updated CMC rules

[King Matt]

Excellent analysis of the Whistler, Richard. The only thing I would add is that the use of an engine displacement pump would accurately measure the displacement of the engine so that variable is not left up to chance. I beleive that tech at Nationals has access to one and it should SOP to use both when testing CR.

[AI#97]

That's not how the whistler works. It is a static measurement taken at top dead center with all the valves closed. It uses sound waves to measure the chamber volume. Given the right parameters, it will measure the static compression ratio.

Richard P.

Woah! Sounds a lot more complicated than I was lead to believe! I think i am going to get David and I some tylenol....extra strength!