Re: Loose Rod
You have a problem there. Insert bearings are available in standard and plus sizes to fit known crankshaft crank pin journal diameters. The crank pin journals need to be measured with a micrometer to see if they are close to some standard or oversize diameter. The bearings inserts should be of a known inside diameter and fit snug to the con rod big end with the locking tabs in their respective grooves. Plastigauge can be used to check clearances. Bearing shells should be marked for part number and size on the back of each shell. Check all this yourself or contact the shop that did the work for help.
The crankshaft may need some time in a crank grinding machine if the sizes don't match up. Only a poured babbitt block & connecting rods need shims.
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