Painted my block
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Cargo Master
Joined: May 2011
Posts: 2,387
Likes: 138
From: Northern California
Painted my block
After getting it back from the machine shop, I decided the best first step would be to seal it up so it doesnt corrode. I chose Some high temp BBQ black as it doesnt require primer and it has the heat tolerance I need; it was half the price of engine enamel also. The can says its good for automotive applications. It dried to a flat dark grey color that isnt far off from the color of the cast iron. Not flashy but thats not what I am going for; just want to keep it from rusting.
Senior User
Joined: Jul 2012
Posts: 210
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From: Peine, Germany
Looks good.
I did a similiar thing:
I also used oven paint - but only on my transmission.
The Block I left untouched -> yet
But the Heads I painted with metal protective paint (to apply with a brush)
There is nothing said of heat resistance, but here it is often used as Brake-Caliper-Paint.
So I figuted: If it can take the Heat of a Brake, why shouldn't take it the heat of an Engine.
It works, bud doesn't look that good as sprayed on paint.
As a degreasant I usually use benzine.
Earlier I used brake cleaner, but benzine is cheaper and works just as well
I did a similiar thing:
I also used oven paint - but only on my transmission.
The Block I left untouched -> yet
But the Heads I painted with metal protective paint (to apply with a brush)
There is nothing said of heat resistance, but here it is often used as Brake-Caliper-Paint.
So I figuted: If it can take the Heat of a Brake, why shouldn't take it the heat of an Engine.
It works, bud doesn't look that good as sprayed on paint.
As a degreasant I usually use benzine.
Earlier I used brake cleaner, but benzine is cheaper and works just as well
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Cargo Master
Joined: May 2011
Posts: 2,387
Likes: 138
From: Northern California
I always try to do my homework on each step of this process... Everyone was recommending high temp paint without primer; the can of high temp engine paint recommends primer but I couldnt find an extremely high temp primer. When I looked at the BBQ paint, it specifically advises not to prime. This stuff could probably be used as a primer but I figured it looked good enough for me.
The other concern for me was the heat around the exhaust burning the paint off. I would like to keep the color consistent as possible.
The other concern for me was the heat around the exhaust burning the paint off. I would like to keep the color consistent as possible.
Senior User
Joined: Jul 2012
Posts: 210
Likes: 0
From: Peine, Germany
Normal Primer would burn underneath the heat resistant paint.
There are Heat-Resisting-Primers (like RustOleum.com ), but with oven/grill paint or "direct-on-Rust" Metal protective paint not nescessary.
And don't worry about the Heat from the Headers.
The paint I brushed on is still intact - and as i said: It's no special heat resistant Paint.
There are Heat-Resisting-Primers (like RustOleum.com ), but with oven/grill paint or "direct-on-Rust" Metal protective paint not nescessary.
And don't worry about the Heat from the Headers.
The paint I brushed on is still intact - and as i said: It's no special heat resistant Paint.
Lead Driver
Joined: Aug 2003
Posts: 6,305
Likes: 18
From: Boulder Creek, Ca
Sprayed header with VHT, reportedly contains a ceramic base, and it has held up well. For brackets, pullery, ect., used Zero Rust, selected black, and that stuff is amazing. Painted a few Ford engines in my time, so far, found Pors Ford blue has held up the best, used my small shop compressor and a cheap HF spray gun and gave it a couple coats.
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Cargo Master
Joined: May 2011
Posts: 2,387
Likes: 138
From: Northern California
Por makes really good stuff but I am already way over budget on this and that stuff is pricey. I would definitely recommend going that direction for a show or other quality build. This motor is going to be sitting in the dark depths of a 21' family boat.
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Cargo Master
Joined: May 2007
Posts: 2,071
Likes: 36
From: British Columbia
Engine paint
I've painted a couple items with "high temp" spray paint, but I found that they didn't dry properly until they got really hot. Even after several days it remained chalky and would rub off. So I carefully heated the parts over a propane heater to bake the paint. I don't recall the brand of paint.
Your engine shouldn't get hotter than about 220 F.
I would assume that name brand engine enamel is designed to work at this engine temperature.
Your engine shouldn't get hotter than about 220 F.
I would assume that name brand engine enamel is designed to work at this engine temperature.
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Cargo Master
Joined: May 2011
Posts: 2,387
Likes: 138
From: Northern California
Regular paints are good up to 300° or so; at least according to a body and paint supply store. The problem I have seen is right around the exhaust ports on the heads which can get a bit hotter causing discoloration.
Cargo Master
Joined: May 2007
Posts: 2,071
Likes: 36
From: British Columbia
Paint
Crazy, you are right, they do get scorched there eventually. Also on the exhaust crossover on the intake manifold.
So if the high temp paint will "cook" properly on the rest of the engine, it should be better. Time will tell.
So if the high temp paint will "cook" properly on the rest of the engine, it should be better. Time will tell.
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Cargo Master
Joined: May 2011
Posts: 2,387
Likes: 138
From: Northern California
I painted one head... There is more masking on these than the block it seems although I may be doing more than whats needed. This paint dries to a really light flat grey. Almost cant tell its painted.
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