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heat in an engine bay
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Fri, 27 September 2002 11:47
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hey fellas
First i'll say sorry mods that this is probably in the wrong forum section, i just want to reach the largest audience 
The point is, i would like to get the car resprayed black. i understand the implications of jet black paint (must replace all panels that aren't perfect, have headlights on most of the time etc) but am wondering about it's heat absorbing/reflective qualities in the engine bay. For instance, will it absorb heat and peel, or will it make the entire engine bay hotter? Perhaps i should leave the original grey in the bay? Then it looks crap though...
Opinions please!!
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: heat in an engine bay
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Fri, 27 September 2002 12:10
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I dont think that black paint in the engine bay would absorb heat from the engine anymore than any other colour! Black paint only really absorbs the harsh reflections from the sun!
The only thing I can think of is that it make the engine bay much darker making it rather difficult to do some work on the engine!
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Registered:
May 2002
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Re: heat in an engine bay
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Sat, 28 September 2002 08:28
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I think the only prob may be the extra heat that the bonnet will absorb from the sun. Heat radiating from the engine should be any different as dark colours only absorb heat from light energy. (you know, the spectrum and all that shit...)
Tim.
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Re: heat in an engine bay
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Sat, 28 September 2002 10:12
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thanks for those answers guys
i'm just obsessing about keepin the engine cool (as possible), within a decent budget.
i'd thought of lots of things, but never the fact that a black bonnet will absorb heaps of heat from the sun 
stupid me
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Location:
Rocky Mountains, Canada
Registered:
May 2002
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Location:
Finland
Registered:
June 2002
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Re: heat in an engine bay
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Sat, 28 September 2002 18:20
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MWP has it right.
I haven't tested this but I've been told to try this out. Freeze water in milk cartons. One painted white, another black. When solid ice - take them out to melt. Black one will melt first.
What puzzles me is that Techline's Black Satin ceramic exhaust header coating (which will radically cut radiated heat) is actually black in colour.
Wonders never cease.
-A.
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Location:
Eskilstuna, Sweden
Registered:
May 2002
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Registered:
May 2002
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Re: heat in an engine bay
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Sun, 29 September 2002 05:59
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I often wondered why radiators were painted black... Why then are intercoolers silver?
Also, if radiator places paint a radiator black...won't that have no effect because the heat in the water is inside the radiator where it is still (most probably) rust or copper coloured?
Tim.
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: heat in an engine bay
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Sun, 29 September 2002 07:07
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Most all the new/better radiators are not black at all! Check out http://www.are.com.au/ Lots of useful info about this on there!
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Location:
Sydney
Registered:
June 2002
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Re: heat in an engine bay
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Tue, 01 October 2002 15:01
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would it really matter what colour the car is aslon as the air intake and oil are cooled? i dont think it wold matter much if the engine bay was painted black. the engine and turbo and extracor radiates the heat. the only problem i see is heat form sunlight which would probably be minute compared to exhaust thermal properties. i'm no scientist but i think paint colour wouldnt madda if u have a cold air induction box and engine/transmition oil cooler in the right places.
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Re: heat in an engine bay
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Wed, 02 October 2002 11:49
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cool1, at work our genuine new ford radiators are all black - how ironic
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: heat in an engine bay
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Wed, 02 October 2002 12:02
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And your point being?
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I supported Toymods
Location:
Perth
Registered:
May 2002
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Re: heat in an engine bay
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Wed, 02 October 2002 12:04
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How funny is that, just reading the ARE site. Most companies had switched to aluminium radiators and plastic tanks in the early 80's...Ford only did in 1998
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I supported Toymods
Banned User
Location:
Brisbane
Registered:
May 2002
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Re: heat in an engine bay
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Wed, 02 October 2002 12:06
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I spose to keep the price down they eventually had to fit the cheaper crap!
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Re: heat in an engine bay
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Wed, 02 October 2002 12:11
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btw thanks again for the suggestions guys!
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Registered:
May 2002
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Re: heat in an engine bay
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Fri, 04 October 2002 12:54
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dood dont worry so much bout the engine bay... if u paint ur car black... the interior will be hotass in summer.. thats worse than a hot engine bay !!!!!
shit i dint think of that.. im painting my car black too..
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