Engine / Cooling
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The BMW M44 is a water-cooled, inline four-cylinder gasoline engine developed by BMW with a displacement of 1895 cc and four-valve technology, based on the BMW M42.
It features two overhead camshafts. The valves are actuated by more speed-stable roller rocker arms instead of the conventional bucket tappets with hydraulic valve clearance adjustment. The duplex roller timing chain was retained.
Due to the longer stroke, a new crankshaft with four instead of eight counterweights was used, which was now cast instead of forged as in the M42. The diameters of the bearing journals remained the same as in the predecessor, which is why the crankshaft drive is often used for tuning purposes. The Differentiated Intake System (DISA) and the Motronic M 5.2 in conjunction with a hot-wire air mass sensor were used.
The M44 was used in the BMW E36, as well as in the BMW Z3 Roadster.
It features two overhead camshafts. The valves are actuated by more speed-stable roller rocker arms instead of the conventional bucket tappets with hydraulic valve clearance adjustment. The duplex roller timing chain was retained.
Due to the longer stroke, a new crankshaft with four instead of eight counterweights was used, which was now cast instead of forged as in the M42. The diameters of the bearing journals remained the same as in the predecessor, which is why the crankshaft drive is often used for tuning purposes. The Differentiated Intake System (DISA) and the Motronic M 5.2 in conjunction with a hot-wire air mass sensor were used.
The M44 was used in the BMW E36, as well as in the BMW Z3 Roadster.