Chrysler PowerTech 3.7L EGK

Chrysler PowerTech 3.7L EGKThe Chrysler PowerTech 3.7L EGK (also known as Dodge 3.7L Magnum) is a 3.7 L (3,703 cc, 226.0 cu·in) natural aspirated V6 90° four-stroke liquid-cooled internal combustion gasoline engine, manufactured by Chrysler in Detroit, Michigan, USA from 2002 up to 2012.

A 93.0 mm (3.66 in) cylinder bore and 90.8 mm (3.57 in) piston stroke give the 3.7 L (226 cu·in) PowerTech V6 engine a total of 3,703 cm3 of displacement. The compression ratio rating is 9.6:1.

This engine produced 213.5 PS (157 kW; 210.5 HP) at 5,200 rpm of horsepower and 319 N·m (32.5 kg·m, 235.1 ft·lb) at 4,000 rpm of peak torque.

The Chrysler PowerTech 3.7L EGK V6 engine features:

  • Six-cylinder V-type 90°
  • Cast-iron cylinder block
  • Aluminum cylinder heads with SOHC design
  • Nodular cast-iron iron crankshaft with six counterweights
  • Electronic ignition system with a separate ignition coil for each cylinder
  • Sequential multiport fuel injection system

General information

Engine Specifications
Engine model PowerTech 3.7L EGK / Dodge 3.7L Magnum
Engine type 4-stroke, SOHC, V6 90°
Displacement 3.7 L, 3,703 cm3, (226.0 cu·in)
Max. horsepower 213.5 PS (157 kW; 210.5 HP) at 5,200 rpm
Max. torque 319 N·m (32.5 kg·m, 235.1 ft·lb) at 4,000 rpm
Cooling system Liquid-cooled
Lubricating system Pressurized lubrication
Ignition system Electronic ignition system with a separate ignition coil for each cylinder
Fuel system 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: 9.6:1
Cylinder bore: 93.0 mm (3.66 in)
Piston stroke: 90.8 mm (3.57 in)
Cylinder internal diameter (standard): 92.940-93.090 mm (3.659-3.665 in)
Piston skirt outer diameter (standard): 92.975 mm (3.6604 in)
Number of piston rings (compression / oil): 2/1
Piston pin diameter: 24.017-24.020 mm (0.9455-0.9457 in)
Side clearance (Top): 0.051-0.094 mm (0.002-0.0037 in)
Side clearance (Second): 0.040-0.080 mm (0.0016-0.0031 in)
Side clearance (Oil): 0.019-0.229 mm (0.0007-0.009 in)
Ring end gap (Top): 0.200-0.360 mm (0.0079-0.0142 in)
Ring end gap (Second): 0.370-0.630 mm (0.0146-0.0248 in)
Ring end gap (Oil): 0.250-0.760 mm (0.0098-0.0299 in)
Ring width (Top): 1.472-1.490 mm (0.058-0.0587 in)
Ring width (Second): 1.472-1.490 mm (0.058-0.0587 in)
Ring width (Oil): 0.445-0.470 mm (0.0175-0.0185 in)
Number of main bearings: 4
Crankshaft main journal diameter: 63.488-63.512 mm (2.4995-2.5005 in)
Crankpin journal diameter: 57.892-57.908 mm (2.2792-2.2798 in)
Crankshaft center distance: 45.4 mm (1.785 in)
Cylinder head
Cylinder head alloy: Aluminium
Valve arrangement: SOHC, chain driven
Valves: 2,(12 valves in total)
Intake timig: 245.7°
Exhaust timig: 261.6°
Valve head diameter (INTAKE): 48.520-48.780 mm (1.9102-1.9205 in)
Valve head diameter (EXHAUST): 36.870-37.130 mm (1.4516-1.4618 in)
Valve length (INTAKE): 113.450-114.210 mm (4.4665-4.4964 in)
Valve length (EXHAUST): 114.920-115.68 mm (4.5244-4.5543 in)
Valve steam diameter (INTAKE): 6.931-6.957 mm (0.2729-0.2739 in)
Valve steam diameter (EXHAUST): 6.902-6.928 mm (0.2717-0.2728 in)
Valve spring free length (INTAKE): 48.180 mm (1.8968 in)
Valve spring free length (EXHAUST): 48.200 mm (1.8976 in)

Service Data

Cylinder compression: 1172-1551 kPa (170-225 psi)
Oil system
Lubrication system: Forced lubrication
Oil type: API: Diamler-Chrysler Mopar or equivalent
Recommended oil: SAE 5W-30 (SAE 5W-20 after 2007)
Oil capacity: 4.7 L (4.97 US. qt, 4.14 Imp. qt.)
Oil change interval: 10,000 km (6,000 miles)
Oil pressure: 25 kPa (4 psi) at Idle
170-758 kPa (170-758 psi) at 3,000 rpm
Fuel system
Type: Sequential Multiport Fuel Injection (SFI)
Ignition system
Type: Electronic ignition system with separate ignition coil for each cylinder
Spark plug: NGK ZFR6F-11G
Spark plug gap: 1.1 mm (0.0433 in)
Spark plug torque: 27 N·m (2.8 kg·m, 19.9 ft·lb)

Applications

Model Years Produced
Dodge Ram 1500 4.7L 2002–2010
Ram 1500 2011-2012
Dodge Dakota 4.7L 2004–2011
Dodge Durango 4.7L 2004–2009
Dodge Nitro 4.7L 2007–2011
JJeep Liberty 4.7L 2002–2013
Jeep Cherokee 4.7L 2002–2013
Jeep Grand Cherokee 4.7L 2005–2010
Jeep Commander 4.7L 2006–2010
Mitsubishi Raider 4.7L 2006–2010
Dodge M80 4.7L 2002

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