Valve, Intake/Exhaust

Valve timing
Intake valve
Opens (BTDC) 15 °
Closes (ABDC) 53 °
Exhaust valve
Opens (BBDC) 53 °
Closes (ATDC) 15 °
Valve thickness of valve head (margin)
Intake
Standard Value 1.0 mm (0.04 in.)
Limit Minimum 0.5 mm (0.02 in.)
Exhaust
Standard Value 1.2 mm (0.05 in.)
Limit Minimum 0.7 mm (0.03 in.)
Valve overall height
Intake
Standard Value 112.30 mm (4.421 in.)
Limit Minimum 111.80 mm (4.402 in.)
Exhaust
Standard Value 114.11 mm (4.493 in.)
Limit Minimum 113.61 mm (4.473 in.)
Intake oversize rework dimensions of valve seat hole
0.3 oversize diameter
Standard Value 34.30 - 34.33 mm (1.3504 - 1.3515 in.)
0.6 oversize diameter
Standard Value 34.60 - 34.63 mm (1.3623 - 1.3633 in.)
Exhaust oversize rework dimensions of valve seat hole
0.3 oversize diameter
Standard Value 31.80 - 31.81 mm (1.2520 - 1.2531 in.)
0.6 oversize diameter
Standard Value 32.10 - 32.13 mm (1.2638 - 1.2650 in.)
Valve stem projection
Standard Value 49.30 mm (1.941 in.)
Limit 49.80 mm (1.960 in.)