3. Dimensions and Clearances
3-1
All clearances are at 70° F (21° C) room temperature. All measurements are listed in inches with
millimeter measurements in parentheses. Measurements are for standard size parts.
FACTORY SPECIFICATION ALLOWABLE
DESCRIPTION MIN. MAX. LIMIT
Cylinder Head
Cylinder Head Distortion – – 0.0157
– – (0.4)
Cylinder Block
Cylinder Bore I.D. 3.1102 3.1110 3.1138
(79.00) (79.02) (79.09)
Crankshaft
Connecting Rod Journal O.D. 1.3177 1.3181 1.3157
(33.47) (33.48) (33.42)
Side Clearance – – 0.0098
– – (0.25)
Connecting Rod
Piston Pin Bore I.D. 0.7093 0.7096 0.7106
(18.015) (18.025) (18.050)
Large Bore I.D. 1.3189 1.3199 1.3204
(33.500) (33.525) (33.540)
Large Bore Clearance 0.0008 0.0022 0.0047
(0.020) (0.055) (0.120)
Side Clearance on Crankshaft 0.0157 0.0433 0.0590
(0.40) (1.10) (1.5)
Camshaft
Lobe Height (Intake and Exhaust) 1.4035 1.4059 1.3997
(35.65) (35.71) (35.55)
Piston
Piston Skirt O.D. 3.1089 3.1094 3.1063
(78.965) (78.98) (78.90)
Pin Bore I.D. 0.7084 0.7087 0.7084/0.7087
(17.994) (18.002) (17.994/18.002)
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