18-12-2018, 11:23 AM
As part of my engine rebuild I have been recommended to take the oil pump .020” oversize. On the assumption this is a good idea for a road going splash fed sports engine without oil filter, this poses two questions:
Do I leave the jets the same size or enlarge them to get more flow through onto the crank? (I would have thought the latter, as there seems little point in just increasing system pressure for the hell of it)
and
Assuming that just shoving a wire through the jets is an unreliable way of proving where the oil will in fact end up I'd like to observe the flow through the jets after installing the crank but before fitting the rods and block. What cunning arrangements have people come up with to achieve this demonstration? e.g. is it better to find some way to drive the pump, or to stick a tank up high and allow gravity to provide the supply?
Do I leave the jets the same size or enlarge them to get more flow through onto the crank? (I would have thought the latter, as there seems little point in just increasing system pressure for the hell of it)
and
Assuming that just shoving a wire through the jets is an unreliable way of proving where the oil will in fact end up I'd like to observe the flow through the jets after installing the crank but before fitting the rods and block. What cunning arrangements have people come up with to achieve this demonstration? e.g. is it better to find some way to drive the pump, or to stick a tank up high and allow gravity to provide the supply?