15-02-2023, 02:52 PM
I am raising this old thread as it contains a lot of good advice. We are converting a 3 bearing engine to 2 bearing pressure feed and have machined out the centre bearing housing.
We have an over bored Austin oil pump delivering through the standard 5/16" hole to the lower oil gallery. The standard relief valve is blocked off and oil flows up to a remote full flow oil filter with an adjustable pressure release bypass. This overflow will reenter the crankcase via the filler tube or the plate over the timing gear.
Camshaft is O ringed and 3/32" restrictors in place, the cam centre plain bearing will be pressure fed through 1/16" jet.
My question is as the oil supply at the pump is only 5/16" ID, is there any point in making the other fittings in the system any larger?
I see 1/4" BSP has been mentioned , what size internal diameter is this ?
Guidance will be appreciated Russell
We have an over bored Austin oil pump delivering through the standard 5/16" hole to the lower oil gallery. The standard relief valve is blocked off and oil flows up to a remote full flow oil filter with an adjustable pressure release bypass. This overflow will reenter the crankcase via the filler tube or the plate over the timing gear.
Camshaft is O ringed and 3/32" restrictors in place, the cam centre plain bearing will be pressure fed through 1/16" jet.
My question is as the oil supply at the pump is only 5/16" ID, is there any point in making the other fittings in the system any larger?
I see 1/4" BSP has been mentioned , what size internal diameter is this ?
Guidance will be appreciated Russell