Thread: Crack in My ofh
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Old 05-04-2017, 06:52 PM   #34
Yoshoobaroo
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Quote:
Originally Posted by strat61caster View Post
If you draw a resistor network to calculate the heat transfer rates you will see that coating just the outside traps heat in the metal, you don't even have to know any equations or plug in numbers, it just doesn't allow the metal to reject heat to the engine bay, which is typically the goal, but as a consequence the header saw increased temperatures.

Oh absolutely! No question about the mechanism at work, but depending of the coating performance, how much are we really talking about? If the delta is 50F, that won't do a thing considering running the car hard for long will bring the header temps up hundreds of degrees anyway. If it's 150F it might be a different story. It'd be nice to see come data for us engineering pedants. :P



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