Quote:
Originally posted by rx racer
figure 145 HP / 2.2L = 20.45 HP/L
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I believe engine volumetric efficiency (VE) is usually in percents. VE changes with engine RPM, a engine at wide open throttle at 3000rpm could have a VE of 90% and at 6000 rpm 60%. This is a rough guide. At maximum RPM modified engines may have a better VE, e.g.: average overhead valve engines 45% to 75%, overhead cam twin valve 65% to 80%, four valves per cylinder 75% to 90%.