Alfa Romeo Twin Spark engine
Alfa Romeo Twin Spark (TS) technology was used for the first time in the Alfa Romeo Grand Prix car in 1914. In the early 1960s it was used in their race cars (GTA, TZ) to enable it to achieve a higher power output from its engines. And in the early and middle 1980s, Alfa Romeo incorporated this technology into their road cars to enhance their performance and to comply with stricter emission controls.
| Alfa Romeo Twin Spark engine | |
|---|---|
| Overview | |
| Manufacturer | Alfa Romeo Auto (1986) Alfa Lancia Industriale (1987-1991) Fiat Auto (1991-2005) Fiat Powertrain Technologies (2005-2009) |
| Production | 1986–2009 |
| Layout | |
| Configuration | Naturally aspirated straight-4 |
| Displacement | 1.4 L (1,370 cc) 1.6 L (1,598 cc) 1.7 L (1,747 cc) 1.7 L (1,749 cc) 1.8 L (1,773 cc) 2.0 L (1,962 cc) 2.0 L (1,970 cc) 2.0 L (1,995 cc) |
| Cylinder block material | Aluminium (Alfa Romeo Twin Cam engine) and cast iron (Fiat Pratola Serra modular engines) |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 2/4 valves per cylinder |
| Combustion | |
| Fuel system | Carburetor, Fuel injection |
| Fuel type | Petrol |
| Chronology | |
| Predecessor | Alfa Romeo Twin Cam |
| Successor | Alfa Romeo JTS engine |
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