SAE PAPER 2011-36-0150
Should help with some of the discussions currently taking place.
Quote:
Oil pumps are sized to low speed and high temperature condition which is the worst condition for the lubrication systems. By designing the oil pump to satisfy this condition the pump became too big for other situations producing a excess of flow that is usually managed by a relief valve
Paper shows typical linear oil pump delivery curve, superimposed over typical engine demand curves.
Has reasons for most pumps being driven by the crank snout (more efficient pumps, although that's not to say a traditional small block chev/ford couldn't have an efficient pump designed for it)
Should help with some of the discussions currently taking place.
Quote:
Oil pumps are sized to low speed and high temperature condition which is the worst condition for the lubrication systems. By designing the oil pump to satisfy this condition the pump became too big for other situations producing a excess of flow that is usually managed by a relief valve
Paper shows typical linear oil pump delivery curve, superimposed over typical engine demand curves.
Has reasons for most pumps being driven by the crank snout (more efficient pumps, although that's not to say a traditional small block chev/ford couldn't have an efficient pump designed for it)