Thats exactly what I'm talking about.

When an all-out racing engine is what you have in mind a cam will give you more.

Just look at the angle that the air way has in that rotary valve and only that gives back a chance to the poppet valve, and at the end you see the gears moving the shafts that rotate the rotary valves, there's the linearity that will kill it when you put it again side by side with a poppet valve race engine.

They say +14,000rpm, ok, but a hot bike will also do that all day, and a racing 1.6L-2.0L Honda is pretty close too, not to mention F1! and our little 4 strokes!, and way more importantly a poppet valve engine will probably have more power up there because of the timming available with the design. Whats good to be able to spin 20,000rpms if your torque curve is scrapping the floor?

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