Quote:
Originally Posted by bobcowan
too much pressure for a SBF. It takes a lot of energy to make that much pressure - wasted energy. And it puts a lot of strain on the drive shaft. You run a high risk of shearing the pin on the drive gear.
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The pin shearing is one of the oldest old wives tales. When a pin shears it's because something jammed the
oil pump gears. Period.
As far as wasted energy, at 6,000 rpm I was down 2.7 HP when I changed to a Melling HV
oil pump. I can spare that. As cruisg RPM the different was zero.
I've been building SBF engines for over 45 years, and using the HV pumps for the last 15 years, along with Mobil 1 15w-50, I've been setting up ththe engines for power and reliability for long distance endurance runs. So far I've had zero engine issues. Zero blown engines after running flat out for about 140 miles over and over again is proof enough for me that this combinatin works very very well
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