Quote: I don't really understand why it is necessary to begin with. Fluid can only flow as much as the smallest bottleneck. So rather you have a 20oz pepsi, or a 2qt pepsi bottle, it's gonna flow out the end of the bottle at the same rate. Maybe someone will correct me if I am wrong about my theory.
This is on the suction side... you ALWAYS try to have a larger inlet to your pump... REMEMBER... pumps dont suck... its still atmospheric pressure pushing the oil in.. all the pump does is create the negative pressure zone so the oil can get pushed in.... no difference than the intake and pistons(piston creates the negative so atmospheric pressure can push in the air/fuel
