BMW M43
Template:Infobox automobile engine
The BMW M43 is an SOHC four-cylinder petrol engine which was produced from 1991 to 2002.[1] The M43 powered base-model cars, while higher performance models at the time were powered by the BMW M42 and BMW M44 DOHC engines. The M43 was produced at the Steyr engine plant.[2]
A version using natural gas was produced for the E36 318i and the E34 518i.
Following the introduction of the BMW N42 engine in 2001, the M43 began to be phased out.
Design
Compared with its BMW M40 predecessor, the M43 features both a camshaft position sensor and a knock sensor[3] as well as roller rockers and a timing chain (instead of the M40's finger rockers and timing belt).[4][5] It also features a dual length intake manifold[6] ("DISA"), to provide torque across a wider rev range.[7]
In 1998 the displacement was increased to Script error: No such module "convert"., increasing torque to Script error: No such module "convert". at 3900 rpm.[1]
Versions
| Version | Displacement | Power | Torque | Year | Note |
|---|---|---|---|---|---|
| M43B16 | Script error: No such module "convert". | Script error: No such module "convert". at 5500 rpm |
Script error: No such module "convert". at 3900 rpm |
1991-1999 | |
| Script error: No such module "convert". at 5500 rpm |
Script error: No such module "convert". at 3900 rpm |
1995-2000 | CNG | ||
| M43B18 | Script error: No such module "convert". | Script error: No such module "convert". at 5500 rpm |
Script error: No such module "convert". at 3900 rpm |
1993 | |
| Script error: No such module "convert". at 5500 rpm |
Script error: No such module "convert". at 3900 rpm |
1995-1996 | CNG | ||
| M43B19 | Script error: No such module "convert". | Script error: No such module "convert". at 5500 rpm |
Script error: No such module "convert". at 3900 rpm |
1998 | |
| Script error: No such module "convert". at 5300 rpm |
Script error: No such module "convert". at 2500 rpm |
1999 |
M43B16
The Script error: No such module "convert". M43B16 produces Script error: No such module "convert". and Script error: No such module "convert". of torque. It uses the Bosch Motronic 1.7.x and Bosch BMS43 engine management system.[8] There was also a natural gas-powered version of this car (also able to run on petrol) for the 1995 BMW 316g Compact.
Applications:
Engine Management Systems:
- 1993-09/1995 Bosch Motronic 1.7.2
- 1995-09/1997 Bosch Motronic 1.7.3
- 1997-2000 BMS43
M43B18
The M43B18 has a Script error: No such module "convert". displacement. It produces Script error: No such module "convert". and Script error: No such module "convert". and uses the Bosch Motronic 1.7.1 fuel injection system.[8] There was also a less powerful natural gas-powered version of this car (also able to run on petrol) for the BMW 518g Touring (E34). This model was only available for two years.
Applications:
M43B19
The M43B19 (also known as the "M43TÜ") is the largest M43 engine, with a displacement of Script error: No such module "convert".. It produces up to Script error: No such module "convert". and Script error: No such module "convert"., and uses BMW's BMS 46 engine management system.[8] The Script error: No such module "convert". versions do not have the DISA intake manifold and also have a smaller camshaft compared to the 118 PS versions. Note the M43B16, M43B18 and the M43B19 (118 PS version) all have the same camshaft.
Applications— Script error: No such module "convert". and Script error: No such module "convert".:
Applications— Script error: No such module "convert". and Script error: No such module "convert".:
References
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