BMW M30 engine

The BMW M30 petrol engine series, with a displacement ranging from 2.5 to 3.5 liters, was produced from 1968 to 1992 and installed in several generations of popular models in the 5, 6, or 7 Series. This powertrain also served as the basis for many racing engines produced by the company. The inline-6 lineup includes: M20, M50, M52, M54, N52, N53, N54, N55, and B58.

Technical specifications of BMW M30 series engines.

Modification: M30B25 (VE and LE versions)
Exact capacity2494 cm³
Power systemcarburetor / Jetronic
Engine power145 - 150 HP
Torque210 - 215 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter86 mm
Piston stroke.71.6 mm
Compression ratio9.0 - 9.6
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivechain
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use5.5 liters 5W-30
Fuel type92
Environmental classEURO 0/1
Approximate life expectancy300 000 HP
Modification: M30B28 (VE and LE versions)
Exact capacity2788 cm³
Power systemcarburetor / Jetronic
Engine power165 - 185 HP
Torque235 - 240 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter86 mm
Piston stroke.80 mm
Compression ratio9.0 - 9.3
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivechain
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use5.5 liters 5W-30
Fuel type92
Environmental classEURO 0/1
Approximate life expectancy320 000 HP
Modification: M30B30 (VE, LE and DME versions)
Exact capacity2986 cm³
Power systemcarburetor / Jetronic / Motronic
Engine power180 - 200 HP
Torque255 - 275 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter89 mm
Piston stroke.80 mm
Compression ratio9.0 - 9.5
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivechain
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use5.75 liters 5W-30
Fuel type92
Environmental classEURO 0/1/2
Approximate life expectancy330 000 HP
Modification: M30B32 (LE, DME and Turbo versions)
Exact capacity3210 cm³
Power systemJetronic / Motronic
Engine power197 - 252 HP
Torque280 - 380 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter89 mm
Piston stroke.86 mm
Compression ratio7.0 - 9.5
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivechain
Timing phase adjusterthere is no
Turbochargingno/yes
What oils to use5.75 liters 5W-30
Fuel type92
Environmental classEURO 1/2
Approximate life expectancy340 000 HP
Modification: M30B33 (VE version only)
Exact capacity3295 cm³
Power systemcarburetor
Engine power190 HP
Torque290 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter89 mm
Piston stroke.88 mm
Compression ratio9.0
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivechain
Timing phase adjusterthere is no
Turbochargingthere is no
What oils to use5.75 liters 5W-30
Fuel type92
Environmental classEURO 0
Approximate life expectancy300 000 HP
Modification: M30B34 (DME and Turbo versions)
Exact capacity3430 cm³
Power systemMotronic
Engine power185 - 252 HP
Torque290 - 380 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter92 mm
Piston stroke.86 mm
Compression ratio8.0 - 10
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivechain
Timing phase adjusterthere is no
Turbochargingno/yes
What oils to use5.75 liters 5W-30
Fuel type92
Environmental classEURO 2
Approximate life expectancy350 000 HP
Modification: M30B35 (LE version only)
Exact capacity3453 cm³
Power systemJetronic
Engine power218 HP
Torque310 nm
Engine blockcast iron R6
Block headaluminum 12v
Cylinder diameter93.4 mm
Piston stroke.84 mm
Compression ratio9.0
Engine featuresthere is no
Hydraulic compensator. there is no
Timing drivechain
Timing phase adjusterthere is no
Turbochargingno/yes
What oils to use5.75 liters 5W-30
Fuel type92
Environmental classEURO 1
Approximate life expectancy360 000 HP

Fuel consumption BMW M30 engine

Using the example of a 1975 BMW 528 with a manual transmission:
City14.9 litry
Route8.7 litry
Mixed12.0 litry

Engine Overview and Common Failures

The weight of the M30 engine according to the catalog is 192 kg. The engine number M30 is located at the joint of the block with the gearbox. Even after a brief overheating, the cylinder head can warp. After overhauling, the cylinder block often cracks around the thread for the cylinder head bolts. Owners often face problems with the failure of the mass air flow sensor. Valve clearances need to be adjusted every 10-20 thousand km, there are no hydraulic compensators. The mechanism for adjusting the clearances quickly becomes inoperable and requires replacement.

Engine Bmw M30

BMW
5-Series E121973 - 1981
5-Series E281981 - 1987
5-Series E341988 - 1992
6-Series E91968 - 1975
6-Series E241975 - 1989
7-Series E31968 - 1977
7-Series E231977 - 1986
7-Series E321986 - 1992

Engines from the same line as BMW M30 engine

See Also

BMW N42 engine

The BMW N42 petrol engine series with capacities of 1.8 and 2.0 liters was produced from 2001 to 2007 and exclusively installed in 3-Series models with the E46 body, including the three-door Compact. This engine was the first to feature the Valvetronic system combined with Double VANOS. The inline four-cylinder engine lineup includes: M10, M40, M43, N43, N45, N46, N13, N20, and B48.

BMW N43 Engine

The BMW N43 petrol engine series with a displacement of 1.6 and 2.0 liters was produced from 2007 to 2013 and installed in the 1-Series (E87), 3-Series (E90) and 5-Series (E60) models. This system differed from its predecessors by the presence of direct fuel injection. The four-cylinder engine lineup includes: M10, M40, M43, N42, N45, N46, N13, N20, and B48.

BMW N46 engine

The BMW N46 petrol engine series with a capacity of 1.8 and 2.0 liters was produced from 2004 to 2015 and practically installed in all compact and mid-size models of the company at that time. This power unit was upgraded in 2007, and the new version was called N46N. The R4 engine lineup includes: M10, M40, M43, N42, N43, N45, N13, N20, and B48.

BMW N13 engine

The 1.6-liter turbo petrol engine BMW N13 was produced by the company from 2011 to 2016 and was only installed in two models of the group: 1-Series (F20) and 3-Series (F30). This engine was developed in cooperation with PSA and is known there as EP6CDT. The R4 line includes: M10, M40, M43, N42, N43, N45, N46, N20, and B48.

Dodge Ezh Engine

The 5.7-liter V8 Dodge EZH or HEMI 5.7 engine has been produced at the factory in Mexico since 2008 and installed in popular company models such as Challenger, Charger, and Grand Cherokee. This engine belongs to the modernized series equipped with the Variable Cam Timing (VCT) system. The HEMI series also includes engines: EZA, EZB, ESF, and ESG.

Ford M8 engine

The 1.5-liter Ford M8MA or Kuga 2 1.5 EcoBoost engine was produced from 2014 to 2019 and only installed in the second generation of the Kuga crossover with a manual transmission. A similar power unit is found in the Galaxy and S-Max minivans, but under the designation UNCI. The 1.5 EcoBoost engine lineup also includes the following engines: M8DA, M9DA, and M9MA.