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1990 Ford F250 4x4, ZF5, L/S 4.10, N/A 7.3L Diesel, 568,808km/377,497 miles, still on the original clutch!
1989 Ford F150 300-6, C6, 2.73, 127,000km/79,000 miles.
1987 Ford E350 26ft. Motorhome, N/A 6.9L Diesel, C6, 3.54, 265,000km/166,000 miles.
1985 Ford E350 Ext Van, 6.9L Diesel, C6, 4.11, 658,000km/411k miles
ahh. the dreaded "you need to spread the rep around" message. good find F250.
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Eric S.
1994 Ford F-250, SCLB, 7.3L IDI Factory Turbo, 2WD, E4OD, 4.10 LS.
ARP Head Studs, 60-1 Cold wheel, R&D IDI Performance 90cc DB2, Superduty e-fuel, AEM Dryflow, home made 3" exhaust outlet, 4"exhaust, some gauges(7)
Quote:
Originally Posted by RacinNdrummin
I still stand by the dodge comment... no DB pump is going to turdcloud as bad as a dodge....
How can i get more oil pressure out of a 1991 7.3 IDI...I'm runnin about 10-20 pds @600-700 rpm and about 40-45 pds @2100 @ normal operating temp...I don't like the low at the idel though I'd like to see both ends up about 10-15 pds...Is there a better oil pump for my truck out there???
10 lbs per 1000 rpm. Your doing fine. Volume is more critical than pressure, 70 pounds of oil pressure is near worthless if the clearances are too small.
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"If you carry a gun, people will call you paranoid. That's ridiculous. If I've got a gun, what in the hell do I have to be paranoid about?" - Clint Smith
Oil flow is more important than oil pressure. Low pressure means more flow with a positive displacement pump. The film strength of the oil and its additives are what is preventing wear. The system pressure just makes sure that the heat generated is carried away and a fresh supply of oil is there to replace what has been heated up & squished away.
Relieving oil pressure will release some horsepower and torque. To improve any oil flow, you must remove all casting flash and radius each edge within the system. Drain back is just as important as exiting the pump.
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Jim "Iron Giant" Fahlin ~ A high performance car is like a guitar, you have to tune it to achieve your best operation and pull ahead of the competition.
Relieving oil pressure will release some horsepower and torque. To improve any oil flow, you must remove all casting flash and radius each edge within the system. Drain back is just as important as exiting the pump.
Horsepower = Pressure (PSIG) × Flow (GPM)/ 1714
Assume approx 1 GPM per 1000 RPM
HP=55 PSI X 2 GPM / 1714 = .064 HP = not worth the effort for HP gain
Yeah, its not much but it could be the difference maker.
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Jim "Iron Giant" Fahlin ~ A high performance car is like a guitar, you have to tune it to achieve your best operation and pull ahead of the competition.
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