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Home >> Chevrolet >> 2005 >> Aveo Base, 4D Hatchback >> Repair and Diagnosis >> External Pages >> Different car >> Section 109 (Engine Mechanical - 1.6L) >> Repair Instructions - On Vehicle >> Valve Guide Reaming, and Valve and Seat Grinding >> Valve Seat - Cut

Valve Seat - Cut

WARNING: This page is about a different car, the 2008 Suzuki Swift +, 2008 Pontiac Wave, and 2008 Chevrolet Aveo. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Identifying Valve Seat Angle, Upper Correction Angle, And Lower Correction Angle
    GM1241780Courtesy of GENERAL MOTORS CORP.
  1. Place the cylinder head on wooden blocks.
  2. Cut the intake and exhaust valve seats using the KM-340-7 included in the KM-340-1-C  as follows:
    • Valve seat: A 44.5-45 degree side (b) using the KM-340-13 included in the KM-340-1-C 
    • Upper correction angle: A 30 degree side (a) using the KM-340-13 included in the KM-340-1-C 
    • Lower correction angle: A 60 degree side (c) using the KM-340-26 included in the KM-340-1-C 
  3. Clean the chippings from the cylinder head.
  4. Inspect the dimensions to make sure the valve seat width is as follows:
    • Intake: 1.17-1.57 mm (0.046-0.062 in)
    • Exhaust: 1.4-1.8 mm (0.055-0.071 in)
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