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BMW N42 Engine

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BMW N42 Engine For Sale

This engine was an in-line 4 cylinder available in 1.8 and 2 liter displacements. In this sense, this engine marks the return of the propeller house, after almost 25 years, of a 2-liter unit split into 4 cylinders. The latest was the 2-liter unit of the M10 family, fitted until 1977 on the BMW 320 and BMW 520.

This engine replaces the two M43 and M44 engines. The new engine is characterized by the presence of the new VANOS double variable valve timing system, which acts on both the intake and exhaust valves. In any case, the distribution was double camshaft in head driven by chain and 4 valves per cylinder. Still with regard to distribution, this engine introduces the Valvetronic system, which, working together with the double VANOS, ensures a continuous variation of the timing of the two camshafts according to the engine load. Power was adBosch DME ME9.2 electronic injection.

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N42B18 This engine, which in 2001 was awarded the Engine of the Year award in the 1.4-1.8 liter category, was derived directly from the 1.8 M42, of which it maintained the bore and stroke measurements (84x81 mm ), and therefore had the same displacement of 1796 cm³. The power maximum was 115 hp at 5500 rev / min, with a torque maximum of 175 Nm at 3750 r / min. This engine was mounted on: BMW 316ti E46 Compact ; BMW 316i E46 ( sedan and SW ). N42B20 This engine is the 2-liter variant of the former, with respect to which the stroke has been extended from 81 to 90 mm, with a total displacement of 1995 cc. Another important difference with the 1.8-liter unit of the same family was the presence of two balance shafts to drastically reduce engine vibrations. The maximum power was of 143 hp at 6000 rev / min, with a maximum peak torque of 200 N · m to 3750 rev / min. This engine was mounted on: BMW 318ti Compact E46 ; BMW 318i / 318Ci E46.