Intake And Exhaust Valve

2005 Subaru Outback i, StandardSECTION Intake And Exhaust Valve
  1. Inspect the flange and stem of valve, and replace if damaged, worn or deformed, or if "H" exceed the standard value.

    H: 

    Intake 

    Standard: 0.8 - 1.2 mm (0.03 - 0.047 in) 

    Exhaust 

    Standard: 1.0 - 1.4 mm (0.039 - 0.055 in) 

    Valve overall length: 

    Intake 

    120.6 mm (4.75 in) 

    Exhaust 

    121.7 mm (4.79 in) 

    Fig 1: Inspecting Flange And Stem Of Valve
    G03828044Courtesy of SUBARU OF AMERICA, INC.
  2. Put a small amount of grinding compound on the seat surface and lap the valve and seat surface. < Ref. to , VALVE SEAT, INSPECTION , Cylinder Head.> Install a new intake valve oil seal after lapping.
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.