Intake Cross-section 1st two are the same port just different side of the cut, one has valve seat in it the other doesn't, last 2 are it's relation to the Exhaust port.

Eagle Head Al.jpgEagle Head Ala.jpgEagle Head Am.jpgEagle Head An.jpg
Truth has no agenda, but those with an agenda make their own truth.
Some of us are so open minded they only see their View