BMW engines: characteristics of models, description of BMW engines, photos. BMW engines marking description review photo video BMW engine depending on

BMW X5 with gasoline and diesel engines with supercharging are currently being sold in Russia. Today we'll talk about the technical characteristics of these motors. The X5 petrol engines have 3 and 4.4 liters displacement, an in-line 6-cylinder unit and a more powerful V8. Diesel engines BMW X5 have the same volume of 3 liters, but all units have different power.

There are three diesel versions with supercharged, double and even triple supercharging. It is the triple supercharged diesel that is the main technical novelty X5 third generation. All cylinder blocks power units made of aluminum-magnesium alloy. The timing chain traditionally uses a chain. The petrol N55B30 with a working volume of 3 liters has one turbine, the performance of which determines the final power of the power unit. The variable valve timing system is two camshafts (Bi-VANOS). There is a system for changing the valve lift Valvetronic III and direct fuel injection with a turbocharger. The twin-scroll Borg Warner B03 is responsible for boosting. The more powerful BMW X5 engine (engine model N63B44) with a volume of 4.4 liters in the V8 configuration has a double boost. Further specifications gasoline engines BMW X5.

BMW X5 engine 3.0 gasoline (306 hp) characteristics, fuel consumption

Working volume - 2979 cm3
Number of cylinders - 6
Number of valves - 24
Power hp (kW) - 306 (225) at 5800-6400 rpm
Torque - 400 Nm at 1200-5000 rpm
Maximum speed - 235 km / h
Acceleration to 100 km / h - 6.5 seconds
Fuel consumption in the city - 11.2 liters
Fuel consumption in mixed cycle - 8.5 liters
Fuel consumption on the highway - 6.9 liters

BMW X5 engine 4.4 petrol (450 hp) characteristics, fuel consumption

Working volume - 4395 cm3
Number of cylinders - 8
Number of valves - 32
Power hp (kW) - 450 (330) at 5500-6000 rpm
Torque - 650 Nm at 2000-4500 rpm
Timing Type / Timing Drive - DOHC / Chain
Acceleration to 100 km / h - 5 seconds
Fuel consumption in the city - 14 liters
Combined fuel consumption - 10.4 liters
Fuel consumption on the highway - 8.3 liters

Diesel power units BMW X5These are the N57D30 turbodiesel, the N57D30 biturbo diesel and the unique N57S triturbo diesel have a single displacement of 2993 cm3. These are inline 6-cylinder units with a capacity of 249, 313 and 381 horsepower. Structurally, they are similar, the only difference is in the pressurization device. Further, the characteristics of these power units.

BMW X5 3.0 diesel engine (249 hp) characteristics, fuel consumption

Working volume - 2993 cm3
Number of cylinders - 6
Number of valves - 24
Power hp (kW) - 249 (183) at 4000 rpm
Torque - 560 Nm at 1500-3000 rpm
Timing Type / Timing Drive - DOHC / Chain
Maximum speed - 230 km / h
Acceleration to 100 km / h - 6.8 seconds
Fuel consumption in the city - 7 liters
Fuel consumption on the highway - 5.7 liters

BMW X5 3.0 diesel engine (313 hp) characteristics, fuel consumption

Working volume - 2993 cm3
Number of cylinders - 6
Number of valves - 24
Power hp (kW) - 313 (230) at 4400 rpm
Torque - 630 Nm at 1500-2500 rpm
Timing Type / Timing Drive - DOHC / Chain
Maximum speed - 236 km / h
Acceleration to 100 km / h - 5.9 seconds
Fuel consumption in the city - 7.1 liters
Combined fuel consumption - 6.2 liters
Fuel consumption on the highway - 5.8 liters

BMW X5 3.0 diesel engine (381 hp) characteristics, fuel consumption

Working volume - 2993 cm3
Number of cylinders - 6
Number of valves - 24
Power hp (kW) - 381 (280) at 4000-4400 rpm
Torque - 740 Nm at 2000-3000 rpm
Timing Type / Timing Drive - DOHC / Chain
Maximum speed - 250 km / h
Acceleration to 100 km / h - 5.3 seconds
Fuel consumption in the city - 7.6 liters
Combined fuel consumption - 6.7 liters
Fuel consumption on the highway - 6.2 liters

Diesel engines X of the fifth today are not inferior in their dynamic characteristics gasoline units, but at the same time they have a much higher torque. And most importantly, fuel consumption diesel versions The BMW X5 is substantially smaller. In reality, the difference in fuel consumption can be up to two times.

