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Alfa Romeo Boxer engine

Alfa Romeo Boxer engine
Motor po nehode.jpg
Overview
Manufacturer Alfa Romeo
Production 1971–1997
Combustion chamber
Configuration DOHC 2/4-valve H4
Displacement
  • 1,186 cc
  • 1,286 cc
  • 1,351 cc
  • 1,490 cc
  • 1,596 cc
  • 1,712 cc
Cylinder block alloy Cast iron
Cylinder head alloy Aluminium alloy
Combustion
Fuel system 1 or 2 carburetors
Bosch LE 3.1 Jetronic
Fuel type Petrol
Oil system 4-4.5 L
Cooling system Water cooled
Output
Power output 63 PS (46 kW)–137 PS (101 kW)
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 all Alfa Romeo front-wheel drive cars up to 1996. In 1997 it was phased out and replaced by the transverse-mounted Twin Spark engines.

This liquid-cooled, four cylinder, boxer (horizontally opposed) engine had a belt-driven water pump. Its integrated cast iron cylinder block and crankcase had three main bearings. The two aluminum alloy crossflow cylinder heads had one overhead camshaft in each, driven by individual timing belts, and two valves per cylinder (four valves per cylinder in the 1700 16V version). Wet sump lubrication.

The fuel delivery system depended on version: a single-barrel downdraft carburetor; one or two double-barrel downdraft carburetors; or Bosch LE 3.1 Jetronic fuel injection.

The original engine displaced 1.2 L (1,186 cc) with an 80 mm bore and 59 mm stroke and produced between 63 and 77 PS (46 and 57 kW).

Applications:

The engine was stroked (to 64 mm) to create the 1.3 L (1,286 cc) version. This engine produced 68–75 PS (50–55 kW).

Applications:


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Wikipedia

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