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General Data: All dimensions are in millimeters |
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Type |
60 degree V6 |
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Displacement |
2.8L |
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RPO |
LB6 |
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Bore |
89.0 |
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Stroke |
76.0 |
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Deck Height |
224 |
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Compression Ratio |
8.9:1 |
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Firing Order |
1-2-3-4-5-6 |
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Oil Pressure |
69 kPa @500 RPM; 205-380 kPa @ 2000 RPM (10 psi @ 500 RPM; 30-55 psi @ 2000R RPM) |
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Cylinder Bore: |
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Diameter |
88.983-89.017 |
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Out of Round |
0.013 (Maximum) |
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Taper - Thrust Side |
0.013 (Maximum) |
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Piston: |
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Clearance |
0.023-0.056 |
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Piston Ring: |
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COMPRESSION |
Groove Clearance |
Top |
0.051.089 |
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Second |
0.051.089 |
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Gap |
Top |
0.25-0.50 |
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Second |
0.25-0.50 |
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OIL |
Groove Clearance |
0.199 (Maximum) |
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Gap |
0.25-076 |
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Piston Pin: |
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Diameter |
22.992-22.997 |
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Clearance |
0.0064-0.0091 |
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Fit in Rod |
Press |
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Crankshaft: |
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Main Journal |
Diameter |
67.241-67.267 |
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Taper |
0.005 (Maximum) |
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Out Of Round |
0.005 (Maximum) |
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Main Bearing Clearance |
0.030-0.069 |
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Crankshaft End Play |
0.05-0.20 |
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Crankpin |
Diameter |
50.757-50.785 |
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Taper |
0.005 (Maximum) |
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Out of Round |
0.005 (Maximum) |
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Rod Bearing Clearance |
0.036-0.091 |
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Rod Side Clearance |
0.36-0.68 |
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Camshaft: |
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Lift |
Intake |
6.67 |
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Exhaust |
6.93 |
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Journal Diameter |
47.442-47.790 |
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Journal Clearance |
0.02-0.10 |
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Valve System: |
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Lifter |
Hydraulic |
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Rocker Arm Ratio |
1.50:1 |
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Valve Lash |
Intake |
1-1/2 Turns Down from Zero Lash |
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Exhaust |
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Face Angle (Intake & Exhaust) |
45 degrease |
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Seat Angle (Intake & Exhaust) |
46 degrease |
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Seat Runout (Intake & Exhaust) |
0.02 |
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Seat Width |
Intake |
1.55-1.85 |
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Exhaust |
1.70-2.01 |
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Stem Clearance |
0.025-0.069 |
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Valve Spring |
Free Length |
48.51 |
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Pressure Kg @ mm |
Closed |
40.8 @ 43.2 |
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Open |
97 @ 32.79 |
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Installed Height |
40.01 |
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Valve Spring Damper |
Free Length |
48.51 |
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Approx # of Coils |
4 |
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Fastener Tightening Specifications
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Item |
Nm |
Ft Lbs |
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Camshaft Sprocket Bolts |
24 |
18 |
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Connecting Rod Bolt Nuts |
51 |
37 |
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Crankshaft Damper Bolt |
77 |
104 |
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Cylinder Head Bolt (apply thread sealant to bolts) |
* | * |
| First Pass |
45 |
33 |
| Final Pass | Add 90 Degrees | |
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*Manifold Side* 6 2 3 7 5 1 4 8 * Outer Side * |
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| * | * | |
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Exhaust Manifold Bolt |
24 |
18 |
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Flywheel Bolt |
71 |
52 |
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Front Timing Cover Case Bolt |
* | * |
| 8mm | 18-35 | 13-25 |
| 10mm | 27-47 | 20-35 |
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Lower Intake Manifold Bolt |
* | * |
| First Pass | 22 | 16 |
| Final Pass | 31 | 23 |
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Upper Intake Manifold Bolt |
22 |
16 |
| Main Bearing Cap | 99 | 73 |
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Oil Pan Bolt |
* | * |
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6mm |
8-12 |
6-9 |
| 8mm | 19-30 | 14-22 |
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Oil Pump Bolt |
41 |
30 |
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Rocker Arm Nut |
24 |
18 |
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Timing Chain Damper Bolt |
20 |
15 |