How much oil pressure must I'have with a big type 1 engine?

[mychatype3]

Hello Loungers,
How much oil pressure must I’ have with a big type1 engine?

I’m talking about hi power engine’s with big crank (74 - 82) and big cylinders (90.5 - 94mm), oil sump and full flow systems with filter, thermostat and external coolers.

Here in my town there are running multiple big type1 engine’s with very different oil pressures !

What is a normal pressure when a engine is cold, warm and with stationer rpm?


Hope to here from you, thanks in advance.
Greetings mycha

[Jon]

Berg used to say 10 psi pr 1000 rpm.