This overview presents BMW gasoline and diesel engines that have been in use over the past 15 years. Due to the huge range of power units of the Bavarian company, we cannot cover all engines and their variants. Nevertheless, let's dwell on the most famous and popular motors.

BMW is one of the world's leading manufacturers offering the most modern and advanced powertrains on the market. Therefore, you need to be prepared for high maintenance and repair bills. You don't have to look far for examples - for many owners it comes as a surprise that the timing chain drive used in all modern BMW engines needs to be periodically replaced. The chain and tensioner, as a rule, maintain about 200-300 thousand km. This generates noise and the engine runs unevenly. To replace the timing chain, you need to prepare about 20-30 thousand rubles. In the case of old copies, difficulties arise when trying to conduct overhaul - the materials used for the manufacture of cylinder liners do not allow for their restoration.

The costs of buying a used BMW depend on the condition of the vehicle and the version of the engine under the hood. Our review will certainly help to make right choice.

Engine marking

German concern BMW has been one of the leaders in production for many years automotive engineering, parts and assemblies. BMW engines are no exception. The line of power units of this company is quite large. The letters are used to identify a specific series of motors:

M - for standard serial motors;
S - for Motorsport sports engines;
N - for modern engines new generation;
P - for prototypes.

It is worth noting that the BMW engines used in the second generation X5 model are classified N, which indicates the use of innovations and latest developments. Modern models X5 are equipped with several types of gasoline and diesel engines supercharged.

Engine M21 2.5 liters (diesel) 82-91. (E28, E30)

The M21, a 6-cylinder diesel engine, was the first diesel in BMW's history. Production began in 1982 to fit the 524td in the newly introduced E28 body. The M21 was equipped with a turbocharger, which allowed the diesel version to maintain the dynamic image inherent in all BMW models. With the release of the new E30 3 Series bodywork, the M21 has another application, the 324td.

In 1985, an attempt was made to release an economical version without turbocharging. But the leisurely 524d and 324d did not appeal to buyers. The very next year, the production of naturally aspirated diesel engines was discontinued and never resumed.

M30 engine of 2.5, 2.8, 3.0, 3.2, 3.5 liters

Concern BMW lured Bernard Oswald from ford to develop the second generation of six-cylinder engines in the mid-sixties. The first were six-cylinder engines with seven crankshaft bearings. They were used in the new sedans of the E3 series in 1968. The successful M10 formula was again applied - a cast iron block, an aluminum head with a camshaft chain drive. After 1972, the development took place under the control of Gustav Ederer and it was then that the first model with 4 valves appeared - the M88

M30 engine - big 6 cylinder engine with an in-line arrangement of cylinders, which has modifications of 2.5, 2.8, 3.0, 3.2 and 3.5 liters of working volume. It can be found on the 5 Series (E12, E28 and E34), 6 Series (E24) and 7 Series (E23 and E32), as well as the famous BMW M1.

The engine turned out to be very successful, both in design and in survivability. Of course, the engine's survivability was partly provided by its high power. Due to the fact that more powerful engines and load less.

Only the modification of the M30B35 with a cylinder diameter of 93.4 mm was unsuccessful - it turned out to be too energy-loaded. But do not confuse it with the M30B34, which was installed on almost all 3.5 liter cars.

The M30 is an engine for a quiet ride, it has too heavy piston and too large piston strokes, which do not allow it to spin up quickly and create heavy loads on the bearings (liners).

Also, due to the high mass of the piston system, the engine is very picky about oil if fed mineral oil and at the same time constantly keep it in the range of revolutions of 4-6 thousand, after a few thousand you will have to grind the crankshaft. This engine should only be filled with synthetic oil and if you like to twist it, then on volumes of more than 2.8 liters - installation of an oil cooler is required.

On the other hand, the advantages of in-line six balance and high power for low revs more than compensate for these shortcomings.

Also M30 - was the second and last engine on which turbocharging was serially installed - turbocharged modifications of the M30 were used only in the 745i models in the E23 body. In fact, their volume was 3.2 and 3.4 liters, depending on the modification. But both variants were marked M102. The power is the same - 252 hp. The main difference is the ignition and power system.

The engine was installed on cars of the third, fifth, sixth and seventh series.

3rd series:

E30 - 333i - 3.2. liters, with the Motronic injection system. Supplied only to the UAE.

