Fighting Rust

Discussions about general body work and modifications
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Caveman49
Posts: 509
Joined: Mon Aug 17, 2015 12:15 am
Location: South Alabama

Fighting Rust

Post by Caveman49 »

I’d like to get some feedback if possible on painting the hood on our 66 Comet. This will also carry over throughout the rest of the car, especially the roof and trunk area.
I’ve stripped down the hood, and put picklex20 on it, that stuff preserves it well. I want to epoxy prime but am concerned about what looks like rust embedded into the hood (see picture). I want to prime then body work the dents in it, prime again and go from there.
Any thoughts on priming over this as it is, or should I try sanding more, ospho, or something else. I’ll be doing this to the rest of the car as well.

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Thanks for any feedback, I need to get back at this thing…..
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Motor Safe,
Lee

Rootsy
Posts: 242
Joined: Tue May 04, 2010 3:27 pm
Location: La Salle, Michigan

Re: Fighting Rust

Post by Rootsy »

Phosphate it and go from there.
1964 Cyclone - 2 Dr / HT - A work in progress...

A/FX
Comet Central Member
Posts: 1136
Joined: Tue Jan 06, 2004 8:07 pm
Location: S.E. Wisconsin

Re: Fighting Rust

Post by A/FX »

You must remove the rust not cover it with any “miracle” product. The rust will go through the metal to the underside if you try to just treat it. Sand it, lightly blast it, or have it dipped, either way you cannot prime or paint over rust, unless the future of your efforts are not important.
I have learned this from decades of building cars. Do it right the first time and you will not have to worry about a second time.
Just my opinion.
Jim
‘64 Cyclone/ Boss 302,quads,4spd, Winters 9”

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Lou's Comet
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Joined: Sat Nov 26, 2011 8:56 pm
Location: Jeannette, Pa.

Re: Fighting Rust

Post by Lou's Comet »

Agree with Jim, get rid of the rust.

I would DA the hood down wit 80 grit to bare metal then 2 coats of epoxy primer.

Sandblasting a hood can go bad quickly. If you do want to blast it you need to take it to someone who has experience with auto body panels.

If after you DA the hood there is still a littl rust you can blast it very lightly. Low pressure with nozzle a good foot away. Practice with some cardboard first. Adjust pressure and distance where you are just making the top of the cardboard fuzzy. If you are blasting thru the cardboard you will likely warp hood.

I think DA'ing with 80 to bare metal then 2 coats epoxy primer should do you well!

Lou
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Caveman49
Posts: 509
Joined: Mon Aug 17, 2015 12:15 am
Location: South Alabama

Re: Fighting Rust

Post by Caveman49 »

Thanks guys, I was thinking along the line of trying what Lou mentioned, to DA with 80, and see what it does. It’s like a deep seeded rust, but I’ll try first with the DA, if that doesn’t work, I’ll likely blast it as you guys mentioned.

If all else fails, I’ll stop by and see my Comet parts guy Doug, maybe he has a hood for me 😁 I know he has a Cyclone hood, but am not thrilled about installing it on this car….although, if I ever run across a 2dr, it would be nice to have.

Thanks again for the feedback.
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Motor Safe,
Lee

Lou's Comet
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Re: Fighting Rust

Post by Lou's Comet »

Caveman49 wrote:
Wed Jun 19, 2024 2:05 pm
............................It’s like a deep seated rust, but I’ll try first with the DA, if that doesn’t work, I’ll likely blast it as you guys mentioned. ............
Is it also rusted on the underneath of the hood same area??

Just a suggestion but I would start where the rust is the worse. Sand with DA,,, hit with stiff wire brush, sand blast, blow gun on air hose, etc.
Both sides of hood if other side is rusted too. This way if you get pin holes or rust-thru you find out before doing the whole hood. Instead of doing the bad rust last and find out you have holes after doing whole hood. Deep seated rust may produce some holes when taken off on sheet metal.

Lou
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Caveman49
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Re: Fighting Rust

Post by Caveman49 »

The underside isn’t bad, a bit of surface rust, but it’s pretty solid, still has original paint on the area below the bad spots on top.

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Motor Safe,
Lee

A/FX
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Re: Fighting Rust

Post by A/FX »

Is the rusty area under the hood above the battery tray? It looks like acid damage that ate the paint away then rusted.
Jim
‘64 Cyclone/ Boss 302,quads,4spd, Winters 9”

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Caveman49
Posts: 509
Joined: Mon Aug 17, 2015 12:15 am
Location: South Alabama

Re: Fighting Rust

Post by Caveman49 »

A/FX wrote:
Wed Jun 19, 2024 8:28 pm
Is the rusty area under the hood above the battery tray? It looks like acid damage that ate the paint away then rusted.
Jim
You nailed it Jim 👍

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Motor Safe,
Lee

power band
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Re: Fighting Rust

Post by power band »

looks like acid damage that ate the paint away then rusted.
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and better look under the battery tray too ...
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hav fun

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Joe Travers
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Re: Fighting Rust

Post by Joe Travers »

power band wrote:
Thu Jun 20, 2024 8:58 am
looks like acid damage that ate the paint away then rusted.
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and better look under the battery tray too ...
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Image . Image
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hav fun
Yep, PB. The advent of the 'maintenance free' automotive battery was a positive in this department :D

Joe
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1963 1/2 Custom Hardtop
342 stroker, solid roller, T-10, 3.55 posi

Caveman49
Posts: 509
Joined: Mon Aug 17, 2015 12:15 am
Location: South Alabama

Re: Fighting Rust

Post by Caveman49 »

Yeah, the battery tray and frame underneath were a little corroded, but not bad. Every 66 Mustang I had was bad for corrosion there.

Thanks guys! Hey Joe, good to see you active again, hope you have fully recovered 👍
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Motor Safe,
Lee

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