Just to follow up on this thread.
I changed the spring, plunger, and cap on the oil pressure regulator that is part of the oil cooling assembly. I think the oil pressure is now better and have gained some on the higher end.
I am getting close to 50 PSI @ 2200 RPM
I also read the tag off the engine and the RATED idle RPM for these 4BT's is 800 RPM.
I was idling them @ 700RPM and the extra 100 RPM makes quite a difference on the OIL PSI
Now @800 RPM I have a SOLID 12 to 13 PSI idle.
I also installed a mechanical oil pressure unit on the engine itself and my electronic gauges are reading EXACTLY the SAME at all RPMS.
I will remove the mechanical gauge and just use for troubleshooting, I dont want to play games with the tube bursting or breaking and losing my oil.
Last edited by scenarioL113
on Apr 2nd, '11, 08:06, edited 1 time in total.
1971 28 Bertram
9-11-01 NEVER FORGET