Fiat Twin Cam engine

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Fiat Twin Cam engine
Overview
Manufacturer	Fiat/Lancia
Production	1966–2000
Layout
Configuration	Inline-4
Displacement	1.3–2.0 L (1,297–1,995 cc)
Cylinder bore	76 mm (2.99 in) 76.1 mm (3.00 in) 78 mm (3.07 in) 80 mm (3.15 in) 82.6 mm (3.25 in) 84 mm (3.31 in)
Piston stroke	71.5 mm (2.81 in) 79.2 mm (3.12 in) 80 mm (3.15 in) 90 mm (3.54 in)
Cylinder block material	Cast iron
Cylinder head material	Aluminium alloy
Valvetrain	DOHC 2 or 4 valves x cyl.
Combustion
Supercharger	In VX versions
Turbocharger	In some versions
Fuel system	Carburetor, Indirect injection, Direct injection
Fuel type	Gasoline
Cooling system	Water-cooled
Chronology
Successor	Fiat Pratola Serra engine

The Fiat Twin Cam (also known as the Lampredi Twin Cam) is an advanced double overhead camshaft inline-four automobile engine produced from 1966 through 2000 as a Fiat/Lancia engine. Designed by ex Ferrari engineer Aurelio Lampredi, the engine was produced in a large number of displacements, ranging from 1.3 to 2.0 L (1,297 to 1,995 cc) and was used in Fiat, Lancia, Alfa Romeo, SEAT, FSO and Morgan cars. The Fiat Twin Cam engine has been widely used in motorsport and has been the most successful engine in the history of the World Rally Championship. Fiat and Lancia won a total of ten World Rally Championships for Manufacturers using engines based on the Lampredi Twin Cam engine. It was replaced by the Fiat "family B" Pratola Serra engine series.