Painting intake tubes, Does color make a difference? Options

[rhodyguy]

non oem intake gaskets for 1.7/1.8. pelican, 022 129 707F, $8.75.

k

[Johny Blackstain]

Umm, didn't Harley go to Porsche & have them redesign their engine because Porsche was good/experienced at converting air cooled engines to water cooled? I would think that would say enough about if they know how to cool something the right way or not.

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[rhodyguy]

if one wanted to go to the exspense of having the runners thermal barrier coated, i don't think it would hurt. about the same price as powdercoating.

k

[brer]

Nobody is saying to paint your aluminum cylinders Brian.

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A good designer considers every decision no matter how trivial.
But then again, maybe they picked black because its sophisticated and elegant.

Gray does look cool in that spot too.

[jaminM3]

Ya think maybe harley did it for asthetic reasons?

I think everyone is overthinking this. It won't make a measurable difference. The airflow and materials are more important.

Just paint the $*(#$% runners any *$%& color you want... (IMG:style_emoticons/default/mad.gif) (IMG:style_emoticons/default/wacko.gif)

[por73914]

(IMG:style_emoticons/default/agree.gif) Just put some paint on there and let us know how it goes (IMG:style_emoticons/default/clap56.gif)

[brer]

you guys are ruining the fun by making it simple.

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[por73914]

(IMG:style_emoticons/default/chair.gif) How about gold leaf like the F1 (IMG:style_emoticons/default/laugh.gif) Hows that for not so simple?

[brer]

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[Brian Mifsud]

A good designer considers every decision no matter how trivial.

Yes, if given unlimited freedom, $, and time. A good employer (i.e. somebody who is trying to make money ((Like Porsche)), will hold a gun to that designer's head with the instructions to get the most bang for the buck, and get on with it.

If the color of mechanical components contributed to a significant heat transfer such that efficiency was improved, they would have done it. If it had, we would all be running around with black cylinder heads as they are the achilles heal thermally to these engines.

Okay, I'm done, I'm puting it back into my pants and zipping up!

P.S. I do like the color "machine grey" for intake pipes. They can get dirty and it isn't as noticeable as it would be if it were a light.

[BiG bOgGs]

Come on guys! Quit it with the IF IT WORKED it would be done stuff.

IF marketing didn't work, we would do things on what is best, not what is popular.

Just try different paints and see what the results say.

[flesburg]

I am not an engineer, let alone one who understands thermal stuff,

But in a book I read about Dr. Porsche, he designed an air cooled diesel engine for a tank. He chose air cooled rather than water cooled because it suffered less power loss as it gained temperature and was more consistent in output, AND he could ENCLOSE it in armor. He said he could not do that with a liguid cooled engine for several reasons. I cannot remember them all but one had to do with the location of the water radiator which HAD to have airflow, and another was its variation in efficiency as it heated and cooled with a constantly cycling flow of water of a constantly cycling temperature.

In other words, and air cooled engine could be designed to operate in an enclosed box, or nearly enclosed box and it would somehow reach equilibrium and operate efficiently. He never did say the color of the paint on the tank had any effect.

Come on all of you thermal engineers, tell us we can paint our intake runners red if we want to....without any reason to worry.