Топ-100
  • BMW M57 BMW M57

    The M57 is a water-cooled and turbocharged inline six cylinder diesel engine with common-rail-injection. It was revised twice during its production time. It ...

  • BMW M70 BMW M70

    The BMW M70 is a SOHC V12 petrol engine, which was BMWs first production V12 and was produced from 1987 to 1996. The BMW S70/2 engine, largely unrelated to t...

  • BMW M47 BMW M47

    The BMW M47 and Rover Group M47R are straight-4 Diesel engines. Variants were manufactured by BMW from 1998 to 2007. BMW gradually adopted high-pressure comm...

  • BMW M20 BMW M20

    The BMW M20 is a SOHC straight-six petrol engine which was produced from 1977 to 1993. It was introduced eight years after the larger BMW M30 straight-six en...

  • BMW M62 BMW M62

    The BMW M62 is a naturally aspirated V8 petrol engine which was produced from 1995 to 2005. A successor to the BMW M60, the M62 features an aluminium engine ...

  • BMW M43 BMW M43

    The BMW M43 is an SOHC four-cylinder petrol engine which was produced from 1991-2002. The M43 powered base-model cars, while higher performance models at the...

  • BMW M40 BMW M40

    The BMW M40 is an SOHC four-cylinder petrol engine which was produced from 1987–1994. It served as BMWs base model four-cylinder engine and was produced alon...

  • BMW M4 BMW M4

    The BMW M4 is a high-performance version of the BMW 4 Series automobile developed by BMWs motorsport division, BMW M GmbH. Part of the renumbering that split...

  • BMW M88 BMW M88

    The BMW M88 is a straight-6 DOHC petrol engine which was produced from 1978-1989. It is based on the DOHC version of the BMW M49 engine, which was used in th...

  • BMW M50 BMW M50

    The BMW M50 is a straight-6 DOHC petrol engine which was produced from 1990 to 1996. It was released in the E34 520i and 525i, to replace the M20 engine. In ...

  • BMW M5 BMW M5

    The BMW M5 is a high performance variant of the BMW 5 Series marketed under the BMW M sub-brand. It is considered an iconic vehicle in the sports sedan categ...

  • BMW M1 BMW M1

    The BMW M1 is a mid-engined sports car produced by German automotive manufacturer BMW from 1978 to 1981. In the late 1970s, Italian automobile manufacturer L...

  • BMW M60 BMW M60

    The BMW M60 is a naturally aspirated V8 petrol engine which was produced from 1992 to 1996. It was BMWs first V8 engine in over 25 years. The M60 was replace...

  • BMW M6 BMW M6

    The BMW M6 is a high-performance version of the 6 Series marketed under the BMW M sub-brand from 1983–2018. Introduced in the coupe body style, the M6 was al...

  • BMW M3 BMW M3

    The BMW M3 is a high-performance version of the BMW 3 Series, developed by BMWs in-house motorsport division, BMW M GmbH. M3 models have been produced for ev...

BMW M30

The BMW M30 is a SOHC straight-six petrol engine which was produced from 1968 to 1994. With a production run of 22 years, it is BMWs longest produced engine and was used in many car models.
The first models to use the M30 engine were the BMW 2500 and 2800 sedans. The initial M30 models were produced in displacements of 2.494–2.986 cc 152.2–182.2 cu in, with later versions having displacements of up to 3.430 cc 209.3 cu in. As per the BMW M10 four-cylinder engine from which the M30 was developed, the M30 has an iron block, an aluminium head and an overhead camshaft with two valves per cylinder.
The engine was given the nicknames of Big Six and Senior Six, following the introduction of the smaller BMW M20 straight-six engine in the late 1970s. The M30 was produced alongside the M20 throughout the M20s production, and prior to the introduction of the BMW M70 V12 engine in 1987, the M30 was BMWs most powerful and largest regular production engine.
Following the introduction of the BMW M50 engine in 1990, the M30 began to be phased out.
Wards have rated the M30 as one of the "Top Engines of the 20th Century".

