They also make a hi temp manifold paint that you bake on which seems good so far, a chassis black which I wasnt impressed with, and a tough coat anti chip paint I forgot the name of which works well.

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60 TR3A (red), 62 TR3B project, 72 TR6, 69 Mk3 Spitfire EU setup
https://spitfiremk3.wordpress.com

I cleaned and painted mine. I thought everybody did that.

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'S all for now
Vic

This.

If done properly, POR15 engine paint is very good. We painted the block and head of my ex's Volvo B20 and nearly 15 years later it still looks great. But as mentioned above, you have to follow the directions to the letter and it is not a project for the impatient. We had the engine out of the car on a stand in her heated sunroom over the winter. The whole process took about a month of after-work sessions.

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"Lisle" - '72 GT6 basically stock and original. For now... T-9 conversion pending.
"Winnie the Poo" - '79 Spitfire 1500. Rubber to chrome bumper conversion, otherwise stock at the moment.

Just a question about engine paint? I see on the custom auto shows that they sometimes spray the engine with the same color that the car is. They use the same spray gun they spray the car with. My question, is it just auto paint? Do they add an additive in? Is it a special mix from the paint store? I would think that just regular auto paint would just burn off.

+1 for vht rattle can.
I did gunk>pressure wash>wire wheel grinder> brake cleaner>kurust>vht matt Black on the block, head and exhaust manifold.

Held up for at least 30 miles so far!

Has anyone tried Motor Coater?

The outer surface of a motor does not see high temperatures, expect 250F max.
Exhaust manifolds and headers are a different story.

Carter I think it's probably well above that. Hot exhaust at the far end of the tailpipe can be close to boiling so any radiated heat from the header, even if coated, against that side of the block has to be much higher. Maybe POR-15 handles oils and expansion cycles over time better than others.

Mebbe so, mebbe not … an IR temp gun can easily capture approximate readings to eliminate our speculation.

Fuel percolation from radiated exhaust heat is an issue, but occurs well below 250F.

Even if you guestimate +100F on surfaces near the exhaust, that's still 350F.

I was an industrial painter, our finishes, lacquer, enamel, epoxy, all baked at those temperatures.

The manifold side of my block is painted with whatever leftover black cheapo spray paint I happened to have at hand. That was in 2015, no problems yet.

BBQ Grill paint from Home Depot/Loews/etc