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Originally Posted by killernoodle
Normally, when you paint a radiator the paint doesnt penetrate deep into the core. The inside of the core is what cools the water. If you look inside a standard heatercore you wil notice that there are actually thousands of pins that go between the tubes rather than a zig-zag sheet of copper. This increases surface area and turbulence in the rad. So basically, painting the outside will have very little to do with temps.
Powder coating, however, completely covers the entire area, correct? This would be bad.
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well, i'm looking at, for instance, a black ice:
http://www.dangerden.com/mall/Radiators/hwlabs.asp
so what youre saying is, its just the edge of the fins that are painted? i'm wondering how I can accomplish that for my friend. for myself I have a big shroud I'm going to try to mount to the top of my case (assuming I can power two 48v fans that put out 50db each...with 200 CFM each
)