System Specifications
SURFACE VARIATION - HEAD-TO-BLOCKOverall Flatness End To End (max) 0.305 mm (0.012 in.)
Overall Flatness Side To Side (max) 0.076 mm (0.003 in.)
CYLINDER BORE
Cylinder Bore Diameter
New 106.990-107.010 mm (4.2122-4.2130 in.)
Used 106.990-107.030 mm (4.2122-4.2138 in.)
Taper (MAX) 0.076 mm (0.003 in.)
Cylinder Out of Round (MAX) 0.038 mm (0.0015 in.)
CRANKSHAFT
Main Bearing Journal Diameter
High 83.013 mm (3.2682 in.)
Low 82.962 mm (3.2662 in.)
Main Bearing Clearance 1-6 0.04-0.12 mm (0.002-0.005 in.)
Out-of-Round (MAX.) 0.050 mm (0.002 in.)
Taper (MAX.) 0.013 mm (0.0005 in.)
End Play Range 0.120-0.432 mm (0.004-0.017 in.)
MAIN BEARING
Main Bearing Journal Diameter
High 83.013 mm (3.2682 in.)
Low 82.962 mm (3.2662 in.)
Main Bearing Clearance 1-6 0.04-0.12 mm (0.002-0.005 in.)
Caution: The 6.7L engine has different torque procedure for new and previously installed main bearing capscrews. Failure to use the correct torque procedure can result in engine damage.
Crankshaft Main Cap - Bolts (Previously Used)
Step 1 60 Nm (44 ft.lbs.)
Step 2 80 Nm (59 ft.lbs.)
Step 3 Rotate 90 degrees
Crankshaft Main Cap - Bolts (New Main Bearing Capscrews)
Step 1 120 Nm (89 ft.lbs.)
Step 2 Loosen completely
Step 3 60 Nm (44 ft.lbs.)
Step 3 85 Nm (63 ft.lbs.)
Step 3 Rotate 120 degrees
CONNECTING ROD
Side Clearance
(Min) 0.100 mm (0.004 in.)
(Max) 0.330 mm (0.013 in.)
Connecting Rod Journal Diameter 68.962-69.013 mm (2.7150-2.7170 in.)
Bearing Clearance
Desired 0.04-0.12 mm (0.002-0.005 in.)
PISTON DIMENSIONS AND CLEARANCES
Skirt Diameter
(Measure the skirt 21.4 mm (0.84 in.) from the bottom of the position) 106.828-106.892 mm (4.2078-4.2083 in.)
PISTON RING GAP & GROOVE CLEARANCE
Ring Gap:
Top Ring 0.30-0.46 mm (0.012-0.018 in.)
Intermediate 0.82-1.18 mm (0.032-0.047 in.)
Oil Control 0.22-0.58 mm (0.010-0.023 in.)
Ring Groove Clearance:
The clearance for the top piston ring can be measured accurately with a typical feeler gauge
Intermediate
(Min) 0.040 mm (0.0016 in.)
(Max) 0.110 mm (0.0043 in.)
Oil Control
(Min) 0.040 mm (0.0016 in.)
(Max) 0.085 mm (0.0033 in.)
CRANKSHAFT PULLEY TORQUE
Crankshaft Damper and Bolts 40 + 60 degrees Nm (30 + 60 degrees ft. lbs.).