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      09-21-2011, 05:22 PM   #12
Papethova
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Drives: '08 135/ '11 1M
Join Date: Oct 2007
Location: at Death Valley 127

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Quote:
Originally Posted by nachob View Post
Hood insulation keeps heat in, without, the hood can radiate more heat away from engine, radiator, intercooler and oil cooler. It is basically a blanket over the engine. Heat rises so letting warm air radiate off the hood can help a bit. If you put a blanket there, it has nowhere to go except down which is opposite of convection currents.
BUT the insulation would insulate the hood itself from the heat. Ill have to check my 135, but it makes sense the hood would be cooler if insulated.
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