The Ford Barn - View Single Post - lowest oil pressure for engine to survive

flatheadmurre · 07-04-2020, 11:09 PM

If the engine has the original longbody pump in it now changing to a shortbody #80 std pump actually raises the flow a bit since you are going from straight to helical cut gears.
If a fresh shortbody pump aint enough i would check the bearings and surfaces next.
If we start blocking the gallery oil relief spring the oilpressure gauge will probably peg for a long period...and it shouldn´t open until #50 is reached if in good shape.
There´s no simple answer to theese kind of problems...taking the pan off and checking bearings would be the best start.

07-04-2020, 11:09 PM	#55
flatheadmurre Senior Member Join Date: Apr 2015 Location: Sweden Posts: 3,045	Re: lowest oil pressure for engine to survive If the engine has the original longbody pump in it now changing to a shortbody #80 std pump actually raises the flow a bit since you are going from straight to helical cut gears. If a fresh shortbody pump aint enough i would check the bearings and surfaces next. If we start blocking the gallery oil relief spring the oilpressure gauge will probably peg for a long period...and it shouldn´t open until #50 is reached if in good shape. There´s no simple answer to theese kind of problems...taking the pan off and checking bearings would be the best start.