Alfa Romeo Boxer engine

Alfa Romeo Boxer engine
Alfa Romeo Boxer engine
Overview
Manufacturer	Alfasud (Alfa Romeo) (1971-1986); Alfa-Lancia Industriale (1987-1991); Fiat Auto (1991-1997)
Production	1971–1997
Layout
Configuration	Naturally aspirated Flat-4
Displacement	1.2 L (1,186 cc); 1.3 L (1,286 cc); 1.4 L (1,351 cc); 1.5 L (1,490 cc); 1.6 L (1,596 cc); 1.7 L (1,712 cc);
Cylinder bore	80 mm (3.15 in); 84 mm (3.31 in); 87 mm (3.43 in);
Piston stroke	59 mm (2.32 in); 64 mm (2.52 in); 67.2 mm (2.65 in); 72 mm (2.83 in);
Cylinder block material	Cast iron
Cylinder head material	Aluminium alloy
Valvetrain	DOHC 2 or 4-valve
Combustion
Fuel system	1 or 2 carburetors; Fuel injection
Management	Bosch LE 3.1 Jetronic or Motronic ML 4.1
Fuel type	Petrol
Oil system	4–4.5 L (4.2–4.8 US qt; 3.5–4.0 imp qt)
Cooling system	Water-cooled
Output
Power output	63–137 PS (46–101 kW)
Emissions
Emissions control systems	Catalytic converter (on 1700 16V)
Chronology
Successor	Twin Spark engine

The Alfa Romeo Boxer engine was a water-cooled flat-4 piston engine developed by Alfa Romeo for front-wheel drive, longitudinal applications. It debuted on the Alfasud, which was introduced in 1971 at the Turin Motor Show. In the following decades the Boxer went through several upgrades and powered many Alfa Romeo front-wheel drive cars up to 1996 (not the 164). In 1997 it was phased out and replaced by the transversely-mounted Twin Spark engines.

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