[pgarner]

Horsepower = Torque x rpm / 5252.

if an engine if in good running order HP, not bhp but the engine actual hp and torque lines should cross at 5252rpm ( must be in bhp and foot pounds or watts and newton meters not a combination of ether otherwise it wont work)

another thing a lot of cars now especially continental are expressed as PS (PferdeStarke the german version of horsepower ) however they are quite often expressed as having the same bhp there is a slight difference

1 PS = 1.014 BHP