adamcheese

Do you think coating your engine bay walls with heat resistant paint would cause a drop in engine temp?

DAVID GRIMES

I am proud to say that I do not think that.

DublyDurty

DAVID GRIMES,

You have a wonderful way with words .



adamcheese,

What would make you think that? Not trying to be funny...just reeeeealy curious.

DD

84RX_Se7en

That would actually insulate the engine bay trapping hot air. Think. You're in a box with springboard walls or YOU RESISTANT WALLS! Now try to get out by running into those walls. You'll bounce right back in.

I mean... it's not going to cause overheating issues but it won't help drop temps.
Using heat absorbent materials will help disipate heat better since they will absorb the heat and channel it outward.

High heat paint is basically heat resistent and is good to help the coat last in the event of overheating or coolant spray from a blown line.

-=DanK=-

Have you seen the Simpsons? I bet SPEED HOLES will help.

DriftFB

this idea would work if the engine and the engine heat was outside the engine bay trying to get in. Instead you're just trapping in heat if anything.

blwfly

iTrader: (4)

it wont keep engine temps down put the paint will hold up better to hot temps thats what its for
i used rattle can high temp paint for my engine bay with a few coats of a decent clear it turned out pretty well

adamcheese

david, the reason why i thought this (but didnt actually think it would make f-all differance) is the same reason you would use exhaust wrap, if its hotter it will work its way out of the engine bay quicker. I was also thinking about lining the bonnet with sound deading foam stuff, you think that could increase running temp a bit?

adamcheese

BLWFLY i notice u have an e-fan, did u have to upgrade ulternator, i was thinking bout getting one till ppl said ill stuff my alternator, maybe ill sell the 2 stock ones i have for a big newbie. Brands/ Prices anyone?!?

DAVID GRIMES

Adam, the exhaust wrap works by insulating the radiant heat from the header into the engine bay. A heat shield could do that as well.

But your question was about the high temp paint in the engine bay dropping engine temp. The heat from the engine would not drop just because you painted anything on the engine bay walls.

There are other ways, but normally you can shield or deflect radiant heat, insulate that which generates or transfers heat, and maintain or improve the flow of air through your radiator and through your engine bay to carry the heat away as you drive the car. The engine bay walls do not generate or transfer heat, so insulating them will have little or no effect on lowering ambient heat in the volume it contains.

SanityAssassin

Tell that to the mclaren f1. ^ ;p