The BMW M42 is a DOHC 16-valve I4 piston engine first built for the 1991 model year E30 318is. The engine block is based on the BMW M40, as used on the 318i, but had features such as a timing chain, double overhead cams, hydraulic valve lifters, and an increased 10:1 compression ratio.
Profile gaskets on M42s built before 1993 are known to fail prematurely.
M42B18
Displacement for the M42B18 was 1.8 L (1796cc). It produced 136 hp and 172 ft.lbf using Bosch M1.7 fuel injection.
Applications:
See also
External links
Review of the 1991 318is
Detailed description of engine
