Chrysler 3.9L (239 CID) Magnum V6

Chrysler 239 MagnumThe 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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