BMW M50

BMW M50 engine
Overview
Production1990–1996
Layout
ConfigurationStraight-6
Displacement1,991 cc (121 cu in)
2,394 cc (146 cu in)
2,494 cc (152 cu in)
Cylinder bore80 mm (3.1 in)
84 mm (3.3 in)
Piston stroke66 mm (2.6 in)
72 mm (2.8 in)
75 mm (3.0 in)
Cylinder block materialCast iron
Cylinder head materialAluminium
ValvetrainDOHC,
VVT ("TÜ" versions only)
Combustion
Fuel typePetrol
Chronology
PredecessorBMW M20
SuccessorBMW M52

The BMW M50 is a straight-6 DOHC petrol engine which was produced from 1990 to 1996. It was released in the E34 520i and 525i, to replace the M20 engine.[1]

In September 1992, the M50 was upgraded to the M50TÜ (Technische Überarbeitung, "technical revision"). This was BMW's first engine to use variable valve timing.[2] Called single VANOS by BMW, the system adjusted the phasing of the intake camshaft.[3]

The M50 began to be phased out following the introduction of the M52 engine in 1994.

The E36 M3 is powered by the S50 engine series, which is a high output version of the M50.

  1. ^ "BMW 5 Series E34 History and Characteristics". www.bmwguide.net. 16 February 2015. Retrieved 27 October 2017.
  2. ^ "Diagnosing a Failing BMW Vanos System". www.bmwn54tuners.com. 5 December 2017. Retrieved 15 December 2018.
  3. ^ "BMW M50 engine". www.usautoparts.net. Archived from the original on 2012-05-12.