Measuring dynamic cylinder pressure

[Zublin, Bryan (SD-MS)]

Has anyone ever installed a pressure transducer in the spark plug hole and 
run the engine with that cylinder's spark and fuel injector disabled?  High 
speed data acquisition would be required, but it would allow one to measure 
the effects of various mods (cam, intake, exhaust, boost, etc).  Higher 
pressure would indicate better cylinder filling, although some temperature 
compensation would probably be required.  The max pressure for a non-firing 
cylinder is 120 to 200 psi, well within the range of reasonably priced 
transducers.

Bryan Zublin
bzublin at nlvl.com