BMW N42

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BMW N42 engine
Overview
Manufacturer BMW
Production 2001–2004
Combustion chamber
Configuration straight-4 DOHC
Chronology
Predecessor BMW M43
Successor BMW N46

The BMW N42 is a straight-4 DOHC piston engine[1] which replaced the M43 and was produced from 2001-2004.[2]

Compared with its M43 predecessor, the N42 features a DOHC valvetrain and variable valve timing (called VANOS by BMW). It was the first BMW engine to feature variable valve lift (called valvetronic by BMW).[3][4] The N42 serves as the basis for the smaller N40 engine (which does not have valvetronic).

The N42B18 won the 1.4-1.8 L category of the International Engine of the Year competition for 2001.[5]

In 2004, the N42 was replaced by the N46 engine.

Models[edit]

Engine Displacement Power Torque Redline Year
N42B18 1,796 cc 85 kW (116 PS; 114 hp) @ 5500 175 N·m (129 lb·ft) @ 3750 6500 2001-2004
N42B20 1,995 cc 105 kW (143 PS; 141 hp) @ 6000 200 N·m (148 lb·ft) @ 3750 6500 2001-2004

N42B18[edit]

The N42B18 has a displacement of 1796 cc,[1] uses Bosch DME ME9.2 fuel injection[6] and has twin-balancing shafts.[citation needed]

Applications:

  • 2001-2004 E46 316i and 316ti

N42B20[edit]

The N42B20 has a displacement of 1995 cc,[1] uses Bosch DME ME9.2 fuel injection and has twin-balancing shafts.[citation needed]

Applications:

See also[edit]

References[edit]

  1. ^ a b c "Engine specifications for N42 engines". www.bmwheaven.com. Retrieved 2012-06-03. 
  2. ^ "3'E46 318ci model selection". www.realoem.com. Retrieved 16 March 2017. 
  3. ^ "BMW N42 Four Cylinder Valvetronic Engine". www.unixnerd.demon.co.uk. Retrieved 22 March 2017. 
  4. ^ "Valve timing gear, cntrl unit Valvetronic BMW 3' E46, 318Ci (N42) — BMW parts catalog". www.bmwfans.info. Retrieved 3 June 2012. 
  5. ^ "Archive". www.ukimediaevents.com. Retrieved 22 March 2017. 
  6. ^ "BMW 3 2006 / E46". www.obdtester.com. Retrieved 22 March 2017.