FixVault
Home › Acura › 1992 › Legend Base, Automatic › Repair and Diagnosis › Engine Mechanical › Mechanical › 3.2L V6 › Overhaul › Valve Guide Replacement

Valve Guide Replacement

  1. Use a modified air impact chisel or Valve Guide Driver (07742-0010100) to remove and install valve guides. See Fig 1 . Chill replacement guides in a freezer for about an hour. Use a hot plate or oven to heat cylinder head evenly to 300°F (150°C).
    Fig 1: Fabricating Valve Guide Remover
    G92H00065Courtesy of AMERICAN HONDA MOTOR CO., INC.
  2. Working from camshaft side, drive valve guide about 5/64" (2 mm) toward combustion chamber to dislodge carbon and make removal easier. Turn cylinder head over. Drive valve guide out toward camshaft side. If guide does not move, drill out with 5/16" drill bit and try again.
    CAUTION: Drill guides only in extreme cases. Cylinder head damage can occur if valve guide breaks.
  3. Remove new guides from freezer individually as you need them. Slip a 15/64" (6 mm) steel washer over end of driver. Install new guides from camshaft side of head. Drive guides in until driver bottoms on head. If all guides are being replaced, cylinder head may have to be reheated once or twice.
  4. Ensure valve guide height is within specification. See CYLINDER HEAD  table under ENGINE SPECIFICATIONS at end of article. Using cutting oil, ream new valve guides by rotating Valve Guide Reamer (07HAH-PJ70110A or 07HAH-PJ70110B) clockwise full length of valve guide bore. Measure oil clearance between valve stem and valve guide. See CYLINDER HEAD table under ENGINE SPECIFICATIONS at end of article.
NOTE: Always reface valve seat after replacing valve guide.
About FixVault