The Chrysler 318 Magnum is a 5.2 L (5,210 cc, 318 cu·in) natural aspirated V8 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 5.2 L (318 cu in) Magnum V6 engine a total of 5,210 cm3 of displacement. The compression ratio rating is 9.1:1.
This engine produced 234 PS (172 kW; 230 HP) at 4,100 rpm of horsepower and 400 N·m (40.8 kg·m, 294.8 ft·lb) at 3,000 rpm of peak torque.
The Chrysler 318 Magnum V8 engine features:
- Eight-cylinder V-type 90°
- Cast-iron cylinder block and heads
- Nodular iron crankshaft and camshaft
- Aluminum alloy pistons with two compression and single oil ring
- Forged steel connecting rons
- OHV design with single camshaft
- Electronic ignition system with mechanical distributor
- Multiple-point fuel injection system
General information
| Engine Specifications | |
| Engine model | 5.2 Magnum |
| Engine type | 4-stroke, OHV, V8 90° |
| Displacement | 5.2 L, 5,211 cm3, (318 cu·in) |
| Max. horsepower | 234 PS (172 kW; 230 HP) at 4,100 rpm |
| Max. torque | 400 N·m (40.8 kg·m, 294.8 ft·lb) at 3,000 rpm |
| Cooling system | Liquid-cooled |
| Lubricating system | Pressurized lubrication |
| Ignition system | Electronic ignition system with mechanical distributor |
| Fuel system | Multiple-point fuel injection system |
| Fuel used | Unleaded gasoline (octane number 86 or higher) |
| Firing order: | 1-8-4-3-6-5-7-2 |
| 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: | 5 |
| 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 (16 valves in total) |
| Intake timig: | 250° |
| Exhaust timig: | 264° |
| 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: 4.7 L (5.0 US. qt, 4.14 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: | Multiple-point fuel injection system |
| 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 5.2L | 1992–2000 |
| Dodge Ram 5.2L | 1992–2001 |
| Dodge Durango 5.2L | 1998–2000 |
| Dodge Ramcharger 5.2L | 1992–1993 |
| Dodge Ram Van 5.2L | 1992–2003 |
| Jeep Grand Cherokee ZJ 5.2L | 1993–1998 |
Author:
Be the first to comment