Undercoating Removal - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 09-15-2003, 02:32 PM Thread Starter
 
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Undercoating Removal

I have cleaned up a new front clip for my YJ to CJ conversion but have come up against the toughest undercoating I've ever seen inside the fender well. Automotive paint striper wouldn't touch it and engine cleaner wouldn't soften it. If I scrape it with a putty knife it comes off like asphalt and heavy tar. The entire fender is striped and preped except in the wheel well. Any suggestions other than SERIOUS elbow grease?

Thanks as always,
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post #2 of (permalink) Old 09-15-2003, 03:05 PM
 
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Re: Undercoating Removal

I've heard of others using an angle grinder with a wire wheel attachment which supposedly worked well, or a small propane torch and a scraper. Make sure you use some type of mask though, I'm sure that stuff not good for the lungs. Good luck!
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post #3 of (permalink) Old 09-15-2003, 03:13 PM Thread Starter
 
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Re: Undercoating Removal

I thought about sandblasting but as sticky as the undercoating seems to be, I would not want to compound the problem with the addition of sand.

propane is a good idea, I might try that.'

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post #4 of (permalink) Old 09-15-2003, 03:21 PM
 
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Re: Undercoating Removal

Try some tar remover, most of the undercoatings are oil based. May take a little soak time to get it.
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post #5 of (permalink) Old 09-15-2003, 04:01 PM
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Re: Undercoating Removal

Hey,
I had same probelem when trying to reuse my fenders and hood. We did two things to clean it up. 1) Sand it with a DA with 60 Grit. 2) Then we pressure washed it with a 3300psi washer. It worked great does take sometime, you may be able to just use a hi-pro pressure washer.
good luck
post #6 of (permalink) Old 09-15-2003, 06:11 PM
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Re: Undercoating Removal

Leave it on? Sounds like great stuff.
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post #7 of (permalink) Old 09-16-2003, 09:34 AM Thread Starter
 
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Re: Undercoating Removal

I've considered that but with all I've done to the rest of the jeep, I would like to have the paint under the undercoating at least match the rest of my rig. It would drive me nuts just knowing I had left it. I'm not obsessive compulsive, I just have to have everything perfect, ALWAYS!!! [img]images/graemlins/wink.gif[/img] just kidding.

Thanks all, I'll definately try the propane first and scrape... Fire, FIRE! [img]images/graemlins/AR15firing.gif[/img] [img]images/graemlins/thud.gif[/img]

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post #8 of (permalink) Old 09-16-2003, 04:22 PM
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Re: Undercoating Removal

Scrape off what you can with a scraper then hit with some carburator cleaner!!! help my buddy do this to a camero that he built for a show car. Took awhile to do the the underside of the care but one fender shouldn't take that long....
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