Jaguar AJ6 engine
The AJ6 (Advanced Jaguar 6-cylinder), and the similar AJ16, were inline-6 piston engines used by Jaguar cars in the 1980s and 1990s. The AJ6 was designed to replace the successful and long-used Jaguar XK6 engine, and was introduced in 1984. It was only the third all-new engine ever designed by the company. The AJ16 evolution was replaced in 1996 with the Jaguar developed AJ-V8 engine.
| Jaguar AJ6 | |
|---|---|
| Overview | |
| Manufacturer | Jaguar Cars |
| Production | 1984–1996 |
| Layout | |
| Configuration | Straight-6 |
| Displacement | 2.9 L (2,919 cc) 3.2 L (3,239 cc) 3.6 L (3,590 cc) 4.0 L (3,980 cc) |
| Cylinder bore | 91 mm (3.58 in) |
| Piston stroke | 74.8 mm (2.94 in) 83 mm (3.27 in) 92 mm (3.62 in) 102 mm (4.02 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | SOHC 2 valves x cyl. DOHC 4 valves x cyl. |
| Compression ratio | 9.75:1 |
| Combustion | |
| Supercharger | Eaton M90 (some versions) |
| Fuel system | Lucas fuel injection |
| Fuel type | Petrol |
| Cooling system | Water cooled |
| Output | |
| Power output | 201–322 hp (150–240 kW; 204–326 PS) |
| Torque output | 325–512 N⋅m (240–378 lb⋅ft) |
| Chronology | |
| Predecessor | Jaguar XK6 |
| Successor | Jaguar AJ-V6 Jaguar AJ-V8 |
Jaguar had considered cutting their existing V12 in half to build a V6, or possibly a V8, but chose instead to develop a new inline six. The cylinders are inclined, as in a slant-6, by 22 degrees. It uses an aluminium block to reduce weight, and has an optional DOHC head for higher efficiency and power.
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