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crank horsepower calculator

Discussion in 'Forced Induction' started by Mafix, Apr 20, 2008.

  1. Mafix

    Mafix Owner Staff Member Administrator Donated!

    this might be hard to understand but here goes

    base HP x (boost in BAR +1)= estimated base crank HP

    PSI / 14.7 = BAR

    to find base HP

    total crank HP / (boost in BAR +1) = base HP

    example:

    stock 4th gen alltrac = 190hp crank
    190/((10/14.7)+1)=113
    so we add full intake and exhaust which yeilds roughly 10% of you base line
    so now we have 113+11.3=125hp base
    simple enough
    now we add more boost (safely) and turn our turbo up to 16lbs (a little over max on stock fuel)
    so we have:
    125*((16/14.7)+1)=261hp crank
     

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