C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Undercoating

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Old May 23, 2006 | 04:38 PM
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Default Undercoating

I am trying to clean up the wheel wells and no amount of cleaning with power washer or chemicals will clean the undercoating.

What would be the best product to re-coat the front and rear wheel wells of my '91.

Thanks
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Old May 23, 2006 | 06:58 PM
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try truck bed liner.
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Old May 23, 2006 | 07:54 PM
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Did a prior owner have the plastic inner fender panels coated? The factory did not do any undercoating and the ABS plastic panels should easily last the life of the car.

I would simply use a good degreaser with lots of hot water to rinse and paint the panels with Krylon semi-flat black spray paint.
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Old May 23, 2006 | 07:58 PM
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As above - don't know of any factory undercoating. When I really get **** about it, I take them off and wash them separately - then slather them with some Armor-All (both sides) to make 'em nice and shiney.
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Old May 23, 2006 | 08:06 PM
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There was definitely no undercoating on my '91 ABS wheel well inserts. When I cleaned mine I gave them a good scrub and then put a spray coating of furniture polish on them. I know, furniture polish sounds funny but the stuff has a wax base that doesn’t let the road tar stick to the ABS (makes cleaning in the future easier) and it doesn’t attract dust and dirt like armor all does. I don't think that I would use this stuff anywhere but my wheel wells though. Anyway, they look great.

You might have to carefully take a razor blade and clean off the tar spots that won’t come off with soap and water. That’s what I did.

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Old May 23, 2006 | 08:08 PM
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There shouldn't be any undercoating... it's just that my inner liners are all pocked with stone hits. ugly.
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Old May 24, 2006 | 10:05 AM
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Thanks for the response. There is some sort of coating on all the wheel well parts, it is NOT just where the tires would spray them with road "tar" but every square inch if the panels. I have taken them off and hit them with a power washer with no results, have used degreaser too. The degreaser will start removing the coating but it is time consuming. I much prefer the panels without the mess on them so I will spend more time on them.

Thanks again for the information.
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Old May 24, 2006 | 12:14 PM
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air compressor, die grinder with a steel brush. Wear goggles.
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Old May 24, 2006 | 02:14 PM
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That wire brush might scratch the ABS. If you have one off take to a local automotive paint store & see what they recommend.
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Old May 24, 2006 | 02:19 PM
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Originally Posted by jmyokley
Thanks for the response. There is some sort of coating on all the wheel well parts, it is NOT just where the tires would spray them with road "tar" but every square inch if the panels. I have taken them off and hit them with a power washer with no results, have used degreaser too. The degreaser will start removing the coating but it is time consuming. I much prefer the panels without the mess on them so I will spend more time on them.

Thanks again for the information.
see if a hot air gun will help you remove whatever this coating is. then just repaint with a good plastic type black matte.
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