5th series:

E12 - 525 - 2.5 liters with carburetor, 528 - 2.8 liters. with carburetor and injector, 535i - 3.5 liters, with injector only.
E28 - models 525i, 528i, and since 1985 535i and M535i. Starting with the E28 body, only injection modifications were installed.
E34 - 530i - 3L, 535i - 3.5L Also, only an injector with a Motronic injection system and a crankshaft position sensor located on the crankshaft damper, and not on the gearbox.

6th series:

E24 - 628CS with carburetor and injection (628CSi), 633CSi, 635CSi - injector only.

7th series:

E23 - 728 injector / carburetor, 730 carburetor, 732i / 733i, 735i, 745i - turbocharged version of the engine was installed on the 745i.
E32 - 730i, 735i - 3.0 and 3.5 liters, respectively.

BMW M47 - in-line 4-cylinder diesel engine

First released in 1998, the M47D20 boasted 100 kW (136 hp) of power and 280 Nm (207 ft-lb) of torque in the 320d / 520d variant, and 85 kW (114 hp) with 265 Nm (195 ft-lb) of torque. ) performed by 318d. All M47 engines have one valve and one vortex injector per cylinder, each of which can improve performance in a variety of conditions. The M47diesel was fitted with an indirect fuel injection with an engine displacement of 1951 cc.

Initially, thermostats were installed on all BMW engines of that time, which, when worn out, caused additional engine cooling, which deteriorated the engine's fuel consumption characteristics. Later the BMW plant changed fuel system single row engine high pressure.

The turbocharged BMW M47 diesel engine uses a Garrett variable geometry turbocharger (VGT), also known as a variable vane turbocharger. These early VGTs used until September 2003 vacuum system to control the drive, which in turn controls the movement of the blade. Over time, the drive vacuum tubes are prone to deterioration, which can affect the operation of the entire turbocharger. Later turbochargers (after September 2003) are electronically powered and failure can result in costly replacement of both the compressor and the entire drive. Fortunately, in some cases, the actuator can be repaired separately without replacing the turbocharger.

To help keep the turbocharger and engine in top condition, regular replacement of synthetic oil and filters after 7,000-8,000 km is a must. Regular checks are also required plastic parts oil separator or replace them every 12-18 months in order to avoid clogging and increase in internal pressure.

If your turbocharger has failed on this engine, and the scan cannot reveal specific error codes, then you can check all the vacuum tube connections and the condition of the vacuum reservoir itself. To do this, simply disconnect the vacuum hose.

The whistle of the engine turbine is another unpleasant symptom inherent in this engine. Some turbos whistle more than others and this may simply be a characteristic of general engine wear. If the sound resembles a police siren, then we advise you to check the clearance on the turbine shaft as soon as possible.

To access the compressor shaft while the engine is cool, remove the air duct and pinch the shaft between your thumb and forefinger. This will check how much the bearings are floating, both side to side (radial clearance) and axially (axial play). The axial clearance is usually between 0.025–0.1 mm and can hardly be felt, the radial displacement is usually between 0.3–0.6 mm. For more accurate measurements, a dial gauge is required. But if the "floating" movement seems excessive, then most likely immediate repair is required.

Unusual high consumption oil combined with blue smoke from the flue pipe can be a symptom of worn seals. On very rare occasions, the engine may run on its own oil, causing plumes of smoke. If this happens, turning off the ignition may be meaningless as it burns motor oilwhich can lead to engine seizure. Try to use the clutch to brake the car with your feet on the brake.

The M47 motor for its time was the best in technical characteristics in its class. At the same time, it has a number of features that entail an increase in service costs. However, compared to its N47 successor, it is a less problematic and generally more successful engine. It can be argued that this is a very successful motor, although it is not necessary to rely on a low operating cost.

BMW engine: diesel unit

The small letter D in the name of the BMW model means significantly great results... Every BMW diesel engine, whether four, six or eight cylinders, guarantees refined power and superior fuel efficiency. Improved turbochargers, revised turbine geometry and system direct injection allowed a new look at the diesel engine.

The price for such innovations: 306 liters. from. power at a flow rate of no more than 7.5 liters per 100 km. At the same time, acceleration to hundreds is only 6.6 seconds. Regardless of which engine is installed in the BMW X5, there is one thing you can always be sure of - maximum driving comfort combined with maximum performance.

