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Trunk. Paint or Undercoat?
#1
Hello everyone, working on my 1971 mach 1 next weekend, am currently cleaning/removing rust from trunk, sanding, and then the big question. Should I paint the trunk, or use undercoat?
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#2
I’m getting ready myself and I think I’m going to use lizard skin on the inside


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#3
There is really no reason to put undercoating inside the trunk. After you get all the rust off you can I would seal it up with a coat of POR. Best to use a brush also you can get much better coverage than with spray. That is the reason the tail light panels rusted so bad. They got no primer or paint on the surface where the gasket went so rusted the first time you washed the car. I myself have never found a paint that even looked close to original spatter paint.


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David
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#4
(05-11-2019, 11:41 AM)Carolina_Mountain_Mustangs Wrote: There is really no reason to put undercoating inside the trunk. After you get all the rust off you can I would seal it up with a coat of POR. Best to use a brush also you can get much better coverage than with spray. That is the reason the tail light panels rusted so bad. They got no primer or paint on the surface where the gasket went so rusted the first time you washed the car. I myself have never found a paint that even looked close to original spatter paint.


what do you think about Lizard skin product?


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#5
I put lizard skin and painted it black. (my stang is black)Undercoat is too soft and will scratch easily. Upol now makes 2k raptor bedliner in aerosol. None of this will look original. Zolotone spatter paint is another option. More and more custom car builders that I know are going the lizard skin route.
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#6
I did Lizard skin and Dup-color splatter gray. Sorry Pic doesn't show the splatter because of the texture of the Lizard skin. It takes about 5-6 cans to get good coverage so not see paint streaks.


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- Mike
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#7
The factory applied undercoating to the insides of the quarter panels, guessing it was for sound deadening purposes. I still have quite a bit in mine since I only needed to replace the lower sections, so I resprayed deadener on the quarters. I also helps to hide the weld seams.... Big Grin

For the trunk floor I used POR15 topped with the spatter gray and the clear overcoat. I have to redo the spatter paint as it's worn down over the last 13 years.


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#8
After the Rust Bullet coats I used UPOL bedliner (by brush since there was no spray option back then), then Boom Mat spray over the fenders and completed with a top coat of Duplicolor trunk paint. As a note, top coating the Boommat did not work that well since it looks yellowish in those areas.

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        [Image: 20160929_171923_edit2_small.jpg]

1971 M-Code Mach 1 w/Ram Air, 408 stroker, 285/291 0.558" roller cam, Blue Thunder intake, TKO600, Hooker headers with electric cut-offs, FiTech EFI w/ RobBMC PowerSurge pump
Strange center section with Truetrac, 3.5 gear and 31 spline axles, 4-wheel disc brakes
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