Anybody had any luck recoating used headers?
#1813814
04/28/15 12:27 PM
04/28/15 12:27 PM
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Joined: Jul 2007
Posts: 11,836 Florida
mopar346
OP
Let me tell ya about fat chicks!
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OP
Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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I picked up a set of slightly used headers, used enough though that the painted finish burned off and they ae now rusted, not rusty but have a rusted finish. I intend to use them on a junkyard build and was wondering if anyone had any luck recoating them. I considered having them blasted and ceramic coated but that negates their advantage of being cheap. I considered using VHT since I have had reasonable luck with that on manifolds. What have you had success with?
Thanks in advance, Kevin
Careful, your character's showing!
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Re: Anybody had any luck recoating used headers?
[Re: mopar346]
#1813822
04/28/15 12:38 PM
04/28/15 12:38 PM
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Joined: Jan 2003
Posts: 4,323 NY NY
340duster340
master
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master
Joined: Jan 2003
Posts: 4,323
NY NY
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I have had good results with bbq grill paint.
1966 Dart GT
...down to only 1 mopar for the first time in 15 years!
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Re: Anybody had any luck recoating used headers?
[Re: TJP]
#1813833
04/28/15 01:02 PM
04/28/15 01:02 PM
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Joined: Jul 2007
Posts: 11,836 Florida
mopar346
OP
Let me tell ya about fat chicks!
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OP
Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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have them blasted and VHT in the color of your choice That was my original plan but was wondering if there was more info out there. Fortunately I can blast myself so that helps the cheap factor.
Careful, your character's showing!
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Re: Anybody had any luck recoating used headers?
[Re: mopar346]
#1813984
04/28/15 04:30 PM
04/28/15 04:30 PM
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Joined: Mar 2005
Posts: 1,373 Rancho Cucamonga, CA
D_C
pro stock
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pro stock
Joined: Mar 2005
Posts: 1,373
Rancho Cucamonga, CA
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The Headers on my Factory V8 Jeep CJ 5 were cheap Headman Headers. They rusted over several years. Needed to pull them off for a valve-job. Since they were off, I gasket matched the tube ports, degreased, and removed remaining paint, then, what to do about the rust.....?
I tried several methods, blasting, abrasive disks and a die grinder. Worked for flat surfaces, not so great on the tubes. I went a tiny bit radical. I found a large'ish rectangular plastic tub, filled it with Swimming Pool (hydrochloric) Acid (wearing gloves and safety goggles, etc, and dipped the headers into the acid. The rust instantly disappeared. I washed the headers with baking soda and water, rinsed. They flash rust very lightly, but very quickly as they air dry, so I had to dry with compressed air, but that flash rust was not harmful.
After fully dry, I used 2,000 degree high heat gray primer followed by 2,000 degree high heat Silver paint and it has held up for nearly 10-years so far. VHT and RustOleum make 2,000 degree paint products. I think the Primer really, really helps the longevity. I now paint all clean, bare metal exhaust pipes, blasted cast iron exhaust manifolds, etc, with the 2,000 degree primer and paint products.
The 1,200 degree Barbecue-Type Paints (without using high temp primer) all seem to fall short and eventually blister and flake off over time, even when you do your best to remove all grease and rust prior to application.
Rustoleum 2000 degree primer
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Re: Anybody had any luck recoating used headers?
[Re: mopar346]
#1814142
04/28/15 08:49 PM
04/28/15 08:49 PM
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Joined: Jul 2007
Posts: 11,836 Florida
mopar346
OP
Let me tell ya about fat chicks!
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OP
Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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Great input guys.
DC how much is the hydrochloric acid?
Careful, your character's showing!
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Re: Anybody had any luck recoating used headers?
[Re: mopar346]
#1814900
04/29/15 10:31 PM
04/29/15 10:31 PM
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Joined: Jul 2008
Posts: 259 Khemi, Stygia
Mebsuta
enthusiast
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enthusiast
Joined: Jul 2008
Posts: 259
Khemi, Stygia
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A long time ago, I had some headers blasted, then painted them with rattle-can header paint. They looked nice for about a month, then went back to looking like ancient headers. They are still on the car and working fine, they just look ancient. I like it that way because it's an old car.
68 Roadrunner. 383 4-spd. Beat up.
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Re: Anybody had any luck recoating used headers?
[Re: Wicked49670dart]
#1819179
05/05/15 09:08 AM
05/05/15 09:08 AM
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Joined: Jul 2007
Posts: 11,836 Florida
mopar346
OP
Let me tell ya about fat chicks!
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OP
Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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I use Por-15 Black Velvet paint, does not burn off. Can brush it on, looks good. Interesting.
Careful, your character's showing!
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Re: Anybody had any luck recoating used headers?
[Re: DaytonaTurbo]
#1819181
05/05/15 09:09 AM
05/05/15 09:09 AM
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Joined: Jul 2007
Posts: 11,836 Florida
mopar346
OP
Let me tell ya about fat chicks!
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OP
Let me tell ya about fat chicks!
Joined: Jul 2007
Posts: 11,836
Florida
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I did a set of used headers with VHT products, they rusted back through in a hurry. If you're not going to blast and/or prep proper, don't bother. Why would anyone go to the double of doing it without blasting?
Careful, your character's showing!
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Re: Anybody had any luck recoating used headers?
[Re: mopar346]
#1819398
05/05/15 03:36 PM
05/05/15 03:36 PM
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Joined: Mar 2005
Posts: 1,373 Rancho Cucamonga, CA
D_C
pro stock
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pro stock
Joined: Mar 2005
Posts: 1,373
Rancho Cucamonga, CA
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Hope Springs Eternal... Blasting, Degreasing, Rust Removal are a fair amount of effort and if you could get away with simply shooting some rattle can on 'em, and it it would stick, look better and stop the Rust, I wouldn't blast, etc...
But unfortunately, lasting results that don't flake off and which stops or slows rust, involves cleaning as best you can to Bare metal prior to coating or painting, though it would be nice if you could get away without all that effort.
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