|Successor||BMW M60 V8
The BMW M30 (early models are sometimes referred to as "M06") is a straight-6 SOHC piston engine which was used over a 28 year lifespan over many BMW models. Ward's have rated the M30 as one of the "Top Engines of the 20th Century".
It has been given the nicknames of 'Big Six' and 'Senior Six', following the introduction of the smaller BMW M20 straight-6 in the late 1970s.
The M30 was originally developed in the late 1960s based on the straight-4 BMW M10 engine first used in the 'Neue Klasse' BMW 1500. Several features, including a 30-degree cant to the right for a lower profile, a crossflow head design, and a chain-driven single overhead cam with rocker arm valve actuation, are common between the M10 and the M30.
|This article needs additional citations for verification. (June 2012)|
The first model to use the 2478 cc version of the M30 was the E3 2500 in 1968.
The first model to use the 2966 cc version of the M30 was the E9 3.0CS.
This was the first fuel-injected M30 version.
At 2494 cc, this is the smallest of the M30 engines. Unless otherwise noted, these engines use a carburetor.
- 1973–1976 E12 525 (107 kW)
- 1975-1979 E23 725 (110 kW)
- 1976–1981 E12 525 (110 kW)
- 1981–1987 E28 525i (110 kW, fuel injected)
A 2788 cc version of the M30, first released as the lowest specification E12 5 series. It has a bore of 86 mm, a stroke of 80 mm and a displacement of 2,788 cc (170.1 cu in). In the E24 628 CSi, it uses Bosch L-Jetronic fuel injection.
- 1975-1976 E12 528 (125 kW, carburetor)
- 1977-1979 E23 728 (125 kW, carburetor)
- 1976-1978 E12 528 (130 kW, carburetor)
- 1977-1978 E12 528i (129 kW, fuel injected, lower compression ratio, North America only)
- 1978-1981 E12 528i (135 kW, fuel injected)
- 1979-1986 E23 728i (135 kW, fuel injected)
- 1979–1987 E24 628CSi (135 kW, fuel injected)
- 1981-1987 E28 528i (135 kW, fuel injected)
This version was produced from 1975-1992. It has a bore of 89 mm, a stroke of 80 mm and a displacement of 2895 cc.
- 1975–1978 E12 530 (130 kW, injected, South Africa only)
- 1975–1978 E12 530i (131 kW, injected, North America only)
- 1976 E12 530 MLE (147 kW, injected, South Africa only)
- 1976–1979 E24 630CS (Pierburg 4A1 downdraft carburetor)
- 1977–1978 E24 630CSi (injected, North America only)
- 1977-1979 E23 730 (135 kW, carburetor)
- 1986–1992 E32 730i (138 kW)
- 1988–1990 E34 530i (not sold in North America)
Despite having a capacity of 3210 cc, this engine appeared in many cars badged 533i, 633i and 733i. It has a bore of 89 mm, a stroke of 86 mm and a capacity of 3210 cc. In the E24 633CSi, it uses Bosch L-Jetronic fuel injection. The US version used L-Jetronic from 1978 to 1982, then changed on 6/82 to Motronic fuel injection.
- 1976–1982 E24 633CSi
- 1977-1979 E23 733i (145 kW)
- 1979 E12 533i
- 1979–1986 E23 732i (144 kW)
- 1983–1984 E28 533i (North America only)
- 1984-1986 E30 333i (145 kW, South Africa only)
With catalytic converter: 8.0:1 compression ratio, 185 brake horsepower (138 kW) - mostly North America and Japan
- 1982–1987 E24 635CSi
- 1982-1987 E23 735i (160 kW)
- 1985-1988 E28 535i (136 kW, North America only)
- 1985-1987 E23 735i (136 kW, North American and Japan only)
- 1986-1987 E23 L7 (136 kW, North American and Japan only)
- 1987 E24 L6 (North America only)
- 1987-1988 E28 535is (136 kW, North America only)
Without catalytic converter: 10.0:1 compression ratio, 218 metric horsepower (160 kW) - Europe and rest of the world
- 9.0:1 compression ratio
- 211 metric horsepower (155 kW) at 5,700 rpm
- 225 lb·ft (305 N·m) torque at 4,000 rpm
- 87 AKI / 91 RON octane fuel or better recommended
- 1988–1989 E24 635CSi
- 1988–1992 E32 735i (155 kW)
- 1988–1993 E34 535i
- 1988-19?? Rayton Fissore Magnum 3.5
The M30 was the basis for the turbocharged M102 and M106 engines.
The M30 powered a series of BMW 6-cylinder E9 and BMW E24 coupes to European Touring Car Championship (ETCC) throughout the 1970s and into the middle 1980s, even though a more powerful DOHC 24-valve head had been developed for high-performance motorsports and street use.
- BMW M10, the straight-4 engine that the M30 was based on.
- BMW M20, the smaller straight-6 which was sold alongside the M30 for many years.
- Cranswick, Marc (2010). The BMW 5 series and X5 : a history of production cars and tuner specials, 1972-2008. Jefferson, N.C.: McFarland. ISBN 0786443510.
- Oswald, Werner (1. Auflage 2001). Deutsche Autos 1945-1990, Band 4. Stuttgart: Motorbuch Verlag. ISBN 3-613-02131-5.
- Büschi, Hans-Ulrich, ed. (March 9, 1989). Automobil Revue 1989 (in German/French) 84. Berne, Switzerland: Hallwag AG. p. 498. ISBN 3-444-00482-6.
|2500 version||2479 cc||110 kW (147 hp) @ 6000||211 N·m (156 lb·ft) @ 3700||9.0||1968|
|2800 version||2769 cc||125 kW (168 hp) @ 6000||234 N·m (173 lb·ft) @ 3700||9.0||1968|
|3.0CS version||2966 cc||132 kW (177 hp) @ 6000||255 N·m (188 lb·ft) @ 3700||9.0||1971|
|3.0CSi version||2966 cc||147 kW (197 hp) @ 5500||272 N·m (201 lb·ft) @ 4300||9.5||1971|
|M30B25||2494 cc||110 kW (147 hp) @ 6000||211 N·m (156 lb·ft) @ 3700||9.0||1973|
|2788 cc||125 kW (168 hp) @ 5800||233 N·m (172 lb·ft) @ 4000||9.3||1975|
|2788 cc||135 kW (181 hp) @ 5800||240 N·m (180 lb·ft) @ 4200||6500||9.3||1978|
|M30B30||2986 cc||130-140 kW||1975|
|M30B32||3210 cc||145 kW (194 hp) @ 5500||285 N·m (210 lb·ft) @ 4300||1976|
|3428 cc||136 kW @ (182 hp) 5400||290 N·m (210 lb·ft) @ 4000||6200||8.0||1985|
|3428 cc||136 kW @ (218 hp) 5800||310 N·m (230 lb·ft) @ 4200||10.0||1985|
|M30B35||3428 cc||155 kW (207 hp) @ 5700||305 N·m (225 lb·ft) @ 4000||6200||9.0||1988|
|Wikimedia Commons has media related to BMW M30 engine.|
- Bmw Engine and Powerplant Identification Codes with official BMW Document
- BMW Engines - Straight6_m
- BMW E Numbers List
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