2.1.7 Crankshaft
Crankshaft (33, 44, 49, 66 and 74 engines)
Crank pin diameter:
• standard • 67.981 - 68.000 mm
• 1st undersize 0.25 mm • 67.731 - 67.750 mm
• 2nd undersize 0.50 mm • 67.481 - 67.500 mm
• 3rd undersize 1.00 mm • 66.981 - 67.000 mm
• 4th undersize 1.50 mm • 66.481 - 66.500 mm
Crank pin length 40.000 - 40.160 mm
Main bearing journal diameter (33, 44 and 49
engines):
• standard • 84.985 - 85.020 mm
• 1st undersize 0.25 mm • 84.735 - 84.770 mm
• 2nd undersize 0.50 mm • 84.485 - 84.520 mm
• 3rd undersize 1.00 mm • 83.985 - 84.020 mm
• 4th undersize 1.50 mm • 83.485 - 83.520 mm
Main bearing housing diameter (in cylinder block) 91.000 - 91.025 mm
Main bearing journal diameter (66 and 74 engines):
• standard • 89.985 - 90.020 mm
• 1st undersize 0.25 mm • 89.735 - 89.770 mm
• 2nd undersize 0.50 mm • 89.485 - 89.520 mm
• 3rd undersize 1.00 mm • 88.985 - 89.020 mm
• 4th undersize 1.50 mm • 88.485 - 88.520 mm
Main bearing housing diameter (in cylinder block) 96.000 - 96.025 mm
Main bearing shell thickness:
• standard • 2.955 - 2.965 mm
• 1st undersize 0.25 mm • 3.080 - 3.090 mm
• 2nd undersize 0.50 mm • 3.205 - 3.215 mm
• 3rd undersize 1.00 mm • 3.455 - 3.465 mm
2. Specifications
2-8 4th Generation Engines
8370 79492
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