polishing intake runners worthwhile? & bosch high psi/highvol. pump

[Ludis Langens]

Ross Corrigan wrote:
> 
> I've also queried to no definite answer other sources on the following. I
> figure polishing or just 'smoothing' (ie. not getting a full blown polish
> finish) on the inside of my Victor Jr. runners/EFI intake may 'slightly'
> enhance airflow by reducing turbulence along the rough 'as is' surface AND
> reduce the heat the intake radiates to my incoming air keeping it denser
> and thus more efficient/more power (slight I'd guess but worth a few hours
> of sanding/burnishing by hand or with an appropriate bit in my die
> grinder?).  comments/ideers?

Books that I've read say that the turbulence _increases_ airflow -
something about a smooth surface causes lamular flow along the surfaces
(with a dead spot in middle of the runner), while a rough surface causes
the whole runner cross section to be used.

-- 
Ludis Langens                               ludis (at) cruzers (dot) com
Mac, Fiero, & engine controller goodies:  http://www.cruzers.com/~ludis/


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