TOP 5 BEST BMW MOTORS

TOP 5 WORST BMW MOTORS

We present an overview of how the technical characteristics of the 525 model 525 cars changed. bMW series for three generations.

Technical characteristics of BMW 525 E34

At the end of the eighties, BMW enterprises began to produce cars in the new E34 body. Compared to the previous body, the E34 is more streamlined and stiffer. The sporty appearance of the car has logically increased the demands on its dynamics. If the 1.8-liter engines were economical, then the three-liter engines were suitable for sports fans. The 525 models were the right choice for those who preferred “ the golden mean”. The 525 was the most successful of the e34 series.

At first, the new BMW fives left the workshops of the plant on a 2.5 - liter M20V25 engine, which was installed on the previous bodies and developed a capacity of 170 horsepower. This was clearly not enough to meet customer expectations. Therefore, by May 1990, the E34 525i model was re-equipped with a more powerful M50 engine, which, having four valves per cylinder, already absorbed 192 “horses”.

The increase in power required engineers to adjust other technical characteristics of the car. So, to ensure effective braking on the 525i, ventilated brake discs on the front wheels.

Owners of "fives" were able to feel more fully the advantages of the 2.5-liter engine thanks to the release of the all-wheel drive version of the 525 ix car. The car confidently pushed off the asphalt with all four wheels, regardless of whether it was driving on a plain or climbing up a mountain serpentine. By the way, for fans of family trips, the BMW concern began to produce Touring 525i station wagons.

Parallel to gasoline engine, diesel engines were also installed on the 525th model. The first modification received the designation BMW 525tds e34. The power of the car was 143 hp, which allowed it to accelerate to 200 km / h. And those who like to save money chose a diesel engine of 115 "horses".

The 525's engine was combined with five-speed manual and automatic transmissions.

Combination different engines, transmissions, body variations and drive systems made it possible to produce more than a dozen modifications of the 525 e34 model, and each of them found its own buyer.

The coding system for BMW models is very informative. The first number "5" indicates that we are talking about a business class car. Code "25" indicates an approximate engine capacity of 2500 "cubes". Latin letters "i" and "d" denote injection gasoline or diesel engine, respectively. The word "Touring" in BMW is traditionally called family station wagons, and the definition "Automatic" logically indicates automatic transmission gear.

Technical characteristics of the BMW 525 series e34

Model	Year of issue		Power, h.p.	Torque, Nm	Maximum speed, km / h
525i Automatic e34	1988	2.5/2494	171	221	204
525i e34	1988	2.5/2494	171	221	222
525i 24v e34	1990	2.5/2494	192	250	231
525tds Touring Automatic e34	1991	2.5/2498	143	261	201
525tds Touring e34	1991	2.5/2498	143	261	199
525tds Automatic e34	1991	2.5/2498	143	261	205
525tds e34	1991	2.5/2498	143	261	206
525ix 24v Touring e34	1991	2.5/2494	192	246	217
525ix 24v e34	1991	2.5/2494	192	246	220
525i 24v Touring Automatic e34	1991	2.5/2494	192	250	219
525i 24v Touring e34	1991	2.5/2494	192	246	223
525i 24v Automatic e34	1991	2.5/2494	192	246	228
525 td Touring Automatic e34	1993	2.5/2498	115	221	182
525td e34	1993	2.5/2498	115	221	195
525td Automatic e34	1993	2.5/2498	115	221	190
525td Touring e34	1993	2.5/2498	115	221	189

Change of generations: technical characteristics of the BMW 525 E39

The new BMW 525i E39 replaced the 34 in 2000. The BMW 525i E39 was equipped with an M54B25 engine, which had a 2.5-liter volume and a capacity of 192 horse power... The engine was characterized by smooth operation and a love of high speed... Engineers equipped the engine with the advanced VANOS timing system.

Despite the fact that the engine power remained the same as that of previous generation, the car turned out to be more economical. The top speed of almost all models has also increased. This became possible thanks not only to new system injection, but also the large-scale use of aluminum in chassis structures.

