Douglas Fir wrote:

Hi Paul,

Now here is crazy idea. Please tell me what you think.  Awhile back there
was lots of discussion on the merits of P ports and  how well they breath.
Instead of one large P port wouldn't 4 holes side by side work better?  The
area of a 38mm dia. port is 1134.12 mm2. That would be four holes would be
be about 19mm in diameter.  Velocity and shear force would increase.
Dispersion of fuel might be better.  Port opening time would be shorter.
Manifold would have to specially made.  In your opinion would it be worth
the test?  The series of holes would be like a wide Bridge Port.

Doug in Japan

You never know. Might work fine. I think Mazda tried that with
the exhaust ports at one time. Here is a picture I took at Hayes
Rotary engineering recently.

Paul Lamar
 
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