Charles 4AGZE Blueprint Sheet Crankshaft Actual Mains 1 1.889" 47.98 mm 2 1.889" 47.98 mm 3 1.889" 47.98 mm 4 1.889" 47.98 mm 5 1.889" 47.98 mm Rods 1 1.653" 41.98 mm 2 1.653" 41.98 mm 3 1.653" 41.98 mm 4 1.653" 41.98 mm Piston Diameters 3.206 " 82.8 mm Balance Weights in grams Pistons 310 Piston Pins 101 Piston Rings 19 Rods 411 Piston to wall clearance 1 .0045" 2 .0045" 3 .0040" 4 .0045" Main Bearing clearance 1-3 .0025" 4&5 .002" Rod Bearing clearance 1-3 .002" 4 .0018" Piston pin clearance 1-4 .001" Piston ring end gap Top .021" Second .024" Crankshaft endplay .002" Combustion chambers 1-4 39cc Valve clearance Intake ...