OK, engine guys - at any given point "snapshot" in time, how many intake valves open at once?
Asking because to determine narrowest point in intake from a flow crossectional area. I am calculating the flow area of 1 32mm intake valve (30mm port) @ 7.0 cm2. If say 4 valves are open at once (2 cylinders) that is 28 cm2 total flow area. An optimized 60mm t.body has about 26 cm2 of flow area = "probably adequete". But if 8 valves are open, t.body is definately the "narrowest" point in the intake tract. Does this make sense?
