LOL, what I ment is that maybe thats one of the reasons F1 doesn't mess with 2 strokes either.

That's what I'm talking about, in 2 stroke rotary valve engines like ours for example, the gains that you get from the rotary valve design against a piston port for example are inmense, the same goes from a rotary valve to a cam curve, they are usually worlds apart, I'm not saying you are going to find a "brick wall on that road", im saying i've walked that road and found one! I hope you find a way to go over it though

The thing is that a poppet valve is not moved by the circular motion of the cam's shaft, instead is actuated by the cam, and that allows for independence in the design of the curve, allowing you to plot a curve that is non linear to the camshaft and crankshaft rotation, unlike any rotary valve design on 2 strokes or tube or rotary disk valves in 4 strokes

And thats kind of what I thought, but I even tryed very aggressive engines like hot on-road .21's, the area under the curve is not that hot at all compared to a hot 4 stroke, and if you try to get more agressive you start messing up and mixing the cycle stages.

Also the same thing allows for not needing to have that big of a port/valve area because the valve is fully open more time, and that helps velocity and torque.

Just for help: 70 to 75% of the poppet valve's face area is a good and conservative aproximation , that's what (+/-) a good full scale racing engine flows through a puppet valve like a modern (ok not new LOL) nascar or pro-stock engine. So there you go: valve area x .725

good luck, I would love to see your racing 4stroke project

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