SPECIFICATIONS 71 Camshaft Bearings Crank Mechanism Main Bearing Journals Camshaft bearing thickness, standard 1.92 mm (0.075 inch) Oversize 0.25 mm (0.010 inch) 2.04 mm (0.080 inch) 0.50 mm (0.020 inch) 2.17 mm (0.085 inch) 0.75 mm (0.030 inch) 2.29 mm (0.090 inch) Standard diameter (Ø) 108.0 mm (4.25 inches) Undersize diameter 0.25 mm (0.010 inch) 107.75 mm (4.2421 inches) 0.50 mm (0.020 inch) 107.50 mm (4.2323 inches) 0.75 mm (0.030 inch) 107.25 mm (4.2224 inches) 1.00 mm (0.040 inch) 107.00 mm (4.2126 inches) 1.25 mm (0.050 inch) 106.75 mm (4.2027 inches) Surface finish, main bearing journal Ra 0.25 Surface finish, radius Ra 0.4 Width, axial bearing pin (A), standard 47.0 mm (1.850 inches) Oversize 0.2 mm (0.008 inch), axial bearing 0.1 mm (0.004 inch) 47.2 mm (1.858 inches) 0.4 mm (0.016 inch), axial bearing 0.2 mm (0.008 inch) 47.4 mm (1.866 inches) 0.6 mm (0.241 inch), axial bearing 0.3 mm (0.012 inch) 47.6 mm (1.874 inches) Recess radius (R) 4.0 mm (0.157 inch)