Valve Guide Replacement

WARNING: This page is about a different car, the 2003 Nissan Altima. 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: Soaking Cylinder Head In Hot Oil
Courtesy of NISSAN MOTOR CO., U.S.A.
Drive out valve guide with a press [under a 20 kN (2.2 ton-force) pressure] or hammer and suitable tool.

Fig 2: Driving Out Valve Guide
Courtesy of NISSAN MOTOR CO., U.S.A.
Ream cylinder head valve guide hole.
1. Valve guide hole diameter for intake and exhaust : 10.175 - 10.196 mm (0.4006 - 0.4014 in)
  
  Fig 3: Reaming cylinder head valve guide
  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.
Press valve guide from camshaft side to dimensions as in illustration.

Fig 4: Valve Guide Pressing Dimensions
Courtesy of NISSAN MOTOR CO., U.S.A.
Using valve guide reamer, apply reamer finish to valve guide.
1. Intake and exhaust : 6.000 - 6.018 mm (0.2362 - 0.2369 in)