Volvo Workshop Service and Repair Manuals

Valve: Specifications

Dimensional Specifications

Valve Crown Diameter (A)

Inlet  ..................................................................................................................................................................................................  31.00 ± 0.15 mm
Exhaust ..............................................................................................................................................................................................  27.00 ± 0.15 mm

Valve Stem:

Diameter (B)

Inlet:

Early Version ..............................................................................................................................................................  6.970 +0.0 / -0.015 mm
Late Version ...............................................................................................................................................................  5.970 +0.0 / -0.015 mm

Diameter (B1/B2):

Exhaust:

Early Version:

H1 .................................................................................................................................................................................................  17.4 mm
H2 .................................................................................................................................................................................................  70.4 mm
B1 ..................................................................................................................................................................................  6.963 ± 0.007 mm
B2 ..................................................................................................................................................................................  6.953 ± 0.007 mm

Late Version:

H1 .................................................................................................................................................................................................  22.7 mm
H2 .................................................................................................................................................................................................  65.1 mm
B1 ..................................................................................................................................................................................  5.962 ± 0.007 mm
B2 ..................................................................................................................................................................................  5.954 ± 0.007 mm

Total Valve Length (C)

Inlet .................................................................................................................................................................................................  102.00 ± 0.07 mm
Exhaust ............................................................................................................................................................................................  101.05 ± 0.07 mm

Disc Edge Height (D)

Inlet and Exhaust:

Standard ...................................................................................................................................................................................................  1.50 mm
Minimum After Grinding ................................................................................................................................................................................  1.20

Valve Angle

Inlet and Exhaust .................................................................................................................................................................................................  44.5°

Valve Stem Vertical Position

Valve Stem Height ..............................................................................................................................................................................  48.4 ± 0.50 mm