The difference in heat radiation from the block is
minimal compared with the heat energy transferred via
the coolant.
But given the extreme heat generated by the exhaust
system, which is adjacent to the block, perhaps we
should be concerned with the heat absorbtion
characteristics of the paint. Wouldn't a high
reflectivity paint actually lower the engine temp by
reflecting the exhaust heat away?
The best of both worlds:
Paint the engine silver on the exhaust side, and black
on the other side.
--- nikolai jaremka <njaremka@yahoo.com> wrote:
>
>
> well, simply put, the lighter the color the less
> radiative
> properties an object has. if you paint your engine
> block and
> head a lighter color, it will hold heat and not want
> to expel it
> very easily. the engine will then rely solely on
> the radiator
> to get rid of it's heat.
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