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1. Design
The M30 was originally developed in the late 1960s, loosely based on the BMW M10 four-cylinder engine first used in the BMW New Class sedans and coupes. Initially, the engine code was "M06", until it was later renamed the M30.
Common features between the M10 and M30 include a profile lowering 30-degree slant to the right, a crossflow cylinder head a gas flow head in later designs and chain-driven camshaft with rocker arm valve actuation. Further similarities include a cast-iron block with an aluminium head and a forged crankshaft. The first two M30 engines introduced were the 2.788 cc 170.1 cu in and the 2.494 cc 152.2 cu in versions, which both used an 86 mm 3.39 in bore.

2.1. Versions M30B25V
The first 2.494 cc 152.2 cu in version of the M30 was introduced in the 1968 E3 2500. This version uses dual Solex Zenith 35/40 INAT carburettors, has a compression ratio of 9.0:1 and produces 110 kW 148 bhp in most applications. It has a bore of 86 mm 3.39 in and a stroke of 86 mm × 71.6 mm 3.39 in × 2.82 in.
The M30B25 has previously been called the M06 and M68, prior to BMW retroactively renaming it the M30B25V V for Vergaser - carburettor in German.
Applications:
1973–1976 E12 525 - 107 kW 143 bhp, Solex 4A1 carburettor
1968–1977 E3 2500
1976–1981 E12 525
1977–1979 E23 725
1974–1975 E9 2.5 CS

2.2. Versions M30B28V
The M30B28V version produces up to 125 kW 168 bhp and 235 N⋅m 173 lb⋅ft, depending on the model year, carburettor and country. It has a compression ratio of 9.0:1 and initially used dual Zenith 35/40 INAT carburettors. The bore is 86 mm 3.39 in and the stroke is 86 mm × 80 mm 3.39 in × 3.15 in.
This version has also been known as the M06 and M68, prior to BMW renaming it the M30B28V.
Applications:
1977-1979 E23 728 - 125 kW 168 bhp, Solex 4A1 carburettor
1971-1971 E3 Bavaria - United States only
1974-1976 E12 528 - 121 kW 162 bhp, dual Zenith INAT carburettors
1968-1971 E9 2800 CS
1968-1977 E3 2800 / 2.8L - 125 kW 168 bhp
1976-1978 E12 528 - 125 kW 168 bhp, Solex 4A1 carburettor

2.3. Versions M30B28
In 1977, Bosch L-Jetronic electronic fuel injection was added to the 2.788 cc 170.1 cu in version. Power increased to 135 kW 181 bhp and torque increased to 240 N⋅m 177 lb⋅ft.
1977-1978 E12 528i - North America only, 129 kW 173 bhp, 9.0:1 compression ratio
1979-1987 E24 628CSi
1978-1981 E12 528i
1981-1987 E28 528i
1979-1986 E23 728i

2.4. Versions M30B30V
Based on the M30B28V version with a 3 mm 0.12 in larger bore, the M30B30V produces 132 kW 177 bhp and 255 N⋅m 188 lb⋅ft, uses dual Zenith 35/40 INAT carburettors and has a compression ratio of 9.0:1.
Applications:
1971-1974 E3 3.0 S / 3.0 L / Bavaria
1971-1975 E9 3.0 CS
1971-1972 E9 3.0 CSL
1976-1979 E24 630 CS - 136 kW 182 bhp, Pierburg 4A1 carburetor
1977-1979 E23 730 - 135 kW 181 bhp, Solex 4 A 1 carburettor

