Valve Guide Replacement

WARNING: This page is about a different car, the 2005 Nissan 350Z. However, it is still accessible from the selected car via links, so may be relevant.

When valve guide is removed, replace with oversized [0.2 mm (0.008 in)] valve guide.

To remove valve guide, heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil.

Fig 1: Heating Cylinder Head
Courtesy of NISSAN MOTOR CO., U.S.A.
Drive out valve guide with a press [under a 20 kN (2 ton, 2.2 US ton, 2.0 Imp ton) pressure] or hammer and suitable tool.
CAUTION: Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.

Fig 2: Removing Valve Guide
Courtesy of NISSAN MOTOR CO., U.S.A.
Using valve guide reamer (commercial service tool), ream cylinder head valve guide hole.
- Valve guide hole diameter (for service parts):
  - Intake and exhaust
    - : 10.175 - 10.196 mm (0.4006 - 0.4014 in)
Fig 3: Reaming Cylinder Head Valve Guide Hole
Courtesy of NISSAN MOTOR CO., U.S.A.
Heat cylinder head to 110 to 130°C (230 to 266°F) by soaking in heated oil.

Fig 4: Heating Cylinder Head
Courtesy of NISSAN MOTOR CO., U.S.A.
Using valve guide drift (commercial service tool), press valve guide from camshaft side to the dimensions as in the figure.
- Projection "L"
  - Intake and exhaust
    - : 12.6 - 12.8 mm (0.496 - 0.504 in)
CAUTION: Cylinder head contains heat. When working, wear protective equipment to avoid getting burned.

Fig 5: Using Valve Guide Drift (Commercial Service Tool), Press Valve Guide From Camshaft Side To Dimensions
Courtesy of NISSAN MOTOR CO., U.S.A.
Using valve guide reamer (commercial service tool), apply reamer finish to valve guide.
- Standard:
  - Intake and exhaust
    - : 6.000 - 6.018 mm (0.2362 - 0.2369 in)
Fig 6: Using Valve Guide Reamer (Commercial Service Tool), Apply Reamer Finish To Valve Guide
Courtesy of NISSAN MOTOR CO., U.S.A.