Dimensional and Machining Specifications

Inlet Valve
Valve disc dia D 43 mm (1.6929 in)
Valve stem dia D1 7.955 - 7.970 mm (0.3131 - 0.3137 in)
Valve Length L 110.2 mm (4.3386 in)

Exhaust Valve
Valve disc dia D 39 mm (1.5354 in)
Valve stem dia D1 8.938 - 8.960 mm (0.3519 - 0.3527 in)
Valve Length L 110.9 mm (4.3661 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)