2.5. Versions M30B30
The fuel injected version of the 2.986 cc 182.2 cu in M30 debuted in 1971 in the E9 3.0 CSi and initially used the Bosch D-Jetronic mechanical fuel injection system. In 1976, the fuel injection system was upgraded to Bosch L-Jetronic electronic fuel injection. The M30B30 produces up to 149 kW 200 bhp and 272 N⋅m 201 lb⋅ft, depending on the model year and whether a catalytic converter is fitted. The compression ratio is 9.5:1.
Applications:
1972-1973 E9 3.0 CSL - 149 kW 200 bhp
1976-1976 E12 530 MLE - South Africa only, 147 kW 197 bhp
1972-1975 E3 3.0 Si - 147 kW 197 bhp
1977-1978 E24 630CSi - North America only, 129 kW 173 bhp
1988-1990 E34 530i - 138 kW 185 bhp
1971-1975 E9 3.0 CSi - 149 kW 200 bhp
1986-1994 E32 730i - 138 kW 185 bhp
1975-1978 E12 530i - North America only, 131 kW 176 bhp

2.6. Versions M30B32
Despite having a capacity of 3.210 cc 195.9 cu in, this engine appeared in many cars badged so as to suggest 3.3 L 201 cu in of displacement- such as the 633i, 3.3 Li, and 733i. The compression ratio is 8.8:1. In the E24 633CSi coupe, the M30B32 uses Bosch L-Jetronic electronic fuel injection. The US version used L-Jetronic from 1978 until mid-1981, changing over to Motronic digital fuel injection in June of that year. The 1979 732i is BMWs first use of Boschs Motronic fuel injection. The bore is 89 mm 3.50 in and the stroke is 86 mm 3.39 in.
Applications:
1984-1986 E30 333i - South Africa only, 145 kW 194 bhp
1982-1984 E28 533i - North America only, 135 kW 181 bhp
1976-1979 E3 3.3 Li - 147 kW 197 bhp
1979-1981 E12 533i - North America only, 135 kW 181 bhp
1977-1984 E23 733i - 147 kW 197 bhp in Euro spec, 130–145 kW 174–194 bhp in USA spec
1973-1975 E9 3.0 CSL - 152 kW 204 bhp, 3.153 cc 192.4 cu in
1976-1984 E24 633CSi - 145–147 kW 194–197 bhp in Euro spec, 128–130 kW 172–174 bhp in USA spec
1979-1986 E23 732i - 144 kW 193 bhp

2.7. Versions M30B33V
The carburetted M30B33 produces 139 kW 186 bhp and 289 N⋅m 213 lb⋅ft. It has a bore of 89 mm 3.50 in and a stroke of 88 mm 3.46 in.
Applications:
1973-1975 E3 3.3 L

2.8. Versions M30B34
The M30B34 engines sold in Europe and most other markets used a 10.0:1 compression ratio and produced 160 kW 215 bhp. In North America and Japan, the M30B34 used an 8.0:1 compression ratio and produced 136 kW 182 bhp. In all markets, the Bosch Motronic digital fuel injection system was used. The bore is 92 mm 3.62 in and the stroke is 86 mm 3.39 in.
Applications:
1985-1988 E28 535i / 535is / M535i
1982-1987 E23 735i / L7
1982-1987 E24 635CSi / L6 - 163 kW 219 bhp in Euro spec

2.9. Versions M30B35
This engine has a capacity of 3.430 cc 209.3 cu in, despite the "B35" model code. It produces 155 kW 208 bhp and 305 N⋅m 225 lb⋅ft, has a compression ratio of 9.0:1 and uses Bosch Motronic 1.3 digital fuel injection.
Applications:
1986-1992 E32 735i
1988-1989 Rayton Fissore Magnum 3.5
1988-1989 E24 635CSi
1987-1992 E34 535i

3. Turbocharging
The M30 was the basis for the turbocharged M102 and M106 engines.
The Alpina B10 Biturbo used a modified version of the M30, with two turbochargers and forged pistons. Producing 265 kW 355 bhp at 6000 rpm and 520 N⋅m 384 lb⋅ft at 4000 rpm, the engine made this car the fastest sedan in the world. The final 50 M30 blocks were shipped to Alpina for use in the final 50 B10 Biturbos.

