01-11-2011, 07:16 PM
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Senior Club Cobra Member
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Join Date: Jun 1999
Location: Fallbrook, CA USA,
CA
Cobra Make, Engine: Porsche 928 S4
Posts: 739
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Not Ranked
Machiavelli.
The stainless being stainless, (depending on the alloy) would not rust on the inside.
Therefore you could certainly just coat the outside.
The side-pipe design with the dead air space should work fairly well as the thermal conductivity of Air is 0.024 k - (W/mK). However where the outer skin is welded to the inner tube you are going to get significant heat transfer.
In other words hot spots at those locations.
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