Quote:
Originally Posted by plym49
In order for the engine to produce the same power, given the smaller valve opening, then I will need a larger throttle opening. This reduces pumping losses, slightly improving volumetric efficiency.
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It may improve volumetric eff at certain loads, but in terms of the pumping losses that result in the largest efficiency drop in gassers, it won't do anything because those are a result of limiting the amount of air to enter the cylinder. This can be done via a throttle, or valve, but as long as the cylinder can't completely fill up with gases efficiency will suffer. Honestly, the only improvement I think you could count on from something like this would be what you could see from limiting your right foot.