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Unread 05-28-2015, 07:43 AM   #1
Brayyx322
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1979 CJ7 
 
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1979 cj7 frame dimensions

Looking for help on what the dimensions are on the 79 jeep frames. Both rears (about 10 inches) is rusted through both sides but the rest is solid. Looking to cut and replace them. A guy at work can fab me up the steel I need, but I need the dimensions/width of the steel to know what needs to be fabbed up. Thanks in advance!

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Unread 05-28-2015, 12:40 PM   #2
Coiz
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Unread 05-28-2015, 01:02 PM   #3
CSP
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Pretty sure the OP is asking about the height/width of the last 10" of the frame rails.
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Unread 05-28-2015, 06:44 PM   #4
keith460
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I made up these pieces for the last 5" rotted inside frame pieces for my CJ frame.



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Unread 05-30-2015, 05:28 AM   #5
Brayyx322
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This is what I'm looking at as far as what needs to be cut out and redone. This side is way worse than the passenger side.
forumrunner_20150530_072703.jpg  
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Unread 05-30-2015, 05:29 AM   #6
Brayyx322
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Also, the frame is solid right after the rust stops. Checked 360° and the only weak part of the frame is the back portion of both sides.
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Unread 05-30-2015, 06:23 AM   #7
Steve79cj7
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You can buy pieces bent and drilled on line. They are a little pricey but they are an exact fit. This is what I used for my 79.

http://www.jeep4x4center.com/auto-ru...t-art-41l.html

frame-repair-2.jpg
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Unread 05-30-2015, 06:28 AM   #8
Brayyx322
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I seen those, and I kinda wanted to save the $115, but now sitting here thinking about what I'm dealing with, I should probably go with an exact fit because it's the frame, shouldn't really skimp on arguably the most valuable asset of the jeep lol. Do you have any pictures of your work? The cut and weld preferably? I have a plasma and 3 welders in the garage, just like having pictures to reference.
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Unread 05-30-2015, 06:40 AM   #9
Steve79cj7
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Its a little hard to get good measurements on the back with the rear crossmember in the way and the rear section of the frame is two pieces that slide inside of each other. On top of that they are kind of rounded out so if you make your own and even if you buy them you will have to kind of hack them in. I took some pictures of my 84 from the front because the dimensions are the same. I also took one of the inside dimensions of the rear crossmember. The frame slides into it.

frame-1.jpg

frame-2.jpg

frame-3.jpg

frame-4.jpg
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Unread 05-30-2015, 09:53 PM   #10
Steve79cj7
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Ill try to get some pictures of the fix tomorrow. I don't think its a matter of safety because either way your welding steel. Might come down to making the rear cross member, bumper, body mounts, shackles etc. all line up.
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