What size engine for the online/Youtube EC?

273 said

It's the main ultimate limit to power, bigger the bore bigger the possible valve the more possible airflow, strokes are limited to piston speed therefore same possible cfm of air at max piston speed.

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So you think the bigger the valve the greater the HP potential? You don't think that a bigger valve might kill the vacuum generated at the valve curtain area and diminish vaporization which you need especially considering modern pump gas has a much higher mid to high distillation temp?