Mo' better flo" question...

Started by Rayvyn, May 25, 2007, 09:32:01 PM

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Rayvyn

Is it advisable to paint a radiator? I want to touch up the front of it with a can of gloss black spray paint. Will this hurt the radiator or cause blockage in the fins and possibly limiting the cooling?
Never had the need to paint one before, that's why I thought I'd better ask... :D
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Bryan,

Go for it. That said, someone will probably tell you exactly how much loss of cooling you will experience. I been painting them will Krylon semi-gloss black for many years and  don't believe there is any significant degadation in cooling.

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river1

as long as you don't put it on too thick, i think the negligible loss (if any) in cooling will be offset by the properties of black being able to release heat faster.

that said, has anyone ever anodized an aluminum radiator?

later jim
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EMSjunkie

I think you would be safe.
every time I have ever had one repaired, it came back with a shiny new coat of paint. :-o

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UGLY OLDS

Go for it but only use "rattle can paint " & dont load it up...The paint used by radiator shops is very thin & watery...Much like the "chassis black" used by the OEMS...Its more for "visual effect" than protection.....
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40

Seems like I've seen paint specifically designed for rads advertised.....Eastwood,I think. I agree with the above....the difference between the "Special" paint and regular "Bomb Can Paint" is probably negligible.
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kb426

In the 60's, I worked in a body/radiator shop after school. I was always told that you had to use the special radiator paint or it could lead to overheating. Every brass radiator I've owned has had black paint from the factory. I personally can't verify is there's anything to this. I did have a friend who took his radiator to a shop when he had problems and they said it had the wrong paint on it. They boiled it and it came back with black paint. ???
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enjenjo

Radiator paint has a bituminous base, and is very thin. as long as you don't put a lot of coats of regular paint on, it shouldn't be a problem.
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CQQL33

It is O.K. to paint the radiator BLACK.   Black actually radiates heat better than any other color (provided the ambiant temperature is lower than painted object).    I have the finned portion of my aluminum radiator painted flat black and have been driving this way for 10 years without any concerns.    In fact, I believe it adds the cooling process.    The radiator is mounted in my 33 Ford coupe and did not look right before I painted it.   As mentioned, do not lay down a heavy coat, thin the paint and it will work.  :D  :D

ProEnfo

Quote from: "river1"has anyone ever anodized an aluminum radiator?

later jim

I have a friend that anodized his on a car with an open engine bay, the anodizing exposed to direct sunlight faded/weathered  much like an exposed AN fitting does after a couple of years..

CC