming something like that out to a shop, it would be better time and money spent to just replace the frame with a better one. I usually pick up good frames in the free to 400 buck range....in my area....
I have done extensive frame repair before and can't imagine trusting a regular shop to get it right.and their labor bill would be huge.
but when farming something like that out to a shop, it would be better time and money spent to just replace the frame with a better one. I usually pick up good frames in the free to 400 buck range....in my area....
I have done extensive frame repair before and can't imagine trusting a regular shop to get it right.and their labor bill would be huge.
Ed
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
2003 Inca Gold TJ Rubicon
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Hey thanks for the reply man. I found some prefabricated parts on the Web thag are used to fix that section. I think I'm gonna go ahead with the repair
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I just went through the same thing. My son is 15 he wanted a cj5 so I figured he needed to learn something anyway. We picked up a 79 and the back part of the frame needed work in the same spots as yours. Check out my pics of what we did. I don't know how to paste the link but I just put it in the jeep build section. 1979 cj5. If you have any questions about what I did let me know and good luck!!
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Here we go this was my start. Pretty much the same on the other side.
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All finished up for the most part



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Thanks for the pictures guys! Definitely a confidence booster to see pictures of what you've done.
Jeep. There's Only One
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Join Date: Nov 2007
Location: Off the Grid in Chester Grant
Posts: 18,083
Quote:
Originally Posted by keith460
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Did the same for the back end of my frame as well, but didn't have as much rot as some of you guys have.
Only had to replace 5 inches of the inner frame pieces on both sides. Had a local weld shop fabricate some pieces that matched OEM frame dimensions.
Only had to replace 5 inches of the inner frame pieces on both sides. Had a local weld shop fabricate some pieces that matched OEM frame dimensions.
Mike
86/00 CJ7 Laredo, 33x9.5 BFG AT's, 'glass nose to tail in '00, 'New' frame,wires and plumbing in '09. Carter BBD Carbed 4.0 HO in '10.
89 YJ Renegade. BBD Carbed 4.0 HO. Locked front and rear with 33x9.5 BFG AT's
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Jeep. There's Only One
Yeah, its holding. But then again, I never take it out in the rain or salt covered roads in the winter. Plus, the entire frame is painted and coated with Linseed Oil in the inside.
.
1984 CJ-7 Renegade
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cj7 , frame repair , rust |
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