BMW M52

The BMW M52 is a straight-six gasoline engine of the car manufacturer BMW and was introduced in September 1994 as a successor to the M50 engine. He came the first time in the BMW E36 as 320i/323i/328i used.

From the M50 cylinder spacing and hole and the camshaft adjustment VANOS and the cylinder-selective knock control were taken over. All other parts were either revised or are completely new. The engine block of the M52 was now poured into a closed- deck design from the same aluminum alloy as the cylinder head, while the M50 had a cast iron block. The crankcase has only the opening for cylinders, oil and water channels. The engine block was so relieved by 22.7 kg.

The connecting rods were facilitated by 80 grams per piece, spring plate and cup tappets also speckten, so that the weight of the cylinder head declined by 32% or 1.6 kg. The weight reduction continued through the chain tensioner, which was facilitated by 60 %, to the stainless steel manifold which replaced the twice as heavy cast iron part. Overall, the 2.8 -liter M52 engine saved as a 31 kg compared with the 2.5 -liter M50. At the launch of the BMW E46 ( in February 1998) the M52 has been technically revised ( M52TU ). These engines possessed among other things, double - Vanos and additional catalysts in the exhaust manifolds. From September 1998, the technically revised version was installed in the BMW E39. The engines were replaced by the BMW M54.

Building on the M52 sport S52 engine was developed, which was (as opposed to other sports motors without individual throttle injection ) is used only in the lower-performing U.S. version of the BMW E36 M3. This served as the basis (block ) for the Alpina B3.3 and B3.4 based on the BMW E46.

Data

Use

M52B20

M52TUB20

M52B25

M52TUB25

M52B28

M52TUB28

S52B32

• BMW engine
• Motor model ( series motor)