madmaxx Max you need to start getting better info than you are coming out with. M-57HV pump has a 25% LARGER GEAR AND VOLUME over the M-57HP. The spring inside the pump is what gives you the high pressure. Do you think that the oil pressure you read on your oil pressure gauge is the same at the oil filter housing as it is on the rocker arm shafts??? Not even close. Depending on motor and oil modifications about 15-30 psi differents. This is for side oils and Cammer motors. I little less for center oiler motors. This also means you are not, NOT getting the same oil pressure to rods #4, #8 on an FE motor you are getting to #1 & #5. As far as a bypass valve in oil filter, some do MOST DON'T. I run 135-138 psi warning up my motor at 1,200 rpms, when the motor is hot in the 180f coolant temp and oil temp is about 190f I idle at 35-40 psi and run 70-80 psi on the track. As far as filters it depends on the paper and how large the microns are in the paper, some are 5, others are 30 and up. Some filters are single stage others are dual stage. Dual stage are not the best IMO for any kind of motor. As far as Royal Purple, you keep drinking it. Barry is right about getting on a nerve with theories. Rick L.
Go back to school maxx
Not even close. Depending on motor and oil modifications about 15-30 psi differents. This is for side oils and Cammer motors. I little less for center oiler motors. This also means you are not, NOT getting the same oil pressure to rods #4, #8 on an FE motor you are getting to #1 & #5. As far as a bypass valve in oil filter, some do MOST DON'T. I run 135-138 psi warning up my motor at 1,200 rpms, when the motor is hot in the 180f coolant temp and oil temp is about 190f I idle at 35-40 psi and run 70-80 psi on the track. As far as filters it depends on the paper and how large the microns are in the paper, some are 5, others are 30 and up. Some filters are single stage others are dual stage. Dual stage are not the best IMO for any kind of motor. As far as Royal Purple, you keep drinking it.
Barry is right about getting on a nerve with theories. Rick L.
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