engine bay paint question
10-14-2006, 10:50 PM
#1
1.5 BAR
Thread Starter
Join Date: Oct 2006
Posts: 1,147
engine bay paint question
I was wondering if spraying my engine bay black would suck a little heat from the engine.
or if it would keep more heat in the engine bay.
I guess this is more of a theoretical question.
just wanted to know what every one thinks.
or if it would keep more heat in the engine bay.
I guess this is more of a theoretical question.
just wanted to know what every one thinks.
10-15-2006, 06:05 AM
#4
1.5 BAR
Thread Starter
Join Date: Oct 2006
Posts: 1,147
Re: engine bay paint question
hey DMC1 I think you should stop sucking your boy friends **** for long enough to catch a breath.
like I sead this is a theoretical question and I thought you guys might have something interesting to say.
but when I get the response I think Boo Radley fucked you in the *** it shows me one thing.
YOU ARE A FUCKEN MORON !
yes I know most likely it wont do any thing and yes I know what the rad is for.
thats why this was a theoretical question.
black absorbs heat so technically it should suck some heat out of the engine (not a noticeable amount)
but then if the engine bay gets hotter wouldnt it keep more heat in it, there for making the engine run a little hotter (again not a noticeable amount)
so unless you got something interesting to say shut your trap.
like I sead this is a theoretical question and I thought you guys might have something interesting to say.
but when I get the response I think Boo Radley fucked you in the *** it shows me one thing.
YOU ARE A FUCKEN MORON !
yes I know most likely it wont do any thing and yes I know what the rad is for.
thats why this was a theoretical question.
black absorbs heat so technically it should suck some heat out of the engine (not a noticeable amount)
but then if the engine bay gets hotter wouldnt it keep more heat in it, there for making the engine run a little hotter (again not a noticeable amount)
so unless you got something interesting to say shut your trap.
10-15-2006, 08:03 AM
#6
Guest
Posts: n/a
Re: engine bay paint question
Originally Posted by 2point2
I'm pretty sure that the colour black vs temperature is only affected by UV light. Otherwise the popular colour for laptops would be white, not black.
tremclad semigloss.
tremclad semigloss.
the color black itself won't really affect anything in the engine bay. black just doesn't reflect as much light away from itself as other colors.
When you close the hood your engine bay is dark unless your hood light stays on and that kind of like the light in the refrigorator question. noone knows the answer to that.
if you want to get all theoretical make up some real sweat heat sinks and attach them to your block and head then make up some type of ram air duct work and run it over the heatsinks. Have you ever seen some of those all motor v8 dyno competitions? those guy put a big old heat sink between their carb and the head.
so on an import you could put one between the throttle body and the intake manifold or between the intake manifold and the head.
or between your pink ***** and your ***, stop naming yourself after closet **** in old moveis. / emo *** bands
10-15-2006, 09:01 AM
#8
0.0 BAR
Join Date: Feb 2005
Posts: 0
Re: engine bay paint question
having black paint next to a warm object isn't going to suck the heat in. Although black paint tends to absorb heat, it has no heat vaccume effect. That object (the engine) has to radiate the heat, through diffusion of thermal energy. Heat, on its own, is always going to diffuse and create an equilibrium unless more energy is being put into the system (which in a car, it is). All you would be doing by painting your engine bay black, would be slowing down the transfer of thermal radiation through your hood/bay. Creating a heat trap inside the engine bay, the thermal radiation is going to diffuse, but now at a much slower rate.
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In thermal science, heat transfer is the passage of thermal energy from a hot to a cold body. When a physical body, e.g. an object or fluid, is at a different temperature than its surroundings or another body, transfer of thermal energy, also known as heat transfer, occurs in such a way that the body and the surroundings reach thermal equilibrium. Heat transfer always occurs from a hot body to a cold one, a result of the second law of thermodynamics. Transfer of thermal energy occurs mainly through conduction, convection or radiation. Heat transfer can never be stopped; it can only be slowed down.
Jump to: navigation, search
In thermal science, heat transfer is the passage of thermal energy from a hot to a cold body. When a physical body, e.g. an object or fluid, is at a different temperature than its surroundings or another body, transfer of thermal energy, also known as heat transfer, occurs in such a way that the body and the surroundings reach thermal equilibrium. Heat transfer always occurs from a hot body to a cold one, a result of the second law of thermodynamics. Transfer of thermal energy occurs mainly through conduction, convection or radiation. Heat transfer can never be stopped; it can only be slowed down.
