Cylinder Head Assembly: Specifications
General SpecificationsCylinder Head and Valve Train
Valve Guide Bore Diameter 7.00 - 7.018 mm (0.276 inch)
Combustion Chamber Volume 65.197 +/- 2.068 - 2.018 cc
Valve Arrangement Front to Rear
LH=I-E-I-E-I-E
RH=E-I-E-I-E-I
Gasket Surface Flatness Total 0.08 mm (0.003 inch)
Valve Seat
Width (Exhaust and Intake)
1.556 - 2.404 mm (0.06 - 0.094 inch)
1.273 - 2.121 mm (0.05 - 0.083 inch)
Angle Degrees 45
Runout TIR Maximum 0.059 mm (0.002 inch)
Valves
Valve Stem Diameter Intake 6.965 - 6.98 mm (0.274 - 0.275 inch)
Valve Stem Diameter Exhaust 6.95 - 6.965 mm (0.27 - 0.274 inch)
Valve Stem to Guide Clearance Exhaust 0.035 - 0.068 mm (0.001 - 0.003 inch)
Valve Stem to Guide Clearance Intake 0.020 - 0.053 mm (0.001 - 0.002 inch)
Head Diameter Intake 45.9 - 46.1 mm (1.807 - 1.815 inch)
Head Diameter Exhaust 38.9 - 39.1 mm (1.531 - 1.539 inch)
Valve Face Angle Degrees 45 degrees
Valve Face Runout Limit 0.03 mm (0.001 inch)
Valve Springs
Intake Valve Spring Compression Pressure at Specified Height
275 - 305 Nm at 35.9 - 36.7 mm
(202.84 - 224.968 ft. lbs. at 1.413 - 1.445 inch)
Exhaust Valve Spring Compression Pressure at Specified Height
275 - 305 Nm at 35.9-36.7 mm
(202.84 - 224.968 ft. lbs. at 1.413 - 1.445 inch)
Intake Valve Spring Free Length 43.1 mm (1.7 inch)
Exhaust Valve Spring Free Length 43.1 mm (1.7 inch)
Intake Valve Spring Assembled Height 39.86 - 40.86 mm (1.569 - 1.601 inch)
Exhaust Valve Spring Assembled Height 39.86 - 40.68 mm (1.569 - 1.601 inch)
Camshaft Intake Lobe Lift 6.584 mm (0.259 inch)
End Play 0.075 - 0.185 mm (0.0003 - 0.007 inch)
Exhaust Lobe Lift 6.584 mm (0.259 inch)
Maximum Allowable Lobe Lift Loss 0.127 mm (0.005 inch)
Journal to Bearing Clearance 0.04 - 0.095 mm (0.002 - 0.004 inch)
Journal to Bearing Clearance Service Limit 0.152 mm (0.006 inch)
Camshaft Drive
Journal Diameter 27.935 - 27.96 mm (1.099 - 1.101 inch)
Bearing Inside Diameter 28.0 - 28.03 mm (1.102 - 1.104 inch)
Maximum Camshaft Journal Runout 0.05 mm (0.002 inch)
Torque Specifications
Exhaust Manifold Nuts 22 Nm (16 ft. lbs.)
Exhaust Manifold To Exhaust Pipe Bolts 40 Nm (30 ft. lbs.)
Cylinder head bolts Service and Repair
For camshaft bearing tightening sequence refer to procedure Service and Repair