There is an old rule of thumb:
10psi for every 1000 rpm as the minimum. ( hot engine) ( modern full pressure system not a 216)
Example
1000 rpm = 10 psi
3000 rpm = 30 psi
These are minimum values, obviously 10w vs 30w would make some differences. But if the engine does not meet these minimum value start looking for issues.
Last edited by showkey; 03/26/2016 4:51 PM.
