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Motore Alfa Romeo Boxer AR33401 - 1.7 16V IE
1990 - 1996



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Description

The 1.7 16V boxer engine, with electronically controlled injection, is the latest evolution of the Alfa Romeo boxer engine, originally designed and manufactured since the mid-1960s. From 1990 to 1994 it was used in the sportier versions of the Alfa Romeo 33 and later, from 1994 to 1996, in some versions of the Alfa Romeo 145 and 146, with a new the electronic control system.


Technical specifications

ManufacturerAlfa Romeo, Milan, Italy, from 1990 to 1996
TypeAR30746/7 (1990-94) and AR33401 (1994-96)
Descriptionboxer 4-cylinder engine, cast iron cylinder block with heads and pistons made of aluminium alloy
Stroke72.2 mm
Bore87 mm
Displacement1712 cm³
Compression ratio10.0
Power133 hp at 6500 rpm
Torque157 Nm at 4600 rpm
Specific power77.7 hp/litre
Valvetrain system4 valves per cylinder with hydraulic tappets, controlled by two overhead camshafts in each head, driven by toothed belts
Fuel feeding systemmultipoint port fuel (gasoline) injection controlled by an electronic Bosch Motronic ML 4.1 system (starting from 1994 Bosch Motronic M2.10.3), with a throttle valve per cylinder
Ignition systemone spark plug per cylinder, controlled by an integrated (ignition-injection) electronic system
Cooling systemliquid-fed by a centrifugal pump
Lubrication systemforced by a gear pump
Clutchsingle-disc operated by a hydraulic master-slave system
Transmissionwith a 5 speed + RM manual gearbox


Application

Alfa Romeo 33 (1990-1994)

Alfa Romeo 145 and 146 (1994-1996)

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