soundguy said: (quoted from post at 10:46:05 09/25/12) what's yer hot / cold / throttle / idle pressures and wht oil ya running.
5-6 psi hot throttle will keep metal from bumping.. but is minimums and ain't great.
Remember - it isn't pump pressure that keeps the parts separated - it's hydro-dynamic pressure created by the crankshaft journals spinning inside a close fitting bearing shell. And if the crankshaft joutrnal oil clearances are so wide that you are only getting 5 PSI pumping pressure the excessive clearance will prevent the hydro-dynamic pressure wedge (e.g. oil film) from fully forming and parts start to rub - especially at low RPM and/or under heavy loads.
TOH
This post was edited by TheOldHokie at 09:37:11 09/25/12 2 times.
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