HV oil pump vs Stock oil pan
Partner looks like you have quite the experience with the large displacement industrial power plants.
I also cut my teeth rebuilding DDA engines for Inland Diesel back in the earlier 80's even did a pair of sweet sixteens.
Did a hitch as a Service Engineer for Waukesha Engine wrenching on 12 & 16 cylinder engines up to 10,000 cid, worked in their Engineering Lab as a Dyno Tech for 5 years.
Retired from a little company called Cummins Engine Company.
spend a few bucks and watch the show....
the Host liked the higher oil pressure at idle....
What was the standard volum
spend a few bucks and watch the show....
the Host liked the higher oil pressure at idle....
What was the standard volumn pump idle oil pressure? Also a factor is compression ratio. A high compression engine pushes down on the rod bearings a bit more than low compression, even at idle.
At idle the engine loads are low, so pressure is not a big issue on the crankshaft. Flow is required to provide an adequate oil film. The camshaft journal bearing load does not change appreciably between idle and red line. Now that said, to accelerate the valvetrain to open the valves puts some extra load on those bearings.
The Buick small V8 going back to the aluminium 215 and many ither engines oil the cam journals through the top of the bearing. This lets oil spill out the sides of the bearing without developing a good oil film. From the front of the engine, the oil hole in the cam bearing should be at about 4 o'clock. This gets the oil in between the bearing and cam journal while there is still clearance to spread out and develop a good film. This helps keep oil pressure up.
Rat, take note. This is important. With the oiling system properly set up, 10# oil pressure at idle is generally adequate. High compression should have a bit more. By 2000RPM you should have 35 to 40#. At 6500RPM 65 to 70 PSI.
Again I state that oil pressure is a balance between the pump output volumn at X RPM and "leaks" in the engine. These leaks are from bearing clearances, rod side clearance, cam bearing clearance, lifter bores, roller lifter bearings, rocker arm bearings. Rebuilt Ford FE engines can have low oil pressure if a galley plug is left out behind the distributor. This is installed behind the timing cover and through the the front of the block. This is an unwanted leak.
If an engine requires a HV oil pump or the owner thinks it will be a benefit, go for it. When you add components that require lubrication from the engine oil system, like maybe a blower or turbocharger, then a HV pump is required because another leak has been added.
