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Home >> Chevrolet >> 2001 >> Venture Base, Van Passenger >> Repair and Diagnosis >> External Pages >> Different car >> Section 861 (Engine Mechanical (Repair Instructions 2 Of 3) - 5.7L) >> Off-Vehicle Repair Instructions - Part 2 >> Engine Block Cleaning and Inspection >> Measuring the Cylinder for Oversize

Measuring the Cylinder for Oversize

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Measuring Bore Gauge With Micrometer
    GM4974Courtesy of GENERAL MOTORS CORP.
  1. Adjust the micrometer to 99.0 mm (3.897 in).
  2. Insert the J 8087  into the micrometer and zero the bore gauge dial.
    3. Fig 2: Measuring Cylinder Bore
    GM4972Courtesy of GENERAL MOTORS CORP.
  3. Use a bore gage and measure the cylinder bore for oversize.

    Slide the bore gage up and down throughout the length of the cylinder bore. Check the bore both parallel and perpendicular to the centerline of the crankshaft.

    A cylinder that measures 99.0-99.018 mm (3.897-3.898 in) may be honed and serviced with a standard size piston.

    A cylinder bore that exceeds the maximum diameter must be serviced with an oversized piston.

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