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Have
you ever wondered how a change in camshaft timing or
duration can have dramatic affect on engine power and
drivability? The reason is called the Dynamic Compression
Ratio.
Our new
Camshaft Selection and Dynamic Compression Ratio Utility was
designed exclusively to help you choose the absolute best
camshaft and compression ratio match. This brand new program
can be used by itself or as a complement to our Dyno
Software to help get the most out of your engine.
A mild
engine with a 'big' cam may have a static compression ratio
of 10:1 but only have a dynamic compression ratio of less
than 8:1. What you thought would be a high output
combination may fall dead on its face and barely run!
Static
Compression Ratio:
The common but very rough calculation of how much your
engine will compress the incoming air/fuel mixture before
combustion.
Dynamic
Compression Ratio:
A very accurate calculation of how much your engine will
compress the incoming air/fuel mixture before combustion.
The Dynamic Compression Ratio takes the into account the
physical construction of your engine (Bore, Stroke, Chamber,
Head Gasket and Deck Clearance) combined with the
camshaft/valve closing data to calculate compression ratio
for your engine while it is in a 'running' (Dynamic)
condition
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