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#1 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,268
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Rustoleum high heat ultra
I have searched and could not find any threads about using this for painting headers. Anybody used it with any success?
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#2 |
Registered User
Join Date: Mar 2006
Location: Latrobe, Pa. 15650
Posts: 344
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Re: Rustoleum high heat ultra
I've used Dupl-Color or Krylon high temp 1200 degree paint with extreme success. The trick is in the prep. For best results is to sand blast the headers. You can hand sand them, but that is more work. Plus the sand blaster gets into the places the sandpaper will not. If you can, hang the headers from something (ceiling, scaffold, tree limb, etc.). Here is the trick. Take a propane torch and heat the tubes by blowing the flame into each tube. DO NOT touch the flame on the header. If you hold the flame inside the opening of the tube, you will see the heat wave travel the length of the tube. Do this on both ends of the header. DO NOT get the header glowing hot. You just want it hot enough to see the heat wave. Make sure you shake the spray can really good. It comes in several colors and sheens. I sprayed mine silver like the ceramic coated headers. I painted mine 6 years ago and they still look good. The paint will not burn off. I've seen people who used this same product and they painted their headers right out of the box and watched it burn off in 10 minutes because they didn't prep it properly. Sorry for making this a novel. Just one idea I've used for many years. Cheaper than ceramic coating or chrome.
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#3 |
Registered User
Join Date: Apr 2015
Location: Pacific Palisades CA
Posts: 98
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Re: Rustoleum high heat ultra
I used some POR 15 high temperature paint on our exhuast. It was a really nice silver when sprayed. It really like being baked on when the engine got the exhaust nice and hot. Otherwise even stuff like simple green seemed to wipe it off.
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#4 | |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,268
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Re: Rustoleum high heat ultra
Quote:
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#5 |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Rustoleum high heat ultra
The way that I read his post is to "slightly" heat them from within NOT THE OUTSIDES and then SHAKE THE CAN of PAINT real good then spray them. The heat cures them just as if you were to drive your vehicle right after installing your freshly painted exhaust.
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#6 | |
Registered User
Join Date: Sep 2012
Location: TX
Posts: 1,014
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Re: Rustoleum high heat ultra
Quote:
And then they're done, and the paint stays good forever. |
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#7 |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,250
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Re: Rustoleum high heat ultra
I've used VHT to good effect. I didn't pre-bake, but after hanging pre-sandblasted headers in the Arizona summer sun for a few hours, they're too hot to handle with bare hands. A couple of coats of VHT Cast Iron Gray has lasted about 11 years. Only lately is a little rust coming up, and that's because I've been having to leave the hood up to discourage packrats from nesting in the engine bay. [If the hood is up, they're not safe from cats.]
Another method I used was a DIY ceramic coating from Eastwood [about $50 a can in 2007]. Headers were sandblasted and the ceramic coating was airbrushed on. After they were not runny -- about a day later-- I put both headers in my Mom's old electric oven for 2 hour at 500*F. Came out good. I used Black, but after my project was done the next Eastwood catalog showed a Titanium shade. Oh well. V8 headers will fit in the conventional oven, but long tube L6 headers are probably too long. Don't use the oven indoors, lots of fumes, and don't use an oven you still need for cooking food for humans. Once it's a header oven it can't go back.
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#8 |
Registered User
![]() Join Date: Nov 2006
Location: Virginia's Eastern Shore
Posts: 91
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Re: Rustoleum high heat ultra
x2 for the VHT high heat cast iron gray paint. With proper prep the stuff lasts longer than anything else I've ever seen.
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#9 |
Registered User
Join Date: Mar 2006
Location: Latrobe, Pa. 15650
Posts: 344
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Re: Rustoleum high heat ultra
I forgot about VHT. I've used it also. Can't find it around here anymore. Only the other two paints. I've also used Eastwood's stainless steel header and exhaust paint. That was over 20 years ago. That's where I learned it's all in the prep. Again you DO NOT get the header too hot before you paint or the paint will boil off. When you heat the tubes, you can actually watch the heat wave travel the length of the tubes. I use the 2" big block long tube headers and they don't fit in the ovens. I still have success with them hanging and using the torch. I get a lot of years out of using this method.
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#10 | |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,268
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Re: Rustoleum high heat ultra
Quote:
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#11 |
Account Suspended
Join Date: Apr 2016
Location: Rancho Mirage, Ca.
