BMW M43

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BMW M43B16 in a 316i Compact (E36)
BMW M43B18

The BMW M43 is a four-cylinder - petrol engine of the car manufacturer BMW and successor of the BMW M40 . The crankcase (engine block) was taken over unchanged. Compared to the predecessor engine, the toothed belt drive on the M43 has been replaced by a maintenance-free timing chain, friction in the valve train has been reduced by means of roller cam followers, the failure-prone ignition distributor has been replaced by an ignition system with static high-voltage distribution, the crankshaft has been lightened and compression slightly increased. The auxiliary unit drive, the crankcase ventilation, the thermostat housing and the intake system have also been revised. The latter was now more aerodynamically designed and designed as a differentiated intake system (DISA).

The BMW M43 was used in the BMW E36 316i and 318i from 1994 .

In addition, there were two petrol and natural gas variants which had a “g” instead of an “i” in the model name. The bivalent petrol-natural gas drive was offered in the E36 series as a 316g compact (two-seater) and in the E34 series as a 518g touring . Due to its torque curve, the M43 is particularly suitable for bivalent drives.

For the market launch of the E46 , the M43 was technically revised and used from then on as the M43TÜ until it was replaced in 2001 by its two successors, the N40 and N42 .

Data

Engine type Displacement Bore × stroke Valves / cyl. compression Power at 1 / min Torque at 1 / min construction time
M43B16 1.6 l (1596 cm 3 ) 84 mm × 72 mm 2 9.7: 1 75 kW (102 PS) at 5500 150 Nm at 3900 1993-1999
64 kW (87 PS) at 5500 A. 127 Nm at 3900 A. 1995-2000
M43B18 1.8 l (1796 cm 3 ) 84 mm × 81 mm 2 9.7: 1 85 kW (115 PS) at 5500 168 Nm at 3900 1993-1999
74 kW (100 PS) at 5500 A. 142 Nm at 3900 A. 1995-1996
M43TUB19 UL 1.9 l (1895 cm 3 ) 85 mm × 83.5 mm 2 9.7: 1 77 kW (105 PS) at 5300 165 Nm at 2500 1998-2002
M43TUB19 OL 87 kW (118 hp) at 5500 180 Nm at 3900 1998-2001
A. Values ​​apply to natural gas operation (GUS quality)

use

M43B16
  • 1.6 l (1596 cm³), 64 kW (87 PS), 127 Nm
  • 1.6 l (1596 cm³), 75 kW (102 PS), 150 Nm
M43B18
  • 1.8 l (1796 cm³), 85 kW (115 PS), 168 Nm
M43TUB19 UL
  • 1.9 l (1895 cm³), 77 kW (105 PS), 165 Nm
M43TUB19 OL
  • 1.9 l (1895 cm³), 87 kW (118 hp), 180 Nm
    • 1998-2001 BMW E46 318i / Ci
    • 1998-2002 Z3 1.9i

literature

  • Karlheinz Lange: History of the engine - engine of history (BMW dimensions 1 + 2) . Ed .: BMW Mobile Tradition. 1st edition. tape 2 (1945-2000) , 1999, ISBN 3-932169-04-2 , Chapter 12: In-line engines from 1971, p. 275-279 .

Individual evidence

  1. ↑ Page of the BMW spare parts catalog for the crankcase of the M40 / M42 / M43 , accessed on February 19, 2018.
  2. ^ A b Greg Hudock: BMW 3 Series - E36 Restoration Tips & Techniques . Brooklands Books, 2012, ISBN 978-1-85520-970-1 , pp. 8-2 ( limited preview in Google Book search). Retrieved February 19, 2018.
  3. ^ Karlheinz Lange: History of the engine - engine of history (BMW dimensions 1 + 2) . Ed .: BMW Mobile Tradition. 1st edition. tape 2 (1945-2000) , 1999, ISBN 3-932169-04-2 , Chapter 12: In-line engines from 1971, p. 278 .
  4. ↑ a b BMW AG (ed.): The BMW automobiles with bivalent gasoline-natural gas drive . February 1995 ( bmw-grouparchiv.de [accessed on March 1, 2017] vehicle brochure, archive signature AK-1229-10).
  5. ↑ http://www.bmw-syndikat.de/bmw-syndikat/archiv/bmw_motorenkunde
Timeline of BMW gasoline engines for passenger cars since 1961
Number of cylinders Conception 1960s 1970s 1980s 1990s 2000s 2010s
0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th
3 1.5 l B38
4th (1.5–2.0 l) M10
M40
M42
M43
M44
N40
N42
N45
N46
N43
N13
N20
B48
High performance motor S14
6th Small six-cylinder (2.0-3.0 l) M20
M50
M52
M54
Large six-cylinder (2.5-3.5 l) M30
N52
N53
N54
N55
B58
High performance motor M88
S38
S50
S52
S54
S55
8th 3.0-4.4 l M60
M62
N62
N63
High performance motor S62
S63
S65
10 High performance motor S85
12 5.0-6.6 l M70
M73
N73
N74
High performance motor S70
Number of cylinders Conception 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th 9 0 1 2 3 4th 5 6th 7th 8th
1960s 1970s 1980s 1990s 2000s 2010s