Racing and Engine Math Formulas and Conversion Info

GV (Head Gasket Volume) = Bore(in) X Bore(in) X 12.87

    X (Head Gasket Thickness in Inches)



DV (Below Deck Volume) = Bore(in) X Bore(in) X 12.87 

    X (Inches Below the Deck)



HV (Head Volume) = CC's



VV (Dish, Valve Pocket, Dome Volume) = CC's 

(Minus for dish or valve pockets, Plus for dome)



PV (Volume displaced by Piston) = Bore X Bore X Stroke X 12.87



Compression Ratio = (GV+DV+HV-VV+PV) / (GV+DV+HV-VV)



Cubic Inches = Bore x Bore X Stroke X Number of Cylinders X .7854



Convert Cubic Inches to CCs = Cubic Inches X 16.386

Convert Cubic Inches to Liters = Cubic Inches X .016386 



Engine in Liters = (Bore(mm) X Bore(mm) X Stroke(mm)

X Number of Cylinders X 12.87) / (16386 X 1000)



Engine in CCs = (Bore(mm) X Bore(mm) X Stroke(mm)

X Number of Cylinders X 12.87) / 16386



Convert CCs to Cubic Inches = CCs / 16.386

Convert Liters to Cubic Inches = Liters / .016386