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Home >> Chevrolet >> 2015 >> Camaro LS, Standard Trans >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 11 (Engine Mechanical - 6.2L (L99 LS3 LSA) Or 7.0L (LS7) - Repair Instructions - Off Vehicle) >> Repair Instructions - Off Vehicle >> Piston, Connecting Rod, and Bearing Installation (LS7) >> Piston, Pin, and Connecting Rod Installation

Piston, Pin, and Connecting Rod Installation

WARNING: This page is about a different variant/trim than selected.
    Fig 1: View Of Piston, Connecting Rod & Bearing Assembly
    GM1552501Courtesy of GENERAL MOTORS COMPANY
  1. Lubricate the following components with clean engine oil:
    • Piston
    • Piston rings
    • Cylinder bore
    • Bearings and bearing surfaces
  2. Install the bearings to the connecting rod and cap.
  3. Position the oil control ring end gaps a minimum of 25 mm (1.0 in) from each other.
  4. Position the compression ring end gaps 180 degrees opposite each other.
    5. Fig 2: Crankshaft Protector Pins Installed in Connecting Rod Bolt Holes
    GM1552499Courtesy of GENERAL MOTORS COMPANY
  5. Install the J 41556  guide to the connecting rod.
    6. Fig 3: View of Mark On Top Of Piston & Connecting Rod Tab
    GM1768708Courtesy of GENERAL MOTORS COMPANY
  6. Identify the proper installation direction of the piston and connecting rod assembly. When installing the piston and connecting rod assembly, the mark on the top of the piston (1) and the large tabs (2) on the side of the connecting rod should face the front of the engine.
    7. NOTE:

    When installing a piston into a cylinder, use a ring compressor sleeve or equivalent for best results. The following features should be looked for when selecting a ring compressor sleeve.

    • Hard anodized and Teflon coated for low friction and prolonged wear resistance.
    • Smooth radius that tapers down to the specific bore size.
    • Sleeve should compress the piston rings smoothly and evenly.
    • Using a ring compressor sleeve greatly reduces the difficulty with installing thin high-performance oil rings.

    If a ring compressor sleeve is unavailable, a universal ring compressor will work, but is more difficult to use.

  7. Compress the piston rings using a ring compressor sleeve or equivalent.
    8. NOTE:

    The piston alignment mark MUST face the front of the engine block.

  8. Install the piston, pin, and connecting rod assembly into the cylinder bore. Tap the piston into the bore with a wooden hammer handle. Guide the connecting rod to the crankshaft journal using the J-41556  rod guide while gently tapping the piston into place. Hold the ring compressor sleeve or equivalent against the engine block until all rings have entered the cylinder bore.
  9. Remove the J 41556  guide from the connecting rod.
    10. Fig 4: Connecting Rod Bolt, Cap & Bearing
    GM1552547Courtesy of GENERAL MOTORS COMPANY
    CAUTION:

    Refer to Fastener Caution .

    NOTE:

    The connecting rod and cap must be assembled with the mating surfaces properly aligned.

  10. Install the bearing cap (103), bearing (104), and bolts (102).
    • Tighten the bolts a first pass to 20 N.m (15 lb ft).
    • Tighten the bolts a final pass to 110 degrees using the J 45059  meter.
    11. Fig 5: Measuring Connecting Rod Side Clearance
    GM1366378Courtesy of GENERAL MOTORS COMPANY
  11. Measure the connecting rods for the proper side clearance. Refer to Engine Mechanical Specifications (LS7) .
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