Posts: 875
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Re: Rustoleum high heat ultra
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#12 | |
Senior Member
![]() Join Date: Feb 2002
Location: Tucson, AZ USA
Posts: 7,250
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Re: Rustoleum high heat ultra
Quote:
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Every 25 years I like to rebuild that 292, whether it needs it or not. |
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#13 |
Registered User
Join Date: Apr 2013
Location: Ogden, UT
Posts: 123
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Re: Rustoleum high heat ultra
Just read the directions on the can. I think I used VHT too. You have to heat the headers with a few heat cycles after painting. Pre heating shouldn't be necessary for a good finish, but I can see how it may help. I painted mine and put them on the truck then followed the instructions. Something like drive for 15 mins then cool for 30 then drive for 20 then cool, etc... after one year of daily driving mine still look perfect.
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#14 |
Registered User
Join Date: Mar 2006
Location: Latrobe, Pa. 15650
Posts: 344
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Re: Rustoleum high heat ultra
You can heat the whole header in one shot. It only takes a few minutes to get it hot. The header will hold the heat for a while. What the heat mostly does is removes the moisture which hurts the adhesion of the paint. When you buy new headers, they have a thin layer of black paint or some kind of oil coating to protect them from what we call shelf rust. Who knows how long the headers will sit before they are sold and installed. First time users of headers will complain to where ever they bought them because they weren't informed. That is why you see more rusty looking headers because people don't want to remove them and finish them the right way. I for one don't like to remove them if I don't have to. Finish them right before you install them and be done with them.
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#15 |
Senior Member
![]() Join Date: Jun 2005
Location: Winona Lake, IN
Posts: 6,268
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Re: Rustoleum high heat ultra
I will pre-heat them somehow, either with a propane torch or in the oven, before I spray them. I just got the headers yesterday, going to bead blast them and then I will heat them and spray them. I appreciate the advice guys. FWIW, Hedman calls their black coated Hedders "uncoated" and it states in the instructions that the black coating is only to prevent shelf rust, and they should be properly painted/coated prior to installation.
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70 C/10 SWB 402/TH400/3.73 "The Needy Beast" 200,000 Mile Club Disc Brake Club Owner installed options: Front Sway Bar Power Steering Power Brakes Cigar Lighter Courtesy Lights Deluxe Side Markers Wiper Delay Power windows Power Locks Sniper EFI 2015 Silverado 1500 LS 4.3/6L80/3.23 lowered 2" front & rear |
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#16 |
Registered User
Join Date: Jul 2016
Location: Newport Heights, CA
Posts: 1,000
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Re: Rustoleum high heat ultra
I've had good results by using a heat gun after painting with VHT Flame Proof.
I carefully lay the header on the ground and insert the heat gun tip into the collector and run the heat gun on high for 20-30 minutes. I then let it cool completely and repeat for a total of 3 cycles. Make sure the heat gun is blowing down the tube and is not blowing on the side of the tube, it'll make the paint bubble.
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#17 | |
Registered User
Join Date: Sep 2012
Location: TX
Posts: 1,014
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Re: Rustoleum high heat ultra
Quote:
Have you ever pointed a little IR temperature gun at the header, once it was ready for paint? I'd like to know the actual temp so I know when to stop heating them. |
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#18 |
Senior Member
![]() Join Date: Nov 2013
Location: East Tennessee
Posts: 2,141
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Re: Rustoleum high heat ultra
I'm using manifolds on my LS1 swap....new take offs....gonna glass bead and paint
Here's what VHT recommended....process as specified on directions... I'm gonna use my gas grill to do the baking process....
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#19 |
Registered User
Join Date: Mar 2006
Location: Latrobe, Pa. 15650
Posts: 344
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Re: Rustoleum high heat ultra
I use white play sand for blasting because it leaves a slightly rough texture where as the glass bead leaves it sort of smooth and polished. I never used the primer or the clear. I always got good results. I'm not saying you don't have to use them. My methods are old school and we are always learning new ways everyday. Let us know how they turn out.
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#20 | |
Senior Member
![]() Join Date: Nov 2013
Location: East Tennessee
Posts: 2,141
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Re: Rustoleum high heat ultra
Quote:
I usually use aluminum oxide media in my cabinet or glass beads....I use blasting sand in my big outdoor blaster... I'm trying to decide if I want to use the heat shields that came on them or grind off all the bosses for the threaded holes and the casting flash and just leave the shield off....the shields are kinda ugly but they might serve some purpose....? .....opinions......? 2010 Camaro manifolds...will be using the "cast iron" color paint
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