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The M51 is a water-cooled and turbocharged inline six-cylinder diesel engine with a Bosch VP37-swirl-chamber-injection. [1] [2] [3] The displacement is 2.5 L; 152.4 cu in (2,497 cc) and the compression ratio is 22.0:1. Some engine variants have an intercooler in addition to the turbocharger, they can be identified by the tds. [2]
BMW is well known for its history of inline-six (straight-six) engines, a layout it continues to use to this day despite most other manufacturers switching to a V6 layout. . The more common inline-four and V8 layouts are also produced by BMW, and at times the company has produced inline-three, V10 and V12 engines, BMW also engineered non-production customised engines especially for motorsports ...
For the facelift of the model range in the year 2000, the M52 was replaced by the BMW M54 straight-6 engine [33] and the version used in the 530i model topped the Ward's 10 Best Engines list in 2002 and 2003. [34] The post-facelift V8 models (535i and 540i) continued to use the M62TÜ engine. Specifications for European models are shown below.
It was revised twice during its production time. It is based on its predecessor M51. The block and the crankcase of the first M57 engines and the TÜ (Technische Überarbeitung = revision) engines are made of cast iron, whilst the TÜ2 engines are made of aluminium instead. [1] The combustion chamber was also changed in the TÜ2. [1]
The first BMW M5, based on the E28 5 Series, was manufactured from October 1984 to June 1988. [8] It made its debut at the Amsterdam Motor Show in February 1985. [9] It was based on the 535i chassis with various mechanical changes, most notably the M88/3 engine (shared with the E24 M635CSi grand tourer coupé) which was an updated version of the engine used in the M1 sports car. [8]
The M41 engine was the first four-cylinder diesel engine from BMW. The engine was derived from the six-cylinder BMW M51 engine and shared 86% of its components. This engine became available in several models of the E36: 4-door sedan; 5-door touring; 3-door compact
The BMW M21 is a straight-six diesel engine developed by the German engine manufacturer BMW. It has swirl chamber injection and is based on the M20 petrol engine [1] and was produced for BMW by the Upper Austrian Steyr engine plant from 1983 to 1991. It was succeeded by the M51. [2]
It was powered by the BMW M50 engine and was the first 5 Series to use a rack and pinion steering system. There are two versions of the E34 530i: an inline-six model produced from 1988 to 1990, and a V8 model produced from 1993 to 1995. The earlier model was one of the last applications of the BMW M30 inline-six engine.