Technical characteristics of the BMW 525 series e39

Model	Year of issue	Engine displacement, l / cc	Power, h.p.	Torque? Nm.	Maximum speed, km / h
525tds Automatic e39	1996	2.5/2497	143	280	205
525tds e39	1996	2.5/2497	143	280	211
525i Touring Automatic e39	2002	2.5/2494	192	246	229
525i Touring e39	2002	2.5/2494	192	246	235
525d e39	2002	2.5/2497	163	351	218
525i Automatic e39	2002	2.5/2494	192	246	232
525i e39	2002	2.5/2494	192	246	238
525d Touring Automatic e39	2002	2.5/2497	163	351	216
525d Touring e39	2002	2.5/2497	163	351	216
525d Automatic e39	2002	2.5/2497	163	351	218

Serial sports car: characteristics of the BMW 525 E60

Model 525 received a new e60 body in 2003. In a few years of BMW set up production of cars with different kinds body, drive, engines and transmission. At first on new car the same 2.5-liter 192-horsepower M54B25 engine was installed. However, the change of generations again required an increase in power. Therefore, since 2005, a new 6-cylinder 218-horsepower N52B25OL engine has been installed on the rear-wheel drive BMW 525i E60 and the all-wheel drive version of the BMW 525xi E60.

In 2007, the 525 models, retaining their numerical index, received three-liter engines. This applied to both gasoline and diesel engines. However, their power, like maximum speed cars have not increased.

Technical characteristics of the BMW 525 series e60

Model	Year of issue	Engine displacement, l. / cubic cm.	Power, h.p.	Torque, Nm.	Maximum speed, km / h
525i Automatic e60	2003	2.5/2494	192	246	234
525i e60	2003	2.5/2494	192	246	238
525d e60	2004	2.5/2497	177	400	231
525d Automatic e60	2004	2.5/2497	177	400	228
525xi e60	2005	2.5/2497	218	250	236
525i Automatic e60	2005	2.5/2497	218	250	243
525i e60	2005	2.5/2497	218	250
525xi Automatic e60	2005	2.5/2497	218	250	232
525Li e60	2006	2.5/2497	218	250	243
525xi Automatic e60	2007	3/2996	218	269	233
525xi e60	2007	3/2996	218	269	239
525i Automatic e60	2007	3/2996	218	269	245
525d e60	2007	3/2993	197	400	236
525d Automatic e60	2007	3/2993	197	400	235
525i e60	2007	3/2996	160	269	249

In general, the "525" model went and continues to move along the path characteristic of the business class of prestigious car brands: engine power is increased by changing the injection system and the associated increase in volume. At the same time, designers are following the path of reducing weight and improving the aerodynamics of the car. Therefore, from year to year, cars are armed with more and more power reserves and over and over again beat speed records.

Volume 1.5, 1.8, 2.0 liters
M10 - 4-cylinder 8-valve small displacement engine. He, apparently, should be recognized as a long-liver record holder in the series bMW engines... An incredibly successful design was developed for the 114 body back in the early 60s. The Russian motorist can easily familiarize himself with the "original" version of the M10 by looking under the hood of a Moskvich-412 or 2140 (it was the M10 that AZLK copied when developing its "own" engine). Such longevity, on the one hand, speaks of a wonderful design, on the other hand, it makes it clear that on later BMW models, this engine looks too outdated.

Before this engine appeared in the "new class" 1500 sedans, BMW's post-war engines featured a pre-war redesigned 2 liter inline-six, a great but very expensive aluminum V8, and several tailored motorcycle engines. The history of the M10 engine dates back to 1958, when engineer Alex Falkenhausen proposed a 1 liter four-cylinder engine for the 700 model. The engine never made it to production, but its basic design concepts found application in a "new class" engine. It was a design with a cast iron cylinder block, an aluminum head and a chain drive of one camshaft. It was created with a margin, which later allowed to bring the working volume up to 2 liters and gave many variations of this motor for almost a quarter of a century. A turbine was also installed on the 2 liter version in 1973 - these engines were used in the 2002 turbo models.

In the "new" history, the M10 was installed on the E12 (models 518, 520i), E21 (315, 316, 318, 318i, 320i), E28 (518) and E30 (315, 316, 318i).

Volume	Cylinder diameter / piston stroke	Start	Used in models
			1500
			1600, 1600Т1, 1600-2, 1602 1502,1600GT E21 316, 315
			1800, 1800Т1, 1800TI / SA
			1800, 1802 E21 316, 318, 318i E28 518, 518i E30 316, 318i
			2000, 2002, 2002ti, 2002tii 2000C 2000CS E21 320, 320I, E12 520i

S14 engines (1986 - 1991)

Based on the M10 block, the S14 was developed by BMW Motorsport for the E30 M3.

