Isuzu Workshop Service and Repair Manuals

Valve: Specifications

VALVE CLEARANCE STANDARD VALUE (COLD)

Intake ....................................................................................................................................................  0.23 mm - 0.33 mm (0.0091 inch - 0.0130 inch)
Exhaust ................................................................................................................................................  0.25 mm - 0.35 mm (0.0098 inch - 0.0138 inch) 

DIAMETER OF VALVE STEM:

Intake 

Standard ..........................................................................................................................................  5.977 mm - 5.959 mm (0.2353 inch - 0.2346 inch)
Limit ...........................................................................................................................................................................................  5.90 mm (0.2323 inch)

Exhaust 

Standard ..........................................................................................................................................  5.952 mm - 5.970 mm (0.2343 inch - 0.2350 inch)
Limit ...........................................................................................................................................................................................  5.90 mm (0.2323 inch)

PROTRUSION OF VALVE STEM:

Intake 

Standard ....................................................................................................................................................................................  39.32 mm (1.5480 inch)
Limit .........................................................................................................................................................................................  39.47 mm (1.5539 inch)

Exhaust 

Standard ....................................................................................................................................................................................  39.30 mm (1.5472 inch)
Limit ........................................................................................................................................................................................  39.45 mm (1.5531 inch) 

VALVE SEAT CONTACT WIDTH:

Standard ..........................................................................................................................................................................................  1.1 mm (0.0433 inch)
Limit ..............................................................................................................................................................................................  1.7 mm (0.0669 inch)