4.7L Engine
SPECIFICATIONS - 4.7L ENGINE
| DESCRIPTION | SPECIFICATION | |||
|---|---|---|---|---|
| GENERAL SPECIFICATIONS | ||||
| Engine Type | 90° SOHC V-8 16-Valve | |||
| Displacement | 4.7 Liters/4701 cc (287 Cubic Inches) | |||
| Bore | 93.0 mm (3.66 in.) | |||
| Stroke | 86.5 mm (3.40 in.) | |||
| Compression Ratio | 9.0:1 | |||
| Horsepower | 235 BHP @ 4800 RPM | |||
| Torque | 295 LB-FT @ 3200 RPM | |||
| Lead Cylinder | #1 Left Bank | |||
| Firing Order | 1-8-4-3-6-5-7-2 | |||
| CYLINDER BLOCK | ||||
| Cylinder Block | Cast Iron | |||
| Bore Diameter | 93.010 +/- .0075 mm (3.6619 +/- 0.0003 in.) | |||
| Out of Round (MAX) | 0.076 mm (0.003 in.) | |||
| Taper (MAX) | 0.051 mm (0.002 in.) | |||
| PISTONS | ||||
| Material | Aluminum Alloy | |||
| Diameter | 92.975 mm (3.6605 in.) | |||
| Weight | 367.5 grams (12.96 oz.) | |||
| Ring Groove Diameter | No. 1 | 83.37 - 83.13 mm (3.282 - 3.273 in.) | ||
| No. 2 | 82.833 - 83.033 mm (3.261 - 3.310 in.) | |||
| No. 3 | 83.88 - 84.08 mm (3.302 - 3.310 in.) | |||
| PISTON PINS | ||||
| Type | Pressed Fit | |||
| Clearance In Piston | 0.010 - 0.019 mm (0.0004 - 0.0008 in.) | |||
| Diameter | 24.013 - 24.016 mm (0.9454 - 0.9455 in.) | |||
| PISTON RINGS | ||||
| Ring Gap | Top Compression Ring | 0.20 - 0.36 mm (0.0079 - 0.0142 in.) | ||
| Second Compression Ring | 0.37 - 0.63 mm (0.0146 - 0.0249 in.) | |||
| Oil Control (Steel Rails) | 0.25 - 0.76 mm (0.0099 - 0.30 in.) | |||
| Side Clearance | Top Compression Ring | .051 - .094 mm (0.0020 - 0.0037 in.) | ||
| Second Compression Ring | 0.040 - 0.080 mm (0.0016-0.0031 in.) | |||
| Oil Ring (Steel Ring) | .019 - .229 mm (.0007 - .0091 in.) | |||
| Ring Width | Top Compression Ring | 1.472 - 1.490 mm (0.057 - 0.058 in.) | ||
| Second Compression Ring | 1.47 - 1.490 mm (0.057 - 0.058 in.) | |||
| Oil Ring (Steel Rails) | 0.445 - 0.470 mm (0.017 - 0.018 in.) | |||
| CONNECTING RODS | ||||
| Bearing Clearance | 0.015 - 0.055 mm (0.0006 - 0.0022 in.) | |||
| Side Clearance | 0.10 - 0.35 mm (0.004 - 0.0138 in.) | |||
| Piston Pin Bore Diameter (Interference Fit) | .025 - .048 mm (0.001 - 0.0019 in.) | |||
| Bearing Bore Out of Round (MAX) | 0.004 mm (0.0002 in.) | |||
| Total Weight (Less Bearing) | 555 grams (19.5771 ounces) | |||
| CRANKSHAFT | ||||
| Main Bearing Journal | Diameter | 63.488 - 63.512 mm (2.4996 - 2.5005 in.) | ||
| Bearing Clearance | 0.018 - 0.052 mm (0.0008 - 0.0021 in.) | |||
| Out of Round (MAX) | 0.005 mm (0.0002 in.) | |||
| Taper (MAX) | 0.008 mm (0.0004 in.) | |||
| End Play | 0.052 - 0.282 mm (0.0021 - 0.0112 in.) | |||
| End Play (MAX) | 0.282 mm (0.0112 in) | |||
| Connecting Rod Journal | Diameter | 50.992 - 51.008 mm (2.0076 - 2.0082 in.) | ||
| Bearing Clearance | 0.015 - 0.055 mm (0.0006 - 0.0022 in.) | |||
| Out of Round (MAX) | 0.005 mm (0.0002 in.) | |||
| Taper (MAX) | 0.008 mm (0.0004 in.) | |||
| CAMSHAFT | ||||
| Bore Diameter | 26.02 - 26.04 mm | |||
| (1.0245 - 1.0252 in.) | ||||
