The Ford Barn - View Single Post - 80 lb oil pump in 1935 flathead

glennpm · 11-08-2023, 08:57 AM

I would change the pump. The Flathead and it's low maximum RPM, does not need this much pressure. The excess pressure will probably give you oil leaks though such as at the rear main seal.

BTW, I just did this change on a SBC I have. The replaced pump operated at around 75psi. The new Melling standard pump operates right around 50psi and leakage issue has been resolved.

Glenn

11-08-2023, 08:57 AM	#2
glennpm Senior Member Join Date: Sep 2014 Location: Wiscasset, Maine Posts: 2,055	Re: 80 lb oil pump in 1935 flathead - is this okay? I would change the pump. The Flathead and it's low maximum RPM, does not need this much pressure. The excess pressure will probably give you oil leaks though such as at the rear main seal. BTW, I just did this change on a SBC I have. The replaced pump operated at around 75psi. The new Melling standard pump operates right around 50psi and leakage issue has been resolved. Glenn