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

Brian · 07-05-2020, 02:15 AM

Ok, so you've got an 80lb pump installed with a built in relief valve. Others have said you can 'regulate' the engine oil pressure through the relief valve at front of valve chamber. The engine will see pressure as regulated by the lower setting of the two r/v's Way I see it, the rear main which is fed directly from the pump can conceivably get higher pressure than the rest of the engine. Which adds to the rear main leak in engines not equipped with a rear seal. Or am I wrong?
You all know I play with 21 studders, always chasing that rear main leak...just because I run a 336 oil pump in it!! [Hi flow or what?!!]

07-05-2020, 02:15 AM	#58
Brian Senior Member Join Date: May 2010 Location: Masterton, New Zealand Posts: 3,829	Re: lowest oil pressure for engine to survive Ok, so you've got an 80lb pump installed with a built in relief valve. Others have said you can 'regulate' the engine oil pressure through the relief valve at front of valve chamber. The engine will see pressure as regulated by the lower setting of the two r/v's Way I see it, the rear main which is fed directly from the pump can conceivably get higher pressure than the rest of the engine. Which adds to the rear main leak in engines not equipped with a rear seal. Or am I wrong? You all know I play with 21 studders, always chasing that rear main leak...just because I run a 336 oil pump in it!! [Hi flow or what?!!] __________________ Unfortunately, two half wits don't make a whole wit!