Calculating oil pump requirements

D. Hake 4459 · 02-20-2014, 09:05 PM

Years ago I modified some Melling m55 oil pumps for small block chevy stock eliminator engines. I cut the gears down and cnc machined a plate to go in the bottom to take up the space I also did some other modifications. I did some 1/4 " and some 3/8" pumps. The 3/8" pumps were worth 9 horsepower more than a m55 in back to back dyno tests.I was planning to tap into the bypass circuit and plumb in a flow meter to monitor bypass flow. About that time Schumann started making pumps and I was raising my son so I didn't have time to pursue it. If you can monitor bypass flow you could find out how much oil pump you need. Derek

02-20-2014, 09:05 PM	#13
D. Hake 4459 Junior Member Join Date: Sep 2013 Location: Muskogee, Oklahoma Posts: 83 Likes: 56 Liked 2 Times in 1 Post	Re: Calculating oil pump requirements Years ago I modified some Melling m55 oil pumps for small block chevy stock eliminator engines. I cut the gears down and cnc machined a plate to go in the bottom to take up the space I also did some other modifications. I did some 1/4 " and some 3/8" pumps. The 3/8" pumps were worth 9 horsepower more than a m55 in back to back dyno tests.I was planning to tap into the bypass circuit and plumb in a flow meter to monitor bypass flow. About that time Schumann started making pumps and I was raising my son so I didn't have time to pursue it. If you can monitor bypass flow you could find out how much oil pump you need. Derek __________________ Derek Hake 4459 H/SA 69' Roadrunner