The 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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