GM 54-Degree V6 engine
| 54° V6 | |
|---|---|
 |
|
| Overview | |
| Manufacturer | General Motors |
| Also called | Ellesmere V6 |
| Production | 1994-2004 |
| Combustion chamber | |
| Configuration | 54° V6 |
| Cylinder block alloy | Cast iron |
| Cylinder head alloy | Aluminium |
| Valvetrain | Dual overhead cam |
| Combustion | |
| Fuel system | Sequential multi-port fuel injection |
| Fuel type | Gasoline |
| Oil system | Wet sump |
| Cooling system | Water-cooled |
| Chronology | |
| Predecessor | Opel CIH |
| Successor | High Feature V6 |
| C25XE | |
|---|---|
| Overview | |
| Also called |
|
| Combustion chamber | |
| Displacement | 2,498 cc (152.4 cu in) |
| Cylinder bore | 81.6 mm (3.213 in) |
| Piston stroke | 79.6 mm (3.134 in) |
| Compression ratio | 10.8:1 |
| Combustion | |
| Management | |
| X30XE | |
|---|---|
| Overview | |
| Also called |
|
| Combustion chamber | |
| Displacement | 2,962 cc (3.0 L; 180.8 cu in) |
| Cylinder bore | 86 mm (3.386 in) |
| Piston stroke | 85 mm (3.346 in) |
| Compression ratio |
|
| Combustion | |
| Management | |
| Y26SE | |
|---|---|
| Overview | |
| Also called | LY9 |
| Combustion chamber | |
| Displacement | 2,597 cc (2.6 L; 158.5 cu in) |
| Cylinder bore | 83.2 mm (3.276 in) |
| Piston stroke | 79.6 mm (3.134 in) |
| Compression ratio | 10.0:1 |
| Output | |
| Power output | 134 kW (180 hp) |
| Torque output | 240 N·m (177 lb·ft) |
| Y32SE | |
|---|---|
| Overview | |
| Also called | LA3 |
| Combustion chamber | |
| Displacement | 3,175 cc (3.2 L; 193.8 cu in) |
| Cylinder bore | 87.5 mm (3.445 in) |
| Piston stroke | 88 mm (3.465 in) |
| Compression ratio | 10.0:1 |
| Output | |
| Power output | 164 kW (220 hp) |
| Torque output | 296 N·m (218 lb·ft) |
General Motors' Opel subsidiary in Europe designed a compact V6 engine with an unusual 54° vee angle. It was an iron block/aluminum head DOHC design with 4 valves per cylinder. All 54° engines were assembled at Ellesmere Port in England.
In the early 1990s, Opel identified the need for a modern, lightweight and compact power plant to replace its ageing straight-6 engine range. These engines have a cast iron engine block with cast aluminium alloy cylinder heads. The cylinder heads contain 4 valves per cylinder actuated by dual overhead camshafts which are driven by a timing belt. These engines however, differed from many modern V6 engines in that it has a 54 degree cylinder bank angle; as opposed to the more conventional 60 degree setup. This added to the engines' compactness which was needed to allow its use in front-wheel drive applications, as well as rear-wheel drive cars. Other features of these engines include: an oil to water heat exchanger is mounted within the V of the engine block, Bosch Motronic engine management system with full sequential fuel injection, knock control on each bank, distributorless ignition system (DIS), and closed loop lambda control.
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