hello everyone, I am having problems with my oil pressure in the top end, I have changed oil pump from a vane pump to a geared one, I dropped the sump, took off the pick up pipe, cleaned everything up put it back together with no difference. what started this problem was my fan belt broke, wasn't far from home and after checking it kept driving as I was about 8 mins from home but in that time it had smashed my crank seal and all oil had come out, topped it up and it had loud rattling top end so pulled off sump with alot of difficulty, changed pump still the same. could something else be blocked or is there another way to get oil pressure to the top end, need help badly, going out of my mind with this, thanks