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So i just painted my headers a few weeks back they looked awesome and after the first time letting it run to fill up my new radiator the paint started to bubble and then flake off. I did everything as the instructions said sandblasted, cleaned with reduced kbs cleaner, dried with compressed air, 2 light coats of aerosol primer, waited about 10hrs or more then 2 light coats of pure white, baked in a welding rod oven at 350 for half hour. I even took the precaution of letting them sit for a week before i put them on the motor and only ran it for a few seconds 2 or three times to give it a good heat cycle before i actually ran it. Primer looks fine under the paint, should i have scuffed the primer? I included a before picture and will take a picture later of what it looks like now.
“Restoring a 1929 Chevrolet 4 Door International with a first Generation 194 cu 6 Cylinder Engine. I blasted the Exhaust manifold, then cleaned and prepped it to remove any debris and oil. primed following instructions, 2 coats. Then top coated with the XTC 2 Coats, then Cured it per instructions. It came out better then expected. I am really happy!” -Jerry A. XTC: https://www.kbs-coatings.com/XTC.html XTC Primer: https://www.kbs-coatings.com/XTC-Primer.html
I put 2 coats of XTC primer and then 2 coats of XTC high temp paint (stainless steel) on my longtube headers. I recently seen that I need to bake them for 30 minutes to cure? Is that true, or do i not necessarily need to do that?