Mitsubishi Workshop Service and Repair Manuals

Valve: Specifications

DIMENSIONS 

Face Angle Intake and Exhaust  .........................................................................................................................................................................  45 - 45.5°
Head Diameter

Intake  ..............................................................................................................................................................  34.67 - 34.93 mm (1.364 - 1.375 inch)
Exhaust  ...........................................................................................................................................................  30.37 - 30.63 mm (1.195 - 1.205 inch)

Length (Overall)

Intake  ..........................................................................................................................................................  111.49 - 111.99 mm (4.389 - 4.409 inch)
Exhaust  .......................................................................................................................................................  109.59 - 110.09 mm (4.314 - 4.334 inch)

Stem Diameter [1]

Intake  ..............................................................................................................................................................  5.934 - 5.952 mm (0.233 - 0.234 inch)
Exhaust  ...........................................................................................................................................................  5.906 - 5.924 mm (0.233 - 0.233 inch)

Stem To Guide Clearance 

Intake  

Standard Value  .....................................................................................................................................  0.048 - 0.066 mm (0.0019 - 0.0026 inch)
Limit  .................................................................................................................................................................................  0.076 mm (0.003 inch)

Exhaust  

Standard Value  .................................................................................................................................  0.074 - 0.094 mm (0.0029 - 0.0037 inch)    
Limit  .................................................................................................................................................................................  0.101 mm (0.004 inch)

Stem Tip Height 

Intake  ......................................................................................................................................................................................  48.04 mm (1.891 inch)
Exhaust   ..................................................................................................................................................................................  47.99 mm (1.889 inch)

Valve Margin

Intake  ..............................................................................................................................................................  1.285 - 1.615 mm (0.050 - 0.063 inch)
Exhaust  ...........................................................................................................................................................  0.985 - 1.315 mm (0.038 - 0.051 inch)

[1]  If stems are worn more than 0.05 mm (0.002 inch), replace valve.