The Ford Barn

Jack Shaft · 07-05-2020, 09:17 AM

As long as the bearing requirement is satisfied additional oil pressure is nothing but a load on your engine.Insert bearings require additional pressure than whats needed to satisfy the hydrodynamic principle,this few pounds of added flow and pressure help keep the bearing cool and clean.Only a slight amount of flow/pressure is needed to accomplish this,your increasing the flow through a .0015 gap in a 2" bearing..Anything more looks good on the gauge,but isn't necessary.
Ford satisfied the bearing requirement on the model a engine with gravity,oil is pooled about 3 inches above the main bearing and flows down a tube to feed the mains. The model b engine with pressurized mains ran about 5 psi pressure,enough to do the job.
Companies that make high volume/pressure oil pumps are in business to make money,if the customer is comforted by high pressure then they will fill the need.

07-05-2020, 09:17 AM	#20
Jack Shaft BANNED Join Date: Dec 2019 Posts: 1,196	Re: lowest oil pressure for engine to survive As long as the bearing requirement is satisfied additional oil pressure is nothing but a load on your engine.Insert bearings require additional pressure than whats needed to satisfy the hydrodynamic principle,this few pounds of added flow and pressure help keep the bearing cool and clean.Only a slight amount of flow/pressure is needed to accomplish this,your increasing the flow through a .0015 gap in a 2" bearing..Anything more looks good on the gauge,but isn't necessary. Ford satisfied the bearing requirement on the model a engine with gravity,oil is pooled about 3 inches above the main bearing and flows down a tube to feed the mains. The model b engine with pressurized mains ran about 5 psi pressure,enough to do the job. Companies that make high volume/pressure oil pumps are in business to make money,if the customer is comforted by high pressure then they will fill the need.