RE: Flow figures

[Dave Walters <whdavid@xxxxxxxxx>]

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Robert neal zimmerman wrote:
> 
>    Talking of heads, in this book by David vizard i am reading he talks
>    about how iron heads actually make more power because of the thermal
>    efficiency, that is aluminum heads conduct heat better than iron, so
>    they suck heat from the combustion chamber instead of leaving it on
>    top of the piston and in the combustion chamber where it belongs .
>    Just like  thermal coatings, they  help keep heat in the chamber ,
>    and an iron head will too.  
>    Now that would of course  be identically shaped and valved heads,
>    iron vs. aluminum.
>    I never would of thought of that- pretty smart for a Chevy guy!
>      Neal Zimmerman, Eugene Oregon

That's why you build the engine with 1 more point of mech. 
compression,to compensate for the loss of power in an aluminum head.

 
  Dave Walters
  Denver, Co.
  

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