Engine Mechanical Specifications (RPO Code LD8)
ENGINE MECHANICAL SPECIFICATIONS (LD8)Cylinder Block Assembly
Crankshaft Main Bearing Bore Diameter 72.430-72.442 mm (2.8516-2.8521 in)
Crankshaft Main Bearing Bore Out-of-Round 0.010 mm (0.0004 in)
Crankshaft Main Rear Oil Seal
Bore 115.962-116.038 mm (4.5654-4.5684 in)
Runout 0.250 mm (0.0098 in)
Cylinder Bore Diameter @ 41 mm (1.610 in) Below Deck Face 92.992-93.008 mm (3.6611-3.6617 in)
Cylinder Bore Out-of-Round
Production 0.010 mm (0.0004 in)
Service 0.100 mm (0.0039 in)
Cylinder Bore Taper
Production 0.010 mm (0.0004 in)
Service 0.100 mm (0.0039 in)
Cylinder Head Deck Height 224.55 mm (8.8406 in)
Cylinder Head Deck Surface Flatness 0.100 mm (0.0039 in)
Crankshaft
Connecting Rod Journal Diameter 53.947-53.963 mm (2.1239-2.1245 in)
Connecting Rod Journal Out-of-Round 0.005 mm (0.0002 in)
Connecting Rod Journal Taper 0.005 mm (0.0002 in)
Connecting Rod Journal Width 43.840-43.960 mm (1.7260-1.7307 in)
Crankshaft Balancer
Surface Diameter 50.730-50.870 mm (1.9972-2.0028 in)
Hub Inside Diameter 34.847-34.864 mm (1.3719-1.3726 in)
Crankshaft End Play 0.050-0.500 mm (0.0020-0.0197 in)
Crankshaft Main Bearing Clearance
Production 0.0150-0.0550 mm (0.0006-0.0022 in)
Service 0.0150-0.0635 mm (0.0006-0.0025 in)
Crankshaft Main Journal Diameter 64.350-64.366 mm (2.5335-2.5341 in)
Crankshaft Main Journal Out-of-Round 0.005 mm (0.0002 in)
Crankshaft Main Journal Taper 0.005 mm (0.0002 in)
Crankshaft Main Journal Thrust Wall Runout 0.040 mm (0.0016 in)
Crankshaft Main Journal Thrust Wall Square 0.010 mm (0.0004 in)
Crankshaft Main Journal Width #1, #2, #4, #5 24.540-24.660 mm (0.9661-0.9709 in)
Crankshaft Main Journal Width, Thrust #3 25.150-25.250 mm (0.9902-0.9941 in)
Crankshaft Nose Diameter
From Front Face 0.00-21.00 mm (0.0000-0.8268 in) 34.500-34.750 mm (1.3583-1.3681 in)
From Front Face 21.00-53.00 mm (0.8268-2.0866 in) 34.892-34.912 mm (1.3737-1.3745 in)
From Front Face 53.00 to Rolled Fillet (2.0866-Rolled Fillet) 33.450-33.550 mm (1.3169-1.3209 in)
From Front Face 89.94-110.54 mm (3.5409-4.3520 in) 44.950-45.000 mm (1.7697-1.7717 in)
Crankshaft Nose Runout
From Front Face 0.00-21.00 mm (0.0000-0.8268 in) 0.100 mm (0.0039 in)
From Front Face 21.00-53.00 mm (0.8268-2.0866 in) 0.030 mm (0.0012 in)
From Front Face 53.00 to Rolled Fillet (2.0866-Rolled Fillet) 0.100 mm (0.0039 in)
From Front Face 89.94-110.54 mm (3.5409-4.3520 in) 0.025 mm (0.0010 in)
Crankshaft Rear Flange
Diameter 95.880-95.980 mm (3.7748-3.7787 in)
Runout 0.025 mm (0.0010 in)
Crankshaft Rear Flange Face to Engine Flywheel Runout 0.025 mm (0.0010 in)
Crankshaft Runout
Main Journals #1, #5 0.022 mm (0.0009 in)
Main Journals #2, #4, #6 0.025 mm (0.0010 in)
Main Bearing Cap Torque
Step 1. Tighten the lower crankcase bolts in proper sequence.
First Pass: Tighten the lower crankcase bearing bolts (1-20) to 20 N.m (15 lb ft) in the proper sequence.
Final Pass: Tighten the lower crankcase bolts (1-20) an additional 65 degrees in the proper sequence using the J 45059.
Step 2. Tighten the upper-to-lower crankcase perimeter bolts (1-8) (1-8) to 30 N.m (22 lb ft).