Purpose of painting an Engine Block?

4G-KDMP · Mar 14, 2007

Black1987Stang said:
the block gets as hot as what thermostat you're using, give or take some, some spots will be hotter than others like right around the cylinders.

so with a 185 thermostat your block only get 185..... give or that a few spots then?
i ask because everyone always talks about using hi temp paint when they paint there upper intake which i would think would be less in temp than the engine block because of it being higher [less heat]and its aluinum.

Black1987Stang · Mar 14, 2007

4G-KDMP said:
so with a 185 thermostat your block only get 185..... give or that a few spots then?
i ask because everyone always talks about using hi temp paint when they paint there upper intake which i would think would be less in temp than the engine block because of it being higher [less heat]and its aluinum.

I dont no this for a fact about the temp of the block but makes sense dont it?

I've used engine heat paint primer and black on my upper and lower, then used a normal indoor/outdoor paint (metallic) on top of that and after 13k miles the paint is still fine, no bubbles or peeling. I used regular engine enamel heat paint for my block, Ford Blue ..........I would use heat paint on anything that gets hot from the engine just since it's made to handle the heat, better than using normal paint and risk having it bubble or peel off or something

MikeC · Mar 14, 2007

The bolck will be much hotter that the coolant temp. It's not unusual for the oil temp to get near 300 F. Heads and around the cylinders will get up inthe hundreds of degrees F.

stang&2Birds · Mar 15, 2007

A well applied layer of paint or powder-coating will also allow you to clean grim off the block, heads, valves covers. That prevents hot spots (not by much), makes it *easier and cleaner* to work on the engine, and makes it easier to see WHEN/where those 5.0 leaks happen near the POS gaskets.

Boss 351 · Mar 15, 2007

4G-KDMP said:
so with a 185 thermostat your block only get 185..... give or that a few spots then?
i ask because everyone always talks about using hi temp paint when they paint there upper intake which i would think would be less in temp than the engine block because of it being higher [less heat]and its aluinum.

I never used high heat paint for the upper intake or valve covers, no problems either. The only main advantage to using engine paint for those parts is the resistance to oil... But you get nicer colors with reg. paint I painted mine a dark metallic blue.

caseywan · Mar 15, 2007

Boss 351 said:
I never used high heat paint for the upper intake or valve covers, no problems either. The only main advantage to using engine paint for those parts is the resistance to oil... But you get nicer colors with reg. paint I painted mine a dark metallic blue.

Got any pics of yours, I'd like to see it. I'm trying to decide what color to powder coat my block and I've never really been a fan of Ford Blue painted blocks.

LxVert · Mar 15, 2007

caseywan said:
I am powdercoating mine, awesome finish and it will never dull, chip, fade, etc. I always thought it would be a fortune to powdercoat a block, but I found a really good local shop that will do it for $200.

Actually after a while the powder will dull out, because of the heating and cooling of the block. $200 is that with the company completely preping the block ( cleaning, masking)before paint?

85_SS_302_Coupe · Mar 15, 2007

I always figured if you're going to pull an engine out, why not clean things up while you're at it? At the very lease, with a clean degreased and painted engine, you'll be able to pick up and identify oil leaks better (which is why i would stay away from black paint for engines).

caseywan · Mar 15, 2007

LxVert said:
Actually after a while the powder will dull out, because of the heating and cooling of the block. $200 is that with the company completely preping the block ( cleaning, masking)before paint?

Actually, powdercoating will only dull with heating and cooling if it does not have a clear powder coat on top. Some shops don't use the clear overtop, which makes the color fade, but if they clear powder coat it it won't fade.

Yep, that's $200 total including everything.

LxVert · Mar 15, 2007

Wow 200 thats a good price, I powder coat for a living and the price at my company is higher for doing a block

Purpose of painting an Engine Block?

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Purpose of painting an Engine Block?

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