1939 super 8 oil pressure

Posted by supereight On 2009/6/1 10:53:05

My engine seems to run with a low oil pressure at speed and when cold, it never indicates much over 40 psi which I think is just over half way up the guage. At idle it doesnt drop much under 30 either. I dont know what oil is in it and may change it so that I know it has a suitable classic grade 20 - 50.
The engine was rebuilt by a professional shop that has experience in these engines in 2000 and the car has only 500 miles since (approx).
The oil filter was "cut apart and cleaned and converted internally to a spin on filter", but leaks slightly at its joint around the circumferance in the middle of the filter unit.
Engine runs well generally.
I have not checked the regulator.
I would have expected it to to indicate at max pressure on start up and at speed.