BMW N52
Engine
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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... Wikipedia
Compression ratio: 10.7:1
Cylinder block material: Magnesium-Aluminium
Cylinder head material: Aluminium
Displacement: 2,497 cc (152 cu in); 2,996 cc (183 cu in)
Piston stroke: 78.8 mm (3.10 in); 88 mm (3.5 in)
Successor: BMW N53