nissan Workshop Repair Guides

Nissan and Datsun Workshop Service and Repair Manuals

Valve Seat > < Valve Guide - Clearance|Page 2497
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Valve Guide: Service and Repair

VALVE GUIDE REPLACEMENT

1. To remove valve guide, heat cylinder head to 150 to 160°C (302 to 320°F) by soaking in heated oil.

2. 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.

3. Ream cylinder head valve guide hole.

Valve guide hole diameter (for service parts): 

Intake:  ............................................................................................................................................  11.175 - 11.196 mm (0.4400 - 0.4408 inch) 
Exhaust:  ...........................................................................................................................................  12.175 - 12.196 mm (0.4793 - 0.4802 inch)

4. Heat cylinder head to 150 to 160°C (302 to 320°F) and press service valve guide onto cylinder head.

Projection "L":  ..................................................................................................................................................  13.2 - 13.4 mm (0.520 - 0.528 inch)

5. Ream valve guide. 

Finished size:

Intake:  .................................................................................................................................................  7.000 - 7.018 mm (0.2756 - 0.2763 inch)
Exhaust:  ...............................................................................................................................................  8.000 - 8.011 mm (0.3150 - 0.3154 inch)

Valve Seat > < Valve Guide - Clearance|Page 2497