The Chrysler 239 Magnum is a 3.9 L (3,906 cc, 239 cu·in) natural aspirated V6 90° four-stroke liquid-cooled internal combustion gasoline engine, manufactured by Chrysler Corporation from 1992 to 2003.
A 99.3 mm (3.91 in) cylinder bore and 84.0 mm (3.31 in) piston stroke give the 3.9 L (239 cu in) Magnum V6 engine a total of 3906 cm3 of displacement. The compression ratio rating is 9.1:1.
This engine produced from 177.0 PS (130 kW; 175.0 HP) at 4,400 rpm to 182.0 PS (134 kW; 180.0 HP) at 4,400 rpm of horsepower and from 264 N·m (26.9 kg·m, 194.6 ft·lb) at 3,200 rpm to 305 N·m (31.1 kg·m, 224.8 ft·lb) at 3,200 rpm of torque.
The Chrysler 239 Magnum V6 engine features:
- Six-cylinder V-type 90°
- Cast-iron cylinder block and heads
- OHV design with single camshaft
- Electronic ignition system with mechanical distributor
- Multiple-point (1992-1996) or Sequential multiport fuel injection system (1997-2003)
General information
| Engine Specifications | |
| Engine model | 3.9L Magnum |
| Engine type | 4-stroke, OHV, V6 90° |
| Displacement | 3.9 L, 3,906 cm3, (239 cu·in) |
| Max. horsepower | From 177 PS (130 kW; 175 HP) at 4,400 rpm to 182 PS (134 kW; 180 HP) at 4,400 rpm |
| Max. torque | From 264 N·m (26.9 kg·m, 194.6 ft·lb) at 3,200 rpm to 305 N·m (31.1 kg·m, 224.8 ft·lb) at 3,200 rpm |
| Cooling system | Liquid-cooled |
| Lubricating system | Pressurized lubrication |
| Ignition system | Electronic ignition system with mechanical distributor |
| Fuel system | 1992-1996: Multiple-point Fuel Injection System 1997-2003: Sequential Multiport Fuel Injection (SFI) |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Firing order: | 1-6-5-4-3-2 |
| Dimensions (L x W X H) | – |
| Dry weight | – |
Cylinder Block and Head
| Cylinder block | |
| Cylinder block alloy: | Cast-iron |
| Compression ratio: | 9.1:1 |
| Cylinder bore: | 99.3 mm (3.91 in) |
| Piston stroke: | 84.0 mm (3.31 in) |
| Cylinder internal diameter (standard): | 99.314-99.365 mm (3.91-3.912 in) |
| Number of piston rings (compression / oil): | 2/1 |
| Connecting rod small end diameter (standard): | 24.940-24.978 mm (0.9819-0.9834 in) |
| Piston pin diameter: | 24.996-25.001 mm (0.9841-0.9843 in) |
| Side clearance (Top): | 0.038-0.076 mm (0.0015-0.003 in) |
| Side clearance (Second): | 0.038-0.076 mm (0.0015-0.003 in) |
| Side clearance (Oil): | 0.060-0.210 mm (0.0024-0.0083 in) |
| Ring end gap (Top): | 0.254-0.508 mm (0.01-0.02 in) |
| Ring end gap (Second): | 0.254-0.508 mm (0.01-0.02 in) |
| Ring end gap (Oil): | 0.254-1.270 mm (0.01-0.05 in) |
| Ring width (Top): | 1.971-1.989 mm (0.0776-0.0783 in) |
| Ring width (Second): | 1.971-1.989 mm (0.0776-0.0783 in) |
| Ring width (Oil): | 3.848-3.975 mm (0.1515-0.1565 in) |
| Number of main bearings: | 4 |
| Crankshaft main journal diameter: | 63.487-63.513 mm (2.4995-2.5005 in) |
| Crankpin journal diameter: | 53.950-53.975 mm (2.124-2.125 in) |
| Crankshaft center distance: | 42.0 mm (1.655 in) |
| Cylinder head | |
| Cylinder head alloy: | Cast-iron |
| Valve arrangement: | OHV, chain driven |
| Valves: | 2 (12 valves in total) |
| Intake timig: | 240° |
| Exhaust timig: | 248° |
| Valve head diameter (INTAKE): | 48.665 mm (1.9159 in) |
| Valve head diameter (EXHAUST): | 41.250 mm (1.624 in) |
| Valve length (INTAKE): | 124.280-125.92 mm (4.8929-4.9575 in) |
| Valve length (EXHAUST): | 124.64-125.27 mm (4.9071-4.9319 in) |
| Valve steam diameter (INTAKE): | 7.899-7.925 mm (0.311-0.312 in) |
| Valve steam diameter (EXHAUST): | 7.899-7.925 mm (0.311-0.312 in) |
| Valve spring free length (INTAKE): | 49.962 mm (1.967 in) |
| Valve spring free length (EXHAUST): | 49.962 mm (1.967 in) |
Tightening procedure and torque specs
| Main bearing beam bolts: | 115 Nm; 11.5 kg·m; 85 ft·lb in two-three stages |
| Connecting rod bearing bolts | 61 Nm; 6.0 kg·m; 45 ft·lb |
| Flywheel fixing bolts | 75 Nm; 7.5 kg·m; 55 ft·lb |
| Cylinder head | Step 1: 68 Nm; 6.8 kg·m; 50 ft·lb Step 2: 143 Nm; 14.0 kg·m; 105 ft·lb |
| Cylinder head cover bolts | 11 Nm; 1.1 kg·m; 8.1 ft·lb |
Service Data
| Cylinder compression: | 689 kPa (100 psi) |
| Oil system | |
| Lubrication system: | Pressurized lubrication |
| Oil type: | API: SH or SH/CD |
| Recommended oil: | SAE 10W-30 |
| Oil capacity: | With oil filter: 3.8 L (4.02 US. qt, 3.34 Imp. qt.) |
| Oil pressure: | 41.4 kPa (0.4 kg/cm3; 6 psi) at Idle rpm 207-552 kPa (2.1-5.6 kg/cm3; 30-80 psi) at 3,000 rpm |
| Fuel system | |
| Type: | 1992-1996: Multiple-point Fuel Injection System 1997-2003: Sequential Multiport Fuel Injection (SFI) |
| Ignition system | |
| Type: | Electronic ignition system with mechanical distributor |
| Spark plug: | Champion RC12YC |
| Spark plug gap: | 0.9 mm (0.0354 in) |
| Spark plug torque: | 41.0 N·m (4.2 kg·m, 30.2 ft·lb) |
Applications
| Model | Years Produced |
| Dodge Dakota 2.9L | 1992–2003 |
| Dodge Ram Van 2.9L | 1992–2003 |
| Dodge Ram Wagon 2.9L | 1992–2003 |
| Dodge Ram 2.9L | 1992–2001 |
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