George Lendich wrote:

Paul,
A Little while ago I did check the area of the openings of the Inlet
manifold
compared to the Inlet tubes areas and found the tubes to 18 percent

larger

 than the Manifold openings. Now I would assume it would give some leeway
in regard to any pressure drop.
George (down under)

I don't follow you George.

"openings of the Inlet  manifold " ????

Paul Lamar

Paul,
Sorry, the actual engine ports were 18 percent less area than the tubes,
you know the other end of the manifold !
These figures were taken from the info/drawings given with the exercise
to have the lower manifold cast - the one still in progress.
George (down under)

A lot of people open up the ports including Bruce Turrentine that
built Tracy's engine. Ed Anderson also ported his engine. Probably
others but those I know about for sure.

Paul Lamar
 
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