BMW N43
| BMW N43 engine | |
|---|---|
| Overview | |
| Manufacturer | BMW |
| Production | 2007-2011 |
| Layout | |
| Configuration | straight-4 DOHC |
| Chronology | |
| Predecessor | BMW N46/N45 |
| Successor | BMW N13 |
The BMW N43 is a straight-4 naturally aspirated DOHC engine which was sold from 2006-2013. It replaced the N46 (and related N45),[1] however the N43 was not sold in countries with high sulfur fuel,[2] therefore the N45/N46 engines remained in production alongside the N43.
Compared with its N46 predecessor, the N43 features direct injection.[3]
In 2011, as part of BMW's shift to turbocharging, the N43 was replaced by the turbocharged N13.
Models
| Engine | Displacement | Power | Torque | Year |
|---|---|---|---|---|
| N43B16 | 1,599 cc | 90 kW (121 hp) @ 6000 rpm |
160 N⋅m (118 lb⋅ft) @ 4250 rpm |
2008-2011 |
| N43B20 | 1,995 cc | 90 kW (121 hp) @ 6000 rpm |
185 N⋅m (136 lb⋅ft) @ 3000 rpm |
2007-2011 |
| 110 kW (148 hp) @ 6000 rpm |
200 N⋅m (148 lb⋅ft) @ 4500 rpm | |||
| 127 kW (170 hp) @ 6700 rpm |
210 N⋅m (155 lb⋅ft) @ 4250 rpm |
N43B16
The N43B16 has a 1,599 cc (98 cu in) displacement and produces 90 kW (121 hp) and 160 N⋅m (118 lb⋅ft).[3] It is the successor to the N45 engine and, as per the N45, does not have valvetronic.[4]
Applications:
N43B20
The N43B20 has a 1995 cc displacement and produces up to 127 kW (173 PS; 170 hp) and 210 Nm.[3][4]
In 2009, the 2.0 litre N43B20 replaced the 1.6 litre N43B16 in the 116i. Power remained at 90 kW (121 hp), however torque was increased. The N43 in all its forms is a non Valvetronic engine and has a number of problems in service - these include oil leaks, timing chain and tensioner breakage, coil pack and injector troubles as well as crankshaft bearing trouble often thought to be due to the electronic oil pressure solenoid failing.
Applications:
90 kW (121 hp) and 185 N⋅m (136 lb⋅ft) version
- 2009-2011 E81/E87 116i
110 kW (148 hp) and 190 N⋅m (140 lb⋅ft) version
- 2007-2011 E90/E91/E92/E93 318i
- 2008-2011 E81/E87/E88 118i
127 kW (170 hp) and 210 N⋅m (155 lb⋅ft) version
- 2007-2011 E81/E82/E87/E88 120i
- 2007-2011 E90/E91/E92/E93 320i
- 2007-2009 E60/E61 520i
See also
References
- ^ "BMW 116i now powered by 2.0L N46 Valvetronic". www.paultan.org. Retrieved 3 June 2012.
- ^ "BMW N43, N45 and N46 Four Cylinder Valvetronic Engines". www.unixnerd.demon.co.uk. Retrieved 1 April 2017.
- ^ a b c "Engine specifications for N43 engines". www.bmwheaven.com. Retrieved 3 June 2012.
- ^ a b "BMW N43B16 Engine". www.mywikimotors.com. Retrieved 1 April 2017.