valve timing on both camshafts) and a secondary oil pick-up was added. The compression ratio is 11.3:1 and the redline is 7,600 rpm. Engine management is the Siemens MSS50, with 3 knock sensors. Applications: 1995-1999 E36 M3 (except Canada and the United States) 1996-2000 Z3 M Coupe and M Roadster (except Canada and the United States) See also BMW engines References M50 Straight-six engines Gasoline engines by model