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Thread: 4.2 CFMs...

  1. 08-27-2008 10:47 AM #1
    ginkof
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    4.2 CFMs...

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    Does anyone know how many CFMs our S4 4.2s flow? or is there a way to calculate it?
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  2. 08-28-2008 08:52 PM #2
    cit1991
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    Re: 4.2 CFMs...

    Quote Originally Posted by ginkof View Post
    Does anyone know how many CFMs our S4 4.2s flow? or is there a way to calculate it?
    CFM = displacement in cubic inches * RPM * volumetric efficiency / 3456

    61 cubic inches per liter

    VE is the unknown, but somewhere 0.8 to 1.
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