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General Data: All dimensions are in millimeters |
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Type |
60 degree V6 |
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Displacement |
3.1L |
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RPO |
LH0 |
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Bore |
89.0 |
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Stroke |
84.0 |
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Deck Height |
224 |
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Compression Ratio |
8.8:1 |
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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 |
89.017-89.035 |
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Out of Round |
0.013 (Maximum) |
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Taper - Thrust Side |
0.02 (Maximum) |
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Piston: |
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Clearance |
0.022-0.058 |
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Piston Ring: |
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COMPRESSION |
Groove Clearance |
Top |
0.051-0.089 |
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Second |
0.051-0.089 |
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Gap |
Top |
0.18-0.41 |
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Second |
0.51-0.71 |
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OIL |
Groove Clearance |
0.2(Maximum) |
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Gap |
0.25-0.76 |
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Piston Pin: |
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Diameter |
22.992-22.997 |
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Clearance |
0.010-0.020 |
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Fit in Rod |
0.018-0.046 |
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Crankshaft: |
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Main Journal |
Diameter |
67.241-67.265 |
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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 |
0.032-0.077 |
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Crankshaft End Play |
0.06-0.21 |
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Crankpin |
Diameter |
50.758-50.784 |
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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 |
0.028-0.086 |
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Rod Side Clearance |
0.18-0.44 |
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Camshaft: |
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Lift |
Intake |
6.68 |
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Exhaust |
6.93 |
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Journal Diameter |
* |
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| Journals 1 & 4 |
51.03-51.08 |
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| Journals 2 & 3 |
50.77-50.83 |
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Journal Clearance |
0.03-0.10 |
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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 degrees |
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| Margin | * | |||
| Exhaust |
2.70 |
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| Intake |
2.10 |
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| Runout |
0.3 |
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Stem Clearance |
0.2-.0.53 |
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Valve Spring |
Free Length |
48.5 |
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Pressure N @ mm |
Closed |
391 @ 40 |
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Open |
867 @30 |
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Installed Height |
43 |
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Valve Spring Damper |
Free Length |
48.5 |
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Approx # of Coils |
4 |
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Fastener Tightening Specifications
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Item |
Nm |
Ft Lbs |
| Camshaft Sprocket Bolt | 24 | 18 |
| Connecting Rod Cap Nut | 50 | 37 |
| Crankshaft Damper Bolt | 103 | 76 |
| Cylinder Head Bolt (In Sequence) (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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| Exhaust Manifold Bolt | 28 | 21 |
| Flexplate/Flywheel Bolt | 83 | 61 |
| Front Timing Cover Case Bolt | ||
| Long | 45 | 35 |
| Short | 21 | 15 |
| Intake Manifold (In Sequence) | ||
| First Pass | 20 | 15 |
| Final Pass | 33 | 24 |
| * | ||
| Main Bearing Cap Bolt | ||
| First Pass | 50 | 37 |
| Final Pass | Add 77 Degrees | |
| Oil Filter Adapter | 39 | 29 |
| Oil Pan Rear Bolts | 25 | 18 |
| Oil Pan Bolt and Nut (Except Rear 2) | 6 | 7 |
| Oil Pump Bolt | 41 | 30 |
| Rocker Arm Nut | 27 | 20 |
| Rocker Arm Stud | 25 | 18 |
| Belt Tensioner | 54 | 40 |
| Throttle Body Bolts | 24 | 18 |
| Timing Chain Damper Bolt | 21 | 15 |
| Water Pump Pulley Bolt | 20 | 15 |
| Water Pump To Block Bolt | 24 | 18 |
| Water Pump To Front Cover Bolt | 8 | 10 |
| Exhaust Crossover Pipe Nut | 8 | 10 |
| Exhaust Heat Shield Nut | 8 | 10 |
| Valve Cover Bolt | 8 | 10 |