System Specifications

Cylinder Head and Valve Train
Cylinder head gasket surface flatness 0.18 mm ( 0.007 inch)
Combustion chamber volume 61.5-64.5
Valve guide bore diameter 7.015-7.044 mm (0.276-0.277 inch)
Valve stem diameter-intake (standard) 6.955-6.988 mm (0.2738-0.2751 inch)
Valve stem diameter-exhaust 6.929-6.962 mm (0.2728-0.2741 inch)
Valve stem diameter-oversize (intake) 9.075-9.055 mm (0.3573-0.3565 inch)
Valve stem diameter-oversize (exhaust) 9.063-9.043 mm (0.3568-0.3560 inch)
Valve stem diameter-oversize (intake) 9.456-9.436 mm (0.3723-0.3715 inch)
Valve stem diameter-oversize (exhaust) 9.444-9.424 mm (0.3718-0.3710 inch)
Valve stem-to-guide clearance-intake 0.020-0.069 mm (0.045-0.090 inch)
Valve stem-to-guide clearance-exhaust 0.038-0.083 mm (0.0015-0.0033 inch)
Valve head diameter-intake 47.27 mm (1.86 inch)
Valve head diameter-exhaust 37.1 mm (1.46 inch)
Valve face runout 0.05 mm (0.002 inch)
Valve face angle 45.675 degrees
Valve seat width 1.5-2.0 mm (0.06-0.08 inch)
Valve seat runout (T.I.R.) 0.076 mm (0.003 inch)
Valve seat angle 44.75 degrees
Valve spring compression pressure-valve open (without damper) 1000 N (224 lbs) @ 29.2 mm (1.16 inch)
Valve spring compression pressure-valve closed (without damper) 350 N (79 lbs) @ 40.7 mm (1.62 inch)
Valve spring installed height 40.7 mm (1.62 inch)
Rocker arm ratio 1.73

For torque specifications, refer to the service procedure.