Clearance to Run
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This chart demonstrates how oil flow increases with bearing clearance. An increase of only 0.001 inch from 0.0025 to 0.0035 will increase the oil flow rate around the bearing by 150 percent, or 1.5 gallons per minute. This excess oil is thrown off the crank and creates windage, which robs power and creates oil control problems for the piston rings. View Related Article
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