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Home >> Cadillac >> 2021 >> CT4 Sport, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 366 (Engine Mechanical - 6.2L (LT4) - Repair Instructions) >> Repair Instructions >> Piston, Connecting Rod, and Bearing Cleaning and Inspection >> Measuring Piston Ring End Gap

Measuring Piston Ring End Gap

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  1. GM4968Courtesy of GENERAL MOTORS COMPANY
    NOTE:
    • Do not attempt to file the end of the piston ring to achieve the proper end gap clearance.
    • Measure the piston ring in the cylinder in which it will be used.

    Place the piston ring into the cylinder bore 6.5 mm (0.25 in) below the top of the ring travel area. Both rings should be installed with the orientation marks facing the top of the piston.

  2. Insert a feeler gauge and measure the piston ring end gap. Refer to Engine Mechanical Specifications .