Valve Guide Replacement

WARNING: This page is about a different car, the 2007 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

NOTE: 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° - 130°C (230° - 266°F) by soaking in heated oil.
WARNING: Cylinder head is hot. Wear protective equipment to prevent getting burned.

Fig 1: Heating Cylinder Head
Courtesy of NISSAN MOTOR CO., U.S.A.
Drive out the valve guide with a press [under a 20 kn (2.2 US ton) 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 using suitable reamer.
Valve guide hole diameter (for service parts), intake and exhaust : 10.175 - 10.196 mm (0.4006 - 0.4014 in)

Fig 3: Applying Reamer Finish To Valve Guide
Courtesy of NISSAN MOTOR CO., U.S.A.
Heat cylinder head to 110° - 130°C (230° - 266°F) by soaking in heated oil and press new valve guide from camshaft side into the cylinder head to the dimensions as shown.
WARNING: Cylinder head is hot. Wear protective equipment to prevent getting burned.

Projection "L" : 12.6 - 12.8 mm (0.496 - 0.504 in)

Fig 4: Identifying Valve Guide Dimensions
Courtesy of NISSAN MOTOR CO., U.S.A.
Apply a reamer finish to the valve guide, using suitable reamer.
Intake and exhaust finished size : 6.000 - 6.018 mm (0.2362 - 0.2369 in)

Fig 5: Applying Reamer Finish To Valve Guide
Courtesy of NISSAN MOTOR CO., U.S.A.