Dimensional and Machining Specifications

Inlet Valve
Valve disc dia D 40 mm (1.5748 in)
Valve stem dia D1 7.955 - 7.970mm (0.3131 - 0.3137 in)
Valve Length L 110.2mm (4.3385 in)

Exhaust Valve
Valve disc dia D 35 mm (1.3779 in)
Valve stem dia D1 8.938 - 8.960mm (0.3519 - 0.3527 in)
Valve Length L 112.4 mm (4.4251 in)


Height "h" of
Inlet Valve (when new) 1.7mm (0.0669 in)
Exhaust (when new) 2.2mm (0.0866 in)

Valve disc
Inlet Valve
limit valve 1.2mm (0.0472 in)
Exhaust
limit valve 1.6mm (0.0629 in)

Sodium filing
Inlet No
Exhaust Yes

Permissible out of roundness at valve seat
Inlet 0.03mm (0.0011 in)
Exhaust 0.03mm (0.0011 in)