Nissan and Datsun Workshop Service and Repair Manuals

Valve Guide: Specifications

DIMENSIONS 

Outer Diameter

Standard  .....................................................................................................................................................  9.523 - 9.534 mm (0.3749 - 0.3754 inch)
Service  ........................................................................................................................................................  9.723 - 9.734 mm (0.3828 - 0.3832 inch)

Inner Diameter 

Finished Size  ..............................................................................................................................................  5.500 - 5.515 mm (0.2165 - 0.2171 inch)

Cylinder Head Guide Hole Diameter

Standard  .....................................................................................................................................................  9.475 - 9.496 mm (0.3730 - 0.3739 inch)
Service  ........................................................................................................................................................  9.685 - 9.696 mm (0.3813 - 0.3817 inch)

Interference Fit Of Valve Guide 

Standard  .....................................................................................................................................................  0.027 - 0.059 mm (0.0011 - 0.0023 inch)
Service  ........................................................................................................................................................  0.027 - 0.049 mm (0.0011 - 0.0019 inch)

Stem To Guide Clearance

Intake  ..........................................................................................................................................................  0.020 - 0.050 mm (0.0008 - 0.0020 inch)
Exhaust  .......................................................................................................................................................  0.040 - 0.070 mm (0.0016 - 0.0028 inch)

Valve Deflection Limit  .................................................................................................................................................................  0.02 mm (0.008 inch) 

Projection Length (L)  ........................................................................................................................................  11.50 - 11.70 mm (0.453 - 0.461 inch)