Alfa Romeo 690 engine
| Alfa Romeo 690 engine | |
|---|---|
| Overview | |
| Manufacturer | Alfa Romeo |
| Also called | Alfa Romeo 690RC |
| Production | 1996 |
| Layout | |
| Configuration | Naturally aspirated 90° V6 |
| Displacement | 2,498–2,500 cc (2–3 L; 152–153 cu in) |
| Cylinder bore | 88–93 mm (3.5–3.7 in) |
| Piston stroke | 61.3–68.3 mm (2.41–2.69 in) |
| Valvetrain | 24-valve, DOHC, four-valves per cylinder |
| Compression ratio | 12.5:1 |
| Combustion | |
| Fuel system | Fuel injection |
| Oil system | Dry sump |
| Output | |
| Power output | 400–500 hp (298–373 kW) @ 11,500-11,900 rpm |
| Torque output | 217–220 lb⋅ft (294–298 N⋅m) @ 7,700-8000 rpm |
| Dimensions | |
| Length | 900 millimetres (35 in) |
| Width | 885 millimetres (34.8 in) |
| Height | 485 millimetres (19.1 in) |
| Dry weight | 85–110 kg (187–243 lb) |
The Alfa Romeo 690 engine is a custom-built, production-based, high-revving, prototype, four-stroke, 2.5-liter, naturally aspirated, V6 racing engine, designed, developed and produced by Alfa Romeo, purpose-built for the 1996 ITC season. It was loosely based on the PRV engine, used in the Lancia Thema 6v.