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In 2012, a "Technical Update" was applied to the N63, resulting in the N63TU variants (also known as N63B44O1).The main upgrade was the addition of Valvetronic. [11] [12] Other changes include revised turbochargers, removal of the blowoff valve, lighter pistons, forged connecting rods and crankshaft, addition of a valve cover labyrinth oil catch/return system, new valve stem seals, revised ...
The first refinement in crankcase ventilation was the road draught tube. This is a pipe running from the crankcase (or the valve cover on an overhead valve engine) down to a downwards-facing open end located in the vehicle's slipstream. When the vehicle is moving, airflow across the open end of the tube creates suction (a "draught" or draft ...
The BMW N52 is a naturally aspirated straight-6 petrol engine which was produced from 2004 to 2015. The N52 replaced the BMW M54 and debuted on the E90 3 Series and E63 6 Series . The N52 was the first water-cooled engine to use magnesium/aluminium composite construction in the engine block. [ 1 ]
The BMW M56 is a 2.5-liter 184-PS (135 kW; 181 bhp) straight-six engine. It is a re-engineered version of the BMW M54B25 engine, manufactured in order to meet SULEV regulations in US states until 2006. The M56 was replaced by the BMW N54, which was BMW's first mass-produced turbocharged petrol engine.
The BMW N62 is a naturally aspirated V8 petrol engine which was used in BMW cars from 2001 to 2010. It also remained in small-scale production for the Morgan Aero until 2019. [1] The N62 is the world's first engine to use a continuously variable-length intake manifold, [2] and BMW's first V8 to feature variable valve lift (called Valvetronic ...
Compared with the M40, the M42 features a DOHC valvetrain, a timing chain, hydraulic valve lifters and an increased 10.0:1 compression ratio. [2] Later versions of the M42 also feature a dual length intake manifold ("DISA"). [2] The M42 was used as the basis for the S42 racing engine, which powered the BMW 320i in the German Super Tourenwagen Cup.