Thread: Engine knock
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Old 11-22-2020, 08:15 AM   #2
nkaminar
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Join Date: Jan 2012
Location: Western North Carolina
Posts: 3,897
Default Re: Engine knock

A rod knock with side clearance would indicate a bent rod. As the piston goes up and down it forces the rod back and forth on the journal. Take the rod to a good machine shop and have them check for a bent rod. Bring the piston pin too as they will need that to check the rod. If you want you can just leave the piston on as they can remove it. The rod can be bent to straighten it out. Otherwise, the 0.020 side clearance should not cause any issues.
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