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X25XE

54° V6
3.0 V6.jpg
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
  • B258I
  • X25XE
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
  • B308
  • B308I
  • L81
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
  • 10.0:1
  • 10.8:1
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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