The Alfa Romeo 690 engine is a custom-built, production-based, high-revving, prototype,

four-stroke A four-stroke (also four-cycle) engine is an internal combustion (IC) engine in which the piston completes four separate strokes while turning the crankshaft. A stroke refers to the full travel of the piston along the cylinder, in either directio ...

, 2.5-liter,

naturally aspirated A naturally aspirated engine, also known as a normally aspirated engine, and abbreviated to N/A or NA, is an internal combustion engine in which air intake depends solely on atmospheric pressure and does not have forced induction through a turboc ...

, V6

racing In sports, racing is a competition of speed, in which competitors try to complete a given task in the shortest amount of time. Typically this involves traversing some distance, but it can be any other task involving speed to reach a specific g ...

engine An engine or motor is a machine designed to convert one or more forms of energy into mechanical energy. Available energy sources include potential energy (e.g. energy of the Earth's gravitational field as exploited in hydroelectric power ge ...

, designed, developed and produced by

Alfa Romeo Alfa Romeo Automobiles S.p.A. () is an Italian carmaker known for its sports-oriented vehicles, strong auto racing heritage, and iconic design. Headquartered in Turin, Italy, it is a subsidiary of Stellantis Europe and one of 14 brands of mu ...

, purpose-built for the

1996 1996 was designated as: * International Year for the Eradication of Poverty Events January * January 8 – A Zairean cargo plane crashes into a crowded market in the center of the capital city of the Democratic Republic of the Congo ...

ITC season. It was loosely based on the

PRV engine The V6 PRV engine is an overhead cam V6 automobile engine designed and manufactured by the company "Française de Mécanique" for PRV, an alliance of Peugeot, Renault and Volvo Cars. Sold from 1974 to 1998, it was produced in four displacemen ...

, used in the Lancia Thema 6v.

Applications

* 1996 Alfa Romeo 155 V6 TI

References

V6 engines Alfa Romeo engines Gasoline engines by model Piston engines Internal combustion engine {{auto-part-stub