Morris 14 6 Cylinder - Technical support needed

I have an 1938 Morris 14 6 cylinder. The problem I am having is related to the OIL PUMP.

When the car is cold, I get 60 - 80 pounds of pressure but when the car is warm, I only get 15 pounds of pressure (at idle). When it is warm and I travel at about 20mph, I get 25 pounds of pressure.

I can seem to find any excessive wear on the bushes etc but I am not ruling them out.

I am not happy to drive the car with so little pressure so I would really appreciate any suggestions.

Many thanks in advance.

Possibly, that MIGHT be acceptable. What do the specs say? What weight oil are you using?

What gear? That would make a lot of difference with engine RPM, which will have some effect on OP. What is the pressure at 'highway' speed?

That said, I once purchased a 1955 Dodge V-8. When cold, it had 'normal' oil pressure, but it rapidly dropped off to near zero as the engine warmed up. There was so much sludge in the pan, the oil pick up screen was, for all intents and purposes, immersed into the sludge. As the oil warmed, it leaked through the bearings faster than the pump could 'pull' oil through the clogged screen. I knew the previous (first) owner. Every morning he would let the car warm up 5-20 minutes (depending on the temperature at that time of the year) to drive it approx. 1-1/2 miles to work! Work was about a 5/8 mile walk, due to a pedestrian entrance to the jobsite!

I would not worry about it as the new engines turn off the oil pressure light at a few pounds.When it gets to five lbs or less start looking at the main,rod and camshaft bearings.Good luck