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#1 |
Registered User
Join Date: May 2008
Location: san antonio, texas
Posts: 412
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headers smoke
ok i painted my headers with high heat header paint and they start to smoke when the truck is on for a bit.
why is it smoking if it is header paint? |
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#2 |
Registered User
Join Date: May 2008
Location: san antonio, texas
Posts: 412
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headers smoke
ok i painted my headers with high heat header paint and they start to smoke when the truck is on for a bit.
why is it smoking if it is header paint? do they always smoke after you paint them? does the paint have to get used to the heat? |
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#3 |
Registered User
Join Date: Jun 2007
Location: Smyrna, GA
Posts: 709
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Re: headers smoke
I would think that they will stop smoking. Probably just curing the paint
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Rottenwood Garage 1970...71...72 C1500 aka Orange aka Sideshow Bob 540 BB Straub Roller Cam, AFR Magnums, XP 950, TKO 600 2 Tons of Fun |
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#4 |
Registered User
![]() Join Date: Aug 2005
Location: Philly
Posts: 1,140
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Re: headers smoke
1. You sure you didn't get any contaminants on them? (oil, coolant, etc?)
2. How much smoke you talking about here? |
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#5 |
Senior Member
Join Date: Mar 2003
Location: St robert Mo
Posts: 2,001
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Re: headers smoke
I have yet to see any high temp paint that would hold up to header heat.
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1968 c10 lowered 3" 4" 355/Th400 built by Hatfield racing in joplin MO |
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#6 | |
Registered User
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Location: Chesapeake Beach, MD
Posts: 812
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Re: headers smoke
Quote:
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#7 |
Barrito Loco Diablo
Join Date: May 2008
Location: Cherry Valley, Illinois
Posts: 636
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Re: headers smoke
painting headers is hit or miss. I've done self powdercoating to headers and had it melt off an hour after installing.
you will get some initial melting of the paint, sort of like a heat treating separating the man paint molicules from the boy paint molicules so to speak. You might find that all the paint burns off. Agree'd with the above comment, did you take any precautions in getting any oil coolant or anything else stripped off before painting? or did ya take them off the truck, dust it off and spray? The high temp bbq black paint might work for you as well like dude said. I have never sprayed headers with it before, but have heard the same stories about it working great. |
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#8 |
Registered User
Join Date: May 2008
Location: san antonio, texas
Posts: 412
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Re: headers smoke
ok i used paint srtipper to take the old ugly paint off....
then i clean it with soap and water really good to make sure there is no dirt or oil....... then i painted them with high heat paint. when i turn on the truck and its been on for like 30 seconds it starts to smoke. the longer i leave the truck on the more smoke it makes. im guessing it just needs to get used to the heat and burn a little off! Last edited by drewfever1020; 06-02-2008 at 04:32 PM. |
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#9 |
its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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Re: headers smoke
any and all paint will burn. Some of the ceramic paint smokes less, and will last a year or two... but, they will burn some at first, and then wear away too.
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#10 |
Barrito Loco Diablo
Join Date: May 2008
Location: Cherry Valley, Illinois
Posts: 636
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Re: headers smoke
what temp was the paint good till? 500 or 750 or 900
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#11 |
Registered User
Join Date: May 2008
Location: san antonio, texas
Posts: 412
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Re: headers smoke
paint was good to 1200
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#12 |
Registered User
Join Date: Apr 2008
Location: Pocatello, ID
Posts: 36
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Re: headers smoke
The BBQ paint is the only paint I have been able to keep on exhaust systems.
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#13 |
Registered User
Join Date: Oct 2005
Location: Northern Arkansas
Posts: 1,136
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Re: headers smoke
I've had 1200 degree Dupli-color on my hedders for about 30,000 miles. It's finally starting to fall off, still no discoloration though. The metal must be sandblasted first to remove ALL rust and old paint. Then they will need thoroughly degreased, then thoroughly washed. Then you paint them in several light coats. The thing that makes it last is baking it in an oven. Not so easy with long tubes. I do 250 degrees for 30 mins. Let cool down in the oven until cold. Overnight works great. Then 350 degrees for 45 min. again cool down in the oven. Then 450 for 1 hour. After that they will be very resistent to heat for a very long time. The spots on mine are from water always getting in through the inner fenders and through my old cowl hood. It's a daily driver and sees all weather conditions. If not for that I think they would still look new!
