Cylinder Block

NOTE: Cylinder bore should be measured at normal room temperature of 70°F (21°C).

Check cylinder bore, out-of-round and taper. Measurements should be taken at approximately .0196" (.050 mm) below top surface of cylinder bore, middle of bore and approximately .0020" (.051 mm) from bottom of cylinder bore.

Fig 1: Positioning Piston Ring End Gaps

Courtesy of CHRYSLER CORP.

Fig 2: Identifying Location Of Crankshaft Main Bearing Bore Grade Markings On Engine Block

Courtesy of CHRYSLER CORP.

Fig 3: Identifying Location Of Crankshaft Main Bearing Journal Grade Markings On Counter Weight

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Fig 4: Main Bearing Selection Chart

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Fig 5: Identifying Ink Markings On Main Bearing Inner Surface

Courtesy of CHRYSLER CORP.