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The Terminator
Driveline
LPW "Pro Series" Differential Cover
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<blockquote data-quote="SlowSVT" data-source="post: 10601754" data-attributes="member: 20202"><p>Not sure where you are getting this information from perhaps you can post it. Powder coat is a polymer coating that lays on the surface about .007 - .010 and is not as efficient at transferring the heat as the bare metal. When I design an electronic enclosure that's uses the chassis surface area to conduct heat away from the interior (which is always aluminum) the last thing I want to do is powder coat it. Even anodize creates a pours barrier between the substrate and the cooling air need to couple the heat. In that case I just iridite (chem film) the surface but bare aluminum is the best for transferring the heat (a coarse sand blasted or cast finish is even better and can double the surface area compared to a polished one). </p><p></p><p>If someone is more concerned with the appearance of the diff cover buried under the car that is their choice. The diff gets very hot and I am more concerned with heat build-up and want to maximize the heat transfer capability of the aluminum cover. The hotter it gets the greater the heat dissipation capacity will become.</p></blockquote><p></p>
[QUOTE="SlowSVT, post: 10601754, member: 20202"] Not sure where you are getting this information from perhaps you can post it. Powder coat is a polymer coating that lays on the surface about .007 - .010 and is not as efficient at transferring the heat as the bare metal. When I design an electronic enclosure that's uses the chassis surface area to conduct heat away from the interior (which is always aluminum) the last thing I want to do is powder coat it. Even anodize creates a pours barrier between the substrate and the cooling air need to couple the heat. In that case I just iridite (chem film) the surface but bare aluminum is the best for transferring the heat (a coarse sand blasted or cast finish is even better and can double the surface area compared to a polished one). If someone is more concerned with the appearance of the diff cover buried under the car that is their choice. The diff gets very hot and I am more concerned with heat build-up and want to maximize the heat transfer capability of the aluminum cover. The hotter it gets the greater the heat dissipation capacity will become. [/QUOTE]
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