General Motors 54° V6 engine

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 four valves per cylinder. All 54° engines were assembled at Ellesmere Port in England.

General Motors 54° V6
Overview
ManufacturerGeneral Motors
Also calledEllesmere V6
Production1994–2004
Layout
Configuration54° V6
Displacement
  • 2.5 L; 152.4 cu in (2,498 cc)
  • 2.6 L; 158.5 cu in (2,597 cc)
  • 3.0 L; 180.8 cu in (2,962 cc)
  • 3.2 L; 193.8 cu in (3,175 cc)
Cylinder bore
  • 81.6 mm (3.21 in)
  • 83.2 mm (3.28 in)
  • 86 mm (3.39 in)
  • 87.5 mm (3.44 in)
Piston stroke
  • 79.6 mm (3.13 in)
  • 85 mm (3.35 in)
  • 88 mm (3.46 in)
Cylinder block materialCast iron
Cylinder head materialAluminium
ValvetrainDOHC 4 valves × cyl.
Compression ratio10.0:1, 10.8:1, 11.5:1
RPM range
Idle speed450–1,030
Max. engine speed6,600
Combustion
TurbochargerGarrett GT15 (in 1997–2003 Saab 9-5)
Fuel systemSequential multi-port fuel injection
Management
  • Bosch Motronic 2.8
  • Saab Trionic T7
Fuel typeGasoline
Oil systemWet sump
Cooling systemWater-cooled
Output
Power output168–220 bhp (125–164 kW; 170–223 PS)
Torque output227–310 N⋅m (167–229 lb⋅ft)
Emissions
Emissions control systemsSecondary air injection, EGR Valve
Chronology
PredecessorOpel CIH
SuccessorHigh Feature V6
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