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#14 | |
Registered User
Join Date: Feb 2008
Location: Bartonville IL
Posts: 415
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Re: headers smoke
Quote:
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ΜΟΛΩΝ ΛΑΒΕ Last edited by straitnate14; 06-02-2008 at 06:13 PM. |
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#15 |
Barrito Loco Diablo
Join Date: May 2008
Location: Cherry Valley, Illinois
Posts: 636
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Re: headers smoke
just be sure to ask the mrs. before putting your headers in the oven. There will be i fight, i guarantee this.
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#16 |
Registered User
Join Date: Oct 2005
Location: Northern Arkansas
Posts: 1,136
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Re: headers smoke
I try to do parts when she's not around, or working outside. She can't stand the smell the first baking round puts out.
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#17 |
Registered User
Join Date: May 2008
Location: san antonio, texas
Posts: 412
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Re: headers smoke
thats the what i didnt do, i didnt bake them!
should i just let my truck run and let the headers smoke |
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#18 |
Sheetmetal Psycho
Join Date: May 2005
Location: athens PA
Posts: 515
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Re: headers smoke
I painted my manifolds with 1200 degree paint and they smoked for 10-15 minutes but they seem fine now. I removed the rust using the battery charger and solution method. Let dry over night and painted them 3-4 coats (when one can was gone). They were dry for a week before install. Don't know how it will hold up yet since my truck hasn't been out of the garage since the engine went in.....
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#19 |
Registered User
Join Date: Feb 2008
Location: higginsville, mo
Posts: 1,601
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Re: headers smoke
it's new paint. they will stop after a while. Stinks to high hell though!
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#20 |
Account Suspended
Join Date: Jun 2000
Location: over yonder
Posts: 14,270
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Re: headers smoke
it'll smoke till all the paint is burnt off ... then you'll need to repaint
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#21 | |
just can't cover up my redneck
Join Date: May 2004
Location: Columbus OH
Posts: 11,414
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Re: headers smoke
Merged.....
Please review the rules. They are near the top of every forum.... and here for your convenience http://67-72chevytrucks.com/vboard/a...t.php?f=34&a=9 Specifically.... Quote:
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#22 |
Registered User
Join Date: Feb 2008
Location: Phoenix, Az
Posts: 1,204
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Re: headers smoke
I painted the headers on my daughters Bronco, they smoked & burnt the paint off. Then I read the rest of the drections, this is not sepcific but it says something to the effect of curing for 2 hr's at 2000 deg then 1 hr at a 1000 deg. All of the one's I've seen have that on them, which makes the paint useless.
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#23 |
Registered User
Join Date: Oct 2005
Location: Northern Arkansas
Posts: 1,136
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Re: headers smoke
If you just "burn them in" on the vehicle the paint gets too hot too fast. It needs to cure slowly in steps. I've tried other methods and they just don't work. I've had only good results baking them in stages. I've also done ATV and jet ski parts with excellent results.
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#24 |
Registered User
Join Date: Oct 2007
Location: Sykesville MD
Posts: 357
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Re: headers smoke
be careful around that smoke off of freshly painted headers, i know there are all kinds of header paints out there but i just painted a set of headers with eastwoods header paint and i actually read the can, they say that the smoke fumes burning off of the headers are toxic, who knows how bad that stuff is really, it may just be a cya from eastwood
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#25 |
Registered User
Join Date: Jan 2006
Location: Kaufman, Tx
Posts: 827
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Re: headers smoke
Yeah, I used VHT paint on mine. Supposedly good to 1200 degrees. I started the truck, let it run for a couple of minutes, shut it off and let them cool all the way down. Repeated this about 5 times.
After that I drove it around the block, and by the time I got home there was already paint peeling off. This was on sandblasted headers. About the same result I've gotten from about ten different recommended curing processes. Jay
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