3.1. Turbocharging M102
The M102 was produced from 1980 to 1982. It was BMWs first turbocharged six-cylinder engine.
The M102 also known as M30B32LAE has a displacement of 3.210 cc 195.9 cu in. The KKK K27 turbocharger produces 9 psi 0.62 bar of boost and an air-to-air intercooler is used. The compression ratio is 7.0:1.
The M102 produces 188 kW 252 bhp and was used in the E23 7 Series, in the model was designated "745i". The M102 was not available in right-hand drive cars, leading to the South African 745i using the BMW M88 naturally aspirated DOHC straight-six engine instead.
Applications:
1980–1982 E23 745i

3.2. Turbocharging M106
The M106 also called M30B34MAE replaced the M102 and was produced from 1982 to 1986.
Some of the M106s upgrades over its predecessor are a result of the M30B34 version of the M30, which was also released in 1982. These upgrades include Bosch Motronic engine management and an increased displacement to 3.430 cc 209.3 cu in. The compression ratio was increased from 7.0:1 to 8.0:1.
Peak power output is the same 185 kW 248 bhp as the M102, however it occurs at lower RPM and peak boost is reduced from 9 to 6 psi 0.62 to 0.41 bar.
There was no direct successor to the M106, however BMWs next turbocharged engine was the BMW N54, introduced in 2006.
Applications:
1982-1986 E23 745i

4. Motorsport
The M30 powered a series of E9 CSL and E24 6 Series 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.
The BMW M88 high-performance engine is based on the M30 block.

BMW M3

The BMW M3 is a high-performance version of the BMW 3 Series, developed by BMWs in-house motorsport division, BMW M GmbH. M3 models have been produced for ev...

BMW M6

The BMW M6 is a high-performance version of the 6 Series marketed under the BMW M sub-brand from 1983–2018. Introduced in the coupe body style, the M6 was al...

BMW M60

The BMW M60 is a naturally aspirated V8 petrol engine which was produced from 1992 to 1996. It was BMWs first V8 engine in over 25 years. The M60 was replace...

BMW M1

The BMW M1 is a mid-engined sports car produced by German automotive manufacturer BMW from 1978 to 1981. In the late 1970s, Italian automobile manufacturer L...

BMW M5

The BMW M5 is a high performance variant of the BMW 5 Series marketed under the BMW M sub-brand. It is considered an iconic vehicle in the sports sedan categ...

BMW M50

The BMW M50 is a straight-6 DOHC petrol engine which was produced from 1990 to 1996. It was released in the E34 520i and 525i, to replace the M20 engine. In ...

BMW M88

The BMW M88 is a straight-6 DOHC petrol engine which was produced from 1978-1989. It is based on the DOHC version of the BMW M49 engine, which was used in th...

BMW M4

The BMW M4 is a high-performance version of the BMW 4 Series automobile developed by BMWs motorsport division, BMW M GmbH. Part of the renumbering that split...

BMW M40

The BMW M40 is an SOHC four-cylinder petrol engine which was produced from 1987–1994. It served as BMWs base model four-cylinder engine and was produced alon...

BMW M43

The BMW M43 is an SOHC four-cylinder petrol engine which was produced from 1991-2002. The M43 powered base-model cars, while higher performance models at the...

BMW M62

The BMW M62 is a naturally aspirated V8 petrol engine which was produced from 1995 to 2005. A successor to the BMW M60, the M62 features an aluminium engine ...

BMW M20

The BMW M20 is a SOHC straight-six petrol engine which was produced from 1977 to 1993. It was introduced eight years after the larger BMW M30 straight-six en...

BMW M47

The BMW M47 and Rover Group M47R are straight-4 Diesel engines. Variants were manufactured by BMW from 1998 to 2007. BMW gradually adopted high-pressure comm...

BMW M70

The BMW M70 is a SOHC V12 petrol engine, which was BMWs first production V12 and was produced from 1987 to 1996. The BMW S70/2 engine, largely unrelated to t...

BMW M57

The M57 is a water-cooled and turbocharged inline six cylinder diesel engine with common-rail-injection. It was revised twice during its production time. It ...