BMW M88

The BMW M88 was a double overhead camshaft straight-six petrol engine produced from 1978 to 1989 and based on the DOHC version of the M49 engine used in the 3.0CSi racing cars. It ran beside the M30 as the higher-performance engine, North America received the S38 instead until 1989, and in 1989 an updated S38 became its worldwide replacement. BMW engineers used a double overhead camshaft valvetrain on a production engine for the first time in the M88, with the camshafts driven by a single-row timing chain, Kugelfischer fuel injection and six individual throttle bodies. It has an aluminium head and cast iron block with a 93.4 millimetre bore and 84.0 millimetre stroke, giving 3,453 cc. The original M88 powered the M1 from 1978 to 1981 with 204 kW and a dry sump, and the bored-out M88/1 raced in the M1 Procar series.