Why black paint?

[Towel Rail]

John Muir recommended painting your tin all different colors, so you'd smile when you had to open the lid to work on it. That stands to make as much of a difference as anything else in this thread.
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1974 Thing -- under the knife
1967 Beetle -- spring/summer/fall driver
1996 Subaru OBW (EJ22, 5-speed, AWD) -- winter car, 3-seasons "don't feel like biking today" car

049 > 070 > 053 > 009

[modok]

Color coding of engine parts is underutilized.
About all we get is different color coils, but so much more could be done!

[rugblaster]

I bet Klaus Winkler would have kicked John Muir's hippie ass!!!
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[[email protected]]

[timcurtis67]

I'm just hoping this subject can get to 10 pages long....
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67 Desert Fox Spoiler

[Lingwendil]

Everyone knows that in order to get the most adequate cooling on an engine, one must choose a solid base color, with additional colors interspersed for the added color-specific benefits that they entail, like this fine gentlemen's tin here-

[vwracerdave]

[Clatter]

I remember years ago, Jake Raby saying how he liked to leave iron barrels to rust a bit.

The theory being that the rust starts getting rough, and maybe even flaky, giving an increase in overall surface area.



Also,
This is entirely a WAG,
But,
Wouldn't -any- paint be an insulator?

If you want your metal, be it iron, aluminum, mag, etc. to shed heat,
Don't coat it in an insulating blanket of paint!
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Bus Motor Build

What’s That Noise?!?

[Max Welton]

[oprn]

Yes paint can definitely be an insulator, that is why a "thin" coat of flat black is always specified. Rust too is an insulator by the way.

[Glenn]

Everyone knows the green engines are not ripe.

And the red ones are the fastest.

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Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"

Member #1009

#BlueSquare

[Splitdog]

And the white ones are racist.....

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CH³NO²

Z = z² + C

Der Blitzkrieg Kafers

#notacallooker

[Onceler]

I think bob Hoover was a black paint propagandist too, but I really don't blame him though. If you're crazy enough to fly using a VW motor, you've got to hold on to some superstitions
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1972 Karmann Ghia

[neil68]

The Kübelwagen, Schwimmwagen, etc, had several engine tin colours: beige, brown, green, grey, etc. Seems like they worked just fine, even in warm environments such as North Africa, etc.

Engine tin directs cool air to the correct locations...can't see how colour can affect that, especially in a closed engine bay. Someone chromed an OEM doghouse shroud years ago (couldn't find the thread) and saw no change in operating temperatures. Seems chrome shrouds got a bad rep mostly due to poor design...not the fact that they were chromed.
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Neil.

Der Kleiner Rennwagens
68 Beetle 2332 cc, 204 WHP
12.5 seconds @ 107 mph
Dynojet Test: https://www.youtube.com/watch?v=M9B_H3eklAo

[fastone]

[anthracitedub]

Yeah, it’ll do better than 10 for sure. We haven’t even touched on paint color of the fan itself... because I heard if you paint the fan a deep shade of blue it creates an extra cooling effect on all incoming air... also if the paint is laid out smooth, no peel... it will have increased air flow.

[DeathBySnuSnu]

I dont know what color my tins are now.
Gave them away 15+ years ago.

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[nextgen]

Very nice Trike !!!!!

That Trike just expanded our exploration!!!!

No cooling tin at all, of any color for 15 years.


Ok so what color pants to you find to be the coolest, the bluejeans, black leather, vs cargo shorts ???? 1st 2nd or 3rd degree burns?????
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[DeathBySnuSnu]

I ride in blue jeans.
The 2110 that was in it ran cool enough to touch solidly.
This is its first summer with the 2387. It does run hotter. You can touch it and/or brush up against the heads and cylinders without getting burned, but it is too warm to leave your hand on like before.
The insides are heat insulating ceramic coated.
The outside of the heads are heat transfer ceramic coated. Supposedly to be a 15%increase in thermal transfer. No real data to back that up.

The headers are what will get you. The exhaust is hot hot, so the pipes are killer. The lightest brush up against will burn you.
So you have to wade through the headers to get on it. I did put wrap and covers over the gotcha parts.

Overall it is less hot to ride than an air cooled harley.......as long as you are moving. But stopped you are trapped between the intakes and can not stick a leg out to get away from the heat.
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