System Specifications

Cylinder head bolt; Refer to Service and Repair. Service and Repair
Cylinder head and valves
Cylinder head flatness of gasket surface
Standard Value Less than 0.03 mm (0.001 in.)
Limit 0.2 mm (0.007 in.)
Cylinder head grinding limit of gasket surface Total resurfacing depth of cylinder head and cylinder block
Limit 0.2 mm (0.007 in.)
Cylinder head overall height
Standard Value 120 mm (4.7 in.)
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.)
Valve stem outside diameter
Intake
Standard Value 6.0 mm (0.24 in.)
Exhaust
Standard Value 6.0 mm (0.24 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
Standard Value 0.04 - 0.07 mm (0.0016 - 0.0027 in.)
Limit 0.15 mm (0.005 in.)
Valve face angle
Standard Value 45° - 45.5°
Valve spring free length
Standard Value 51.0 mm (2.01 in.)
Limit Minimum 50.0 mm (1.97 in.)
Valve spring load/installed height
Standard Value 267/44.2 N/mm (60.0/1.74 lbs./inch)
Valve spring out-of-squareness
Standard 2° or less
Limit 4°
Valve seat valve contact width
Standard Value 0.9 - 1.3 mm (0.04 - 0 05 in.)
Valve guide inside diameter
Standard Value 6.0 mm (0.32 in.)
Valve guide projection from cylinder head upper surface
Standard Value 14.0 mm (0.55 in.)
Valve stem projection
Standard Value 49.30 mm (1.941 in.)
Limit 49.80 mm (1.960 in.)
Oversize rework dimensions of valve guide hole
0.05 oversize diameter
Standard Value 11.05 - 11.07 mm (0.4351 - 0.4358 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 - 31.81 mm (1.2520 - 1.2531 in.)
0.6 oversize diameter
Standard Value 32.10- 32.13 mm (1.2638- 1.2650 in.)