Originally Posted by
Glowgeek
OK, everything you said makes sense to me. The only question that remains in my tiny brain is how that poyt sound develops merely from reversed exhaust gasses bouncing of the top of a closed exhaust valve. How much science would it take to understand that?
The biggest part is the short period where the exhaust drwasw in air when the piston starts going down. That's the "poy" part... the "t" is the closing of the valve...
A bit a joke, but basically that basically is it.