Posts Tagged “intake tuning”

Recently a well known racing head porter asked for some graphics (pictures) for an article on head port design.  His article dealt with there is more to a head’s performance potential than just CFM flow numbers.

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Our engine performance simulation program (Engine Analyzer Pro) produces what we call RPM Data like torque, HP, fuel flow, BSFC, etc at each RPM of the run.  It also produces Cycle Data which are things like cylinder temperature, cylinder pressure, piston thrust on the wall, intake valve lift, intake valve flow, etc at every 4 degrees of crankshaft rotation. (Behind the scenes the data is being calculated at something more like every .1 degrees, but we only report it at every 4 degrees.) Read the rest of this entry »

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When we think something is 100%, we typically think it is the best it can be, that is perfect.  One way of rating an engine’s breathing ability is called Volumetric Efficiency. Read the rest of this entry »

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