| Bearing Journal Diameter | 25.975 - 25.995 mm (1.0227 - 1.0235 in.) | |||
| Bearing Clearance | 0.025 - 0.065 mm (0.001 - 0.0026 in.) | |||
| Bearing Clearance (MAX) | 0.065 mm (0.0026 in.) | |||
| End Play | .075 - .200 mm (0.003 - 0.0079 in.) | |||
| End Play (MAX) | .200 mm (0.0079 in.) | |||
| VALVE TIMING | ||||
| Intake | Opens (BTDC) | 4.4° | ||
| Closes (ATDC) | 239.1° | |||
| Duration | 243.5° | |||
| Exhaust | ||||
| Opens (BTDC) | 240.5° | |||
| Closes (ATDC) | 13.2° | |||
| Duration | 253.70° | |||
| Valve Overlap | 17.6° | |||
| VALVES | ||||
| Face Angle | 45° - 45.5° | |||
| Head Diameter | Intake | 48.52 - 48.78 mm (1.9103 - 1.9205 in.) | ||
| Exhaust | 36.87 - 37.13 mm 1.4516 - 1.4618 in.) | |||
| Length (Overall) | Intake | 113.45 - 114.21 mm (4.4666 - 4.4965) | ||
| Exhaust | 114.92 - 115.68 mm (4.5244 - 4.5543 in.) | |||
| Stem Diameter | Intake | 6.931 - 6.957 mm (0.2729 - 0.2739 in.) | ||
| Exhaust | 6.902 - 6.928 mm (0.2717 - 0.2728 in.) | |||
| Stem - to - Guide Clearance | Intake | .018 - .069 mm (0.0008 - 0.0028 in.) | ||
| Exhaust | .047 - .098 mm (0.0019 - 0.0039 in.) | |||
| Max. Allowable Stem - to - Guide Clearance (Rocking Method) | Intake | 0.069 mm (0.0028 in.) | ||
| Exhaust | 0.098 mm (0.0039 in.) | |||
| Valve Lift (Zero Lash) | Intake | 11.25 mm (0.443 in.) | ||
| Exhaust | 10.90 mm (0.4292 in.) | |||
| VALVE SPRING | ||||
| Free Length (Approx.) | Intake and Exhaust | 49.0 mm (1.9291 in.) | ||
| Spring Force (Valve Closed) | Intake and Exhaust | 313.0 - 354.0 N @ 40.12 mm (70.3652 - 79.58237 lbs. @ 1.5795 in.) | ||
| Spring Force (Valve Open) | Intake and Exhaust | 776.0 - 870.0 N @ 28.88 mm (174.4517 - 195.5838 lbs. @ 1.1370 in.) | ||
| Number of Coils | Intake and Exhaust | 7.3 | ||
| Wire Diameter | Intake and Exhaust | 4.6 x 3.67 mm (0.1811 x 0.1445 in.) | ||
| Installed Height (Spring Seat to Bottom of Retainer) Nominal |
Intake | 40.12 mm (1.5795 in.) | ||
| Exhaust | 40.12 mm (1.5795 in.) | |||
| CYLINDER HEAD | ||||
| Gasket Thickness (Compressed) | .7 mm (0.0276 in.) | |||
| Valve Seat Angle | 44.5° - 45.0° | |||
| Valve Seat Runout (MAX) | 0.051 mm (0.002 in.) | |||
| Valve Seat Width | Intake | 1.75 - 2.36 mm (0.0698 - 0.0928 in.) | ||
| Exhaust | 1.71 - 2.32 mm (0.0673 - 0.0911 in.) | |||
| Guide Bore Diameter (Std.) | 6.975 - 7.00 mm (0.2747 - 0.2756 in.) | |||
| Cylinder Head Warpage (Flatness) | 0.0508 mm (0.002 in.) | |||
| OIL PUMP | ||||
| Clearance Over Rotors/End Face (MAX) | .095 mm - (0.0038 in.) | |||
| Cover Out - of - Flat (MAX) | .025 mm (0.001 in.) | |||
| Inner and Outer Rotor Thickness | 12.02 mm (0.4731 in.) | |||
| Outer Rotor to Pocket Diametral Clearance (MAX) | .235 mm (.0093 in.) | |||
| Outer Rotor Diameter (MIN) | 85.925 mm (0.400 in.) | |||
| Tip Clearance Between Rotors (MAX) | .150 mm (0.006 in.) | |||
| OIL PRESSURE | ||||
| At Curb Idle Speed (MIN)(1) | 48 kPa (7 psi) | |||
| @ 3000 RPM | 240 - 725 kPa (35 - 105 psi) | |||
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