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Painting engine block with vht??

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WhiteTalon007

Probationary Member
24
3
Feb 15, 2017
Africa, Alabama
So I have a bare block that im about to wire brush but I want to do it the best way I can. I know to tape it off and not wire brush any of the mating surfaces. I heard about baking the block since some paints call for that but I dont know if the block will fit in my oven LOL so I heard about boiling water and then putting the can of vht paint in it and then paint the block. I already got the paint, it says flame proof header paint and something about silica and ceramic coating. I bought it to do the valve cover and maybe the calipers. Its silver so i figured i could do the block incase i ever have an oil leak, it will be easier to notice than painting it black.
 
Yeah, don't put your engine block into your oven as due to weight, it'll warp your oven racks, and potentially break something. I say it doesn't matter if the paint claims to be flame proof, or anything else. Look for paint that has a temperature range for the paint to withstand. Boiling the paint can is bull$h!t since all paints state in the warning section "Keep away from heat sources". Whoever told you that is an idiot, or is intentionally trying to get you hurt. Paint cans are under pressure (I'm sure you know that), and boiling them can add more pressure since you're heating a compressed gas. Not a good outcome if it explodes...
 
You will have no problems painting the block under normal procedure. People have been doing it for decades.
Make sure it is clean and free from oil and grease, and spray away.

That paint is actually overkill, your engine will never see 1300-2000 degrees.
 
I should have said it a little clearer. You bring water to a boil, then turn the heat source off which immediately stops the water from boiling and then place the paint can in the center. So youre not technically putting it in boiling water. Its not going to explode at those temps. It cools down to room temp in 3-5 min so you would use it just before that time. Flame proof is just what it says on the can which is referring to the temp range it can withstand, i didnt mean it was literally flame proof.. Im sure a lot of people have heard of vht flame proof paint.

Ive heard of many people painting their blocks and having it chip and flake off using high temp paint so thats why i asked. I know of a few ppl and read about plenty more that degreased the fu$@ out of the block and did everything right to prep it and still have flaking and peeling so thats why i asked about heating the paint and baking the block.
 
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Still, heating up the paint can does nothing to the paint except warm it up. It does not change the paint properties or how it's sprayed on. It only makes it spray as easy as it would at normal room temp. If you did this with paint that is not meant for high heat, it would still be not meant for high heat after sitting in hot water.
 
The reason paint chips and flakes off all has to do with prep work. If you properly prep the block and make sure there is absolutely zero dirt, oil, grease, and fuel. Then scuff with scotch brite pad then prime it wait the proper amount of time for primer to cure then scuff with 600 grit sand paper then paint and let cure for for the time that the can states it doesn't chip and flake off. Sorry that was a run on sentence xD
 
Flameproof paint on the block??? It will be flat in nature and any fluid on it will show up since it is flat paint.
 
I highly recommend against putting spray can into boiling hot water. but if you do it, at least get a video so we all can learn from it.
Honestly don't know if it'll pop or not.

I spray painted my block and it still looks good, but then it's been parked for awhile now.
 
Directions for baking your block:
Preheat oven to 400 degrees, season block with salt and pepper to taste, place block in shallow baking dish, place block on center rack of oven, baste every 15 minutes with your favorite motor oil, cover with foil after two hours to keep top of block from burning, bake for two hours more or until tender. :D
 
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