Valve: Specifications

Valve timing
Intake valve
Opens (BTDC) 16 °
Closes (ABDC)
60 °
53 °
Exhaust valve
Opens (BBDC)
60 °
50 °
Closes (ATDC) 16 °
Valve thickness of valve head
Intake
Standard Value 1.0 mm (0.03 in.)
Limit Minimum 0.5 mm (0.02 in.)
Exhaust
Standard Value 1.2 mm (0.04 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.)
Valve stem outside diameter
Intake
Standard Value 6.0 mm (0.24 in.)
Exhaust
Standard Value 5.9 mm (0.23 in.)
Valve thickness to valve guide clearance
Intake
Standard Value 0.02 - 0.05 mm (0.0008 - 0.0019 in.)
Limit 0.10 mm (0.003 in.)
Exhaust 0.03 - 0.07 mm (0.0012 - 0.0027 in.)
Limit 0.15 mm (0.005 in.)
Valve face angle
Standard Value 45 - 45.5 °
Oversize rework dimensions of valve guide hole
0.05 oversize diameter
Standard Value 11.05 - 11.07 mm (0.4429 - 0.4437 in.)
0.25 oversize diameter
Standard Value 11.25 - 11.27 mm (0.4429 - 0.4437 in.)
0.50 oversize diameter
Standard Value 11.50 - 11.52 mm (0.4528 - 0.4535 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 - 31.83 mm (1.2520 - 1.2531 in.)
0.6 oversize diameter
Standard Value 32.10 - 32.13 mm (1.2638 - 1.2650 in.)