System Specifications
Cylinder Head and Valve TrainCylinder head gasket surface flatness 0.18 mm (0.007 inch)
Combustion chamber volume (cc) 61.5-64.5
Valve arrangement (front to rear)
LH E, I E, I, E, I
RH I, E, I, E, I, E
Valve guide bore diameter intake and exhaust 7.015-7.044 mm (0.276-0.277 inch)
Valve stem diameter-intake 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-intake, oversize 9.075-9.055 mm (0.3573-0.3565 inch)
Valve stem diameter-exhaust, oversize 9.063-9.043 mm (0.3568-0.3560 inch)
Valve stem diameter-intake, oversize 9.456-9.436 mm (0.3723-0.3715 inch)
Valve stem diameter-exhaust, oversize 9.444-9.424 mm (0.3718-0.3710 inch)
Valve stem-to-guide clearance-intake 0.020-0.069 mm (0.0008-0.0027 inch)
Valve stem-to-guide clearance-exhaust 0.045-0.095 mm (0.0018-0.0037 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 free length 50.7 mm
Valve spring squareness 1.2 mm
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)
Valve spring installed pressure 350 N (79 lbs) @ 40.7 mm (1.62 inch)
For specifications regarding Cylinder Head bolts, refer to service
procedure. Service and Repair
Intake Manifold Sequence
LH:
Exhaust Manifold torque and sequence