Hyundai Omega engine
The Omega Ω is a V8 engine produced by Hyundai Motor Company. It is a dual overhead cam design with electronic multiport fuel injection or Gasoline Direct Injection.
| Ω-engine  Omega engine | |
|---|---|
| Overview | |
| Manufacturer | Hyundai Motor Company | 
| Production | 1999–2008 | 
| Layout | |
| Configuration | V8 | 
| Displacement | 4.5 L (4,498 cc) | 
| Cylinder bore | 86 mm (3.39 in) | 
| Piston stroke | 96.8 mm (3.81 in) | 
| Block material | Aluminium | 
| Valvetrain | DOHC | 
| Compression ratio | 10.7:1 | 
| Combustion | |
| Fuel system | Multi-port fuel injection Direct injection | 
| Fuel type | Gasoline | 
| Cooling system | Water-cooled | 
| Output | |
| Power output | 260–270 PS (191–199 kW; 256–266 hp) | 
| Torque output | 37.6–38.8 kg⋅m (369–380 N⋅m; 272–281 lbf⋅ft) | 
| Chronology | |
| Successor | Tau | 
GDi
    
    4.5L (G8AA)
    
The G8AA (also called the 4.5D) displaces 4.5 L (4498 cc) with a 86 mm (3.4 in) bore, 96.8 mm (3.81 in) stroke and a 10.7:1 compression ratio. Output is 260 PS (191 kW; 256 hp) at 5,500 rpm and 38.8 kg⋅m (380 N⋅m; 281 lbf⋅ft) of torque at 3,500 rpm. The dry weight of the engine is 236 kg (520 lb).
- Applications
- Hyundai Equus (1999–2003)
MPi
    
    4.5L (G8AB)
    
The G8AB displaces 4.5 L (4498 cc) with a 86 mm (3.4 in) bore, 96.8 mm (3.81 in) stroke. Output is 270 PS (199 kW; 266 hp) at 5,500 rpm and 38 kg⋅m (373 N⋅m; 275 lbf⋅ft) of torque at 4,500 rpm or 268 PS (197 kW; 264 hp) at 5,500 rpm and 37.6 kg⋅m (369 N⋅m; 272 lbf⋅ft) of torque at 4,000 rpm.
- Applications
- Hyundai Equus (1999–2008)