SERVICE MANUAL CYLINDER HEAD & VALVES Section 3 SPECIFICATIONS CHART 300 Series Values Dimension Title Intake Exhaust Number of Valves per Cylinder 2 2 Valve Seat Runout in Cylinder Head 0.05 mm - (0.002 in) 0.05 mm - (0.002 in) Valve Face Runout 0.038 mm - (0.0015 in) 0.038 mm - (0.0015 in) Valve Stem Diameter 9.444 mm = (0.3718 in) 9.444 mm = (0.3718 in) 9.462 mm (0.3725 in) 9.462 mm (0.3725 In) Valve Face Angle 3000’-3015' 45 00' - 45 15' Valve Seat Insert Angle 3000’-30 15' 45 00' - 45 15' Valve Seat Width 1.91 mm = (0.075 in) 1.91 mm =  (0.075 in) 2.26 mm   (0.085 in) 2.26 mm   (0.085 in) Minimum Valve Face Margin 1.73 mm  =  (0.068 in) 1.14 mm  =  (0.045 in) Valve Head Recession From Face 0.00 mm = 0.000 in) 0.00 mm =  (0.00 in) of Cylinder Head 0.36 mm   (0.014 in) 0.36 mm   (0.014 in) Valve Seat Insert Counterbore 45.14 mm  = (1.777 in)* 38.91 mm = (1.532 in) Diameter 45.16 mm   (1.778 in) 38.94 mm   (1.533 in) Depth of Valve Seat Insert 11.18 mm = (0.440 in) 11.15 mm = (0.439 in) Counterbore 11.23 mm   (0.442 in) 11.20 mm  (0.441 in) Valve Guide Type Replaceable Replaceable Valve Guide Length 69.85 mm  =  (2.750 in) 69.85 mm  =  (2.750 in) Valve Guide I.D. 9.500 mm = (0.3740 in) 9.500 mm = (0.3740 in) (Reamed After Assembly) 9.525 mm   (0.3750 in) 9.525 mm   (0.3750 in) Valve Guide O.D 15.900 mm = (06260) 15.900 mm = (0.6260 in) 15.913 mm (0.6265 in) 15.913 mm   (0.6265 in) Maximum Allowable Stem Clearance in Guide 0.15 mm  =  (0.006 in) 0.15 mm  =  (0.006 in) Before Replacing Valve Guide Bore Diameter (Ream Through After 9.4107 mm = (0.3750 in) 9.4107 mm = (0.3750 in) Assembly) 9.4996 mm (0.3740 in) 9.4996 mm   (0.3740 in) Valve Guide Interference Fit 0.0203 mm = (0.0008 in) 0.0203 mm = (0.0008 in) Dimension 0.0660 mm   (0.0026 in) 0.0660 mm   (0.0026 in) Valve Guide Height From Cylinder 25.20 mm = (0.992 in) 32.31 mm = (1.272 in) Head Surface 25.70 mm   (1.012 in) 32.82 mm   (1.292 in) CGES-185-3 PRINTED IN UNITED STATES OF AMERICA Page 7