An oil pump should NEVER be installed without fully disassembling it, checking it out and cleaning it thoroughly. Some will refer to this as 'blue-printing' the pump. You wouldn't believe some of the crap that I've seen in brand new pumps out of the box.
We always disassemble it, clean it and break all sharp edges/burrs, check the action of the bypass valve, check rotor play, cover clearances, etc. Its literally the heart that pumps the life giving blood throughout your engine.
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Jeff Chambers
1990 Mustang GT 10.032 Seconds / 137.5 MPH
14-time Street Warrior World Record Setter
CRT Performance
2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH
2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2
"There's nothing boring about a small block automatic shifting gears at 9400 rpm!"
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