BMW S14
Engine
The BMW S14 is a DOHC four-cylinder petrol engine which was used in the E30 M3, E30 320iS, and E36 318i Super Touring. It is based on the BMW M10 block and the cylinder head from the six-cylinder BMW S38 with two cylinders removed. The direct... Wikipedia
Cylinder block material: Cast iron
Cylinder bore: 93.4 mm (3.68 in); 95 mm (3.74 in)
Cylinder head material: Aluminium
Displacement: 2.0 L (1,990 cc); 2.3 L (2,302 cc); 2.5 L (2,467 cc)
Piston stroke: 72.6 mm (2.86 in); 84 mm (3.31 in); 87 mm (3.43 in)