BTW a good example of a Helmholtz resonator is blowing
across the opening of a Coke bottle.
Paul Lamar

Hi Paul,
how does this help our VE?
BR, Dave McC

It does not unless you are talking about applying the
Coke Bottle to your intake manifold :)

I suspect if you apply the Helmholtz resonator principle to an intake
manifold properly you may reduce the length of intake pipe necessary
to tune the engine. Since the length required is shorter the
internal skin friction drag is also less. At least I think this
is what Porsche is up to. I could be totally wrong.
http://www.phys.unsw.edu.au/~jw/Helmholtz.html

Paul Lamar ...No rotor no motor.

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