BMW M43
| BMW M43 | |
|---|---|
| Overview | |
| Manufacturer | BMW |
| Production | 1991–2002 |
| Layout | |
| Configuration | SOHC Straight-4 |
| Chronology | |
| Predecessor | BMW M40 |
| Successor | BMW N42 |
The BMW M43 is a straight-4 SOHC piston engine which replaced the M40 and was produced from 1991-2002.[1] Displacement ranges from 1.6 L to 1.9 L. The M43 powered base-model cars, while higher performance models at the time were powered by the DOHC M42 (and its M44 successor).
A variant using natural-gas was produced for the E36 318g and the E34 518g.
Compared with its M40 predecessor, it features a dual length intake manifold[2] (called "DISA" by BMW) to provide torque across a wider rev range,[3] knock sensing[4] and a timing chain (instead of the M40's timing belt).[5][6]
The M43 was produced at the Steyr engine plant.[7] A total of 1,204,734 units were produced.
In 1998 the displacement was increased to 1.9 litres, increasing torque to 180 Nm at 3900 rpm.[1]
Models
| Engine | Displacement | Power | Torque | Redline | Year |
|---|---|---|---|---|---|
| M43B16 | 1596 cc | 75 kW (105 hp) @ 5500 | 150 N·m (111 lb·ft) @ 3900 | 6200 | 1991 |
| M43B18 | 1796 cc | 85 kW (115 hp) @ 5500 | 168 N·m (124 lb·ft) @ 3900 | 6200 | 1993 |
| M43B19 | 1895 cc | 87 kW (118 hp) @ 5500 | 180 N·m (133 lb·ft) @ 3900 | 6200 | 1998 |
| 77 kW (105 hp) @ 5300 | 165 N·m (122 lb·ft) @ 2500 | 6200 | 1999 |
M43B16
The 1.6 L (1596cc) M43B16 produces 102 hp and 150 Nm. It uses the Bosch Motronic 1.7.1 fuel injection system.[8]
Applications:
- 1993-1999 E36 316i
- 1994-1998 E36 316i Compact
- 1998-2001 E46 316i
M43B18
The M43B18 has a 1796 cc displacement. It produces 115 hp and 168 Nm and uses the Bosch Motronic 1.7.1 fuel injection system.[8]
Applications:
M43B19
The M43B19 (also known as the "M43TÜ") is the largest M43 engine, with a displacement of 1895 cc. It produces up to 118 hp and 180 Nm and uses BMW BMS 46 fuel injection system.[8]
M43B19 Used in 316i does not have DISA valve, while M43B19 used in 318i does.
Applications:
- 87 kW (118 hp) and 180 N·m (133 lb·ft)
- 1998-2001 E46 318i/318Ci
- 2001-2003 BMW E36 Z3 1.9
- 77 kW (105 hp) and 165 N·m (122 lb·ft)
- 1999-2001 E36 316i compact
- 1999-2001 E46 316i
References
- 1 2 "Engine specifications for M43 engines". www.bmwheaven.com. Retrieved 3 March 2017.
- ↑ "BMW M40 and M43 Four Cylinder Engines". www.unixnerd.demon.co.uk. Retrieved 3 March 2017.
- ↑ "What is a DISA valve?". www.bimmerforums.com. Retrieved 24 February 2017.
- ↑ "Motorenkunde über BMW Motoren". www.bmw-syndikat.de (in German). Retrieved 2 March 2017.
- ↑ "Timing and valve train-timing chain". www.bmwfans.info. Retrieved 3 March 2017.
- ↑ "Timing and valve train-tooth belt". www.bmwfans.info. Retrieved 3 March 2017.
- ↑ "BMW M43 engine". www.australiancar.reviews. Retrieved 2 March 2017.
- 1 2 3 "BMW World - 4-Cylinder Engines". www.usautoparts.net. Archived from the original on 2 March 2014.
See also
« previous — BMW automotive petrol engines: 1980s to 2000s — next » | |||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1980s | 1990s | 2000s | |||||||||||||||||||||||||||||||||||||||
| 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | ||||||||||||
| straight-4 | << M10 | M40 | M43 | N40 / N42 | N45 / N46 >> | ||||||||||||||||||||||||||||||||||||
| M42 | M44 | N43 >> | |||||||||||||||||||||||||||||||||||||||
| S14 | |||||||||||||||||||||||||||||||||||||||||
| straight-6 | << M20 | M50 | M52 | M54 | N52 >> | ||||||||||||||||||||||||||||||||||||
| << M30 | N53 >> | ||||||||||||||||||||||||||||||||||||||||
| << M88 / M90 | S38 | ||||||||||||||||||||||||||||||||||||||||
| S50 / S52 | S54 | ||||||||||||||||||||||||||||||||||||||||
| straight-6 turbo |
M102 | M106 | N54 | N55 >> | |||||||||||||||||||||||||||||||||||||
| V8 | M60 | M62 | N62 | N63 >> | |||||||||||||||||||||||||||||||||||||
| S62 | S65 >> | ||||||||||||||||||||||||||||||||||||||||
| V10 | S85 >> | ||||||||||||||||||||||||||||||||||||||||
| V12 | M70 | M73 | N73 | N74 >> | |||||||||||||||||||||||||||||||||||||
| S70 | |||||||||||||||||||||||||||||||||||||||||