need a new hood liner and have 2 to choose from
02-09-2007 | 11:37 AM
#17
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02-09-2007 | 01:28 PM
#19
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From: Mid Michigan
Originally Posted by shiners780
Works on the same principle as this:
http://kalecoauto.com/index.php?mai...&products_id=35
http://kalecoauto.com/index.php?mai...&products_id=35
"...I highly recommend this double-mod as an essential equipment when performance tuning your car withor without running pure quad-filtered and distilled ionized mountains spring water with pure copper shavings to increase longevity and thermal heat transfer..."
02-09-2007 | 08:33 PM
#21
Drifting
Joined: Nov 2003
Posts: 2,273
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From: Northern Colorado
Originally Posted by alordofchaos
Not to bag on 928leather, but it says:
1) insulates the hood, keeps the top cool
2) does not reflect heat back down toward the intake
So where does the heat go? I'm curious as to how this works.
Never really thought about engine compartment heat before, but it seems to me that the hood really needs some kind of ventilation at the top for cooling.
1) insulates the hood, keeps the top cool
2) does not reflect heat back down toward the intake
So where does the heat go? I'm curious as to how this works.
Never really thought about engine compartment heat before, but it seems to me that the hood really needs some kind of ventilation at the top for cooling.
What heat does get through is more readily dissipated on the other side. So the engine bay side will be at engine bay temperatures, much as the inside of your thermos is at coffee temperatures. The outside of the bay will be close to room temperature, much as you dont burn your hand when you grab the thermos.
Where did the heat go? Nowhere, it stayed on the other side of the hood.
02-09-2007 | 08:59 PM
#22
Hey Man
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From: Nor Cal, Seal Rock, OR
Originally Posted by patrat
It works the same as your thermos bottle, it insulates the heat. Insulation impedes the transmission of heat, so less heat energy can get through. (Say, 20 watts per square meter rather than 100 watts per square meter).
What heat does get through is more readily dissipated on the other side. So the engine bay side will be at engine bay temperatures, much as the inside of your thermos is at coffee temperatures. The outside of the bay will be close to room temperature, much as you dont burn your hand when you grab the thermos.
Where did the heat go? Nowhere, it stayed on the other side of the hood.
What heat does get through is more readily dissipated on the other side. So the engine bay side will be at engine bay temperatures, much as the inside of your thermos is at coffee temperatures. The outside of the bay will be close to room temperature, much as you dont burn your hand when you grab the thermos.
Where did the heat go? Nowhere, it stayed on the other side of the hood.
02-10-2007 | 12:17 PM
#23
Drifting
Joined: Nov 2003
Posts: 2,273
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From: Northern Colorado
Originally Posted by KuHL 951
Then you are saying the temps under the hood will be the same as if no insulation is there? If the heat barrier is blocking transmission through the outer metal then more heat is left in the engine bay than without a barrier. It might not literally 'reflect' heat back but it sure doesn't transmit as much either through the hood as an unlined hood. The effect is the same, higher under hood temps, you can't have it both ways.
