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Home >> Subaru >> 2005 >> Outback R VDC Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 17 (Engine Mechanical (H4DOTC)) >> Cylinder Head >> Inspection >> Intake And Exhaust Valve

Intake And Exhaust Valve

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  1. Inspect the flange and stem of valve, and replace them if damaged, worn, deformed or if "H" is exceed the standard value or if they have partial wear.

    H: 

    Standard (Intake) 

    1.0 - 1.4 mm (0.039 - 0.055 in) 

    Standard (Exhaust) 

    1.3 - 1.7 mm (0.051 - 0.067 in) 

    Valve overall length: 

    Intake 

    104.4 mm (4.110 in) 

    Exhaust 

    104.65 mm (4.1201 in) 

    Fig 1: Inspecting Flange And Stem Of Valve
    G03829668Courtesy of SUBARU OF AMERICA, INC.
  2. Put a small amount of grinding compound on the seat surface, and lap the valve and seat surface. Install a new intake valve oil seal after lapping.