Frame Rust Repair -
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post #1 of 3 Old 07-29-2002, 03:53 PM Thread Starter
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Frame Rust Repair


I've been crawling around under my Scrambler and I found a rusted-through section of frame.

It's right next to the rear leaf spring's front mounting bracket. I know it's hard to describe. Think of it as being just before the frame turns up to go over the rear axle.

I've heard this is a typical spot for CJ frame rust-out. My question is "How bad a situation is it?".

I'd hate to have to resort to a new frame. Also, I understand the older Jeeps had a C-channel frame- they weren't boxed. My Scrambler frame is boxed so basically in this spot I now have a C-channel frame- the bottom of the boxed-in portion is what's rotted.

Has anyone had experience repairing this "common" frame rust spot? I normally wouldn't be worried about a narrow, six inch long rust hole in a boxed frame except it's right at the leaf spring mounting bracket.

Any suggestions?

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post #2 of 3 Old 08-07-2002, 01:57 AM
Join Date: Apr 2002
Location: Kent, Ohio
Posts: 155
Anytime a hole is rusted thru on a frame it is of critical concern, specially when your suspension is depending on it. Your priority is to stop the bleeding, so to speak. What have you done to treat it? Wire brush and some POR-15 (from 4WD hardware, etc) can stop the advancement of rust.

If you're interested in building up the weak spot, scan the classifieds in your local newspaper under "Tires/Parts/Accessories" or similar heading. I regularly see small ads for mobile welding companies willing to repair sitches like yours! May just be worth the peace of mind. At least inquire on this next logical step in regaining frame integrity. Good luck!
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post #3 of 3 Old 08-08-2002, 10:08 AM
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You should powerwash the inside of your frame first .. clean everything up like Hippo suggested, but put in some frame supports on the sides .. and have that mobi-welder person (if you can't do it yourself) weld it in for extra strength.

Leave the bottom of the frame open so that the water and grunge can wash out .. and while you are at it, fix up the other side of the frame .. it might not be as bad, but you might as well fix it up before it gets horrible.

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