Volume: 2302 (2467)
Bore: 93.4 (95)
Piston stroke: 84 (87)
Introduced 1986 / (1989)

* The box contains data for M3 Sport Evolution

M20 engine of 2.0, 2.3, 2.5, 2.7 liters

The M20 is a 6-cylinder, 12-valve engine of a relatively small (for BMW) displacement and a belt-driven camshaft - was developed and began to be produced by BMW back in 1977 under the designation M60.

Basically, the engine was intended for the new and first 5-series car that appeared in 77, the E12. To create modern, economical and inexpensive versions of cars. In addition, a more powerful engine was also required for the 3-series cars; under the hood of BMW three-ruble cars there was simply not enough space for the M30 (M89) engines.

The new engine differed from its older brother, the M30, in a lighter design and a belt-driven camshaft. Nevertheless, the engine retained a cast iron cylinder block with an aluminum head. An important innovation for the M60 was the introduction of a camshaft belt drive instead of the previously used chain.

In the 82nd year, the M60 engine was slightly modernized and it received the M20 marking. The M20 was also called the previous editions, and the name M60 was given to a completely different engine in 93. The differences between the M20 and M60 were very small.

There is no fuel pump on the M20 in cylinder block, and also changed the number of teeth on the timing belt - M60 - 111, M20 - 128, and since 1985 - 127. Accordingly, the timing gears have changed, as well as the belt tensioner pulley.

Further development of the M20 brought a 2.5 liter 170 strong version and a high-torque derated 2.7 liter modification.

A feature of the 2.7-liter M20B27 engine was that the engine was heavily deformed. It produced only 125 hp. at 4800 rpm, but it had a very high torque of 241 Nm at 3250 rpm. For which he received the nickname "gasoline diesel".

Models equipped with such an engine were designated 325e, 525e, and in the American market 328e and 528e, respectively.

The M20 engine was installed on cars of the third and fifth series.

Third series:

E21 - 320 - 2 liters, carburetor only, 323, 323i - 2.3 liters carburetor or K-Jetronic mechanical injection.
E30 - 320i, 323i - 2.0, 2.3 liters - with K-Jectrinic or L (E) -Jetronic injection system, 325i, 325e - 2.5, 2.7 liters with Motronic 1.0 Basic injection system.

Fifth series:

E12 - 520 - 2.0 liters - carburetor only.
E28 - 520i - K or L (E) -Jectronic, 525e - 2.7 liters with Motronic 1.0 Basic injection system
E34 - 520i, 525i - 2.5, 2.5 liters with Motronic 1.0 injection system

BMW M20 engine block heads.

Several types of cylinder heads were used on the M20, although the differences between them were very small. Heads with reduced intake ports were installed on the M60 Carburetor engines and on the K-Jetronic M20, or rather, with the advent of the L-Jetronic injection system, the intake ports were significantly expanded.

A smaller cross-section of the inlet channels was required for a more correct mixture formation (features carburetor operation), as well as for better filling of the cylinders at low speeds.

For the M20 B25 engine, the block head has also been significantly changed. Namely, oversized valves are installed - inlet 42, outlet - 36. Instead of 40 and 34 for other modifications.

Nevertheless, the heads are partially interchangeable, although sometimes with some alterations.

For example, B20 and B23 are completely interchangeable, B25 c B27 c 9/87 are also completely interchangeable, and with some alterations B20 / B23 and B27 (up to 12/86), and, of course, carburetor ones are interchangeable with injection ones.

B27 block head One of the most interesting heads used.

Depending on the years of production, they were both with thin intake channels (as on carburetor engine M60 and on the K-Jetronic M20) and a combustion chamber similar to the B20, as well as with large, almost rectangular intake ports, an enlarged combustion chamber and a camshaft with 7 journals (if you replace the camshaft, you get a complete copy of the B25). But there were also intermediate versions - enlarged oval intake ports, an enlarged combustion chamber and a camshaft with 4 journals.

Engine M21 2.5 liters (diesel) 82-91. (E28, E30)

The M21, a 6-cylinder diesel engine, was the first diesel in BMW's history. Production began in 1982 to fit the 524td in the newly introduced E28 body. The M21 was equipped with a turbocharger, which allowed the diesel version to retain the image of a dynamic machine inherent in all BMW models. With the release of the new E30 3 Series bodywork, the M21 has another application, the 324td.

M30 engine of 2.5, 2.8, 3.0, 3.2, 3.5 liters

BMW lured Bernard Oswald from Ford to develop the second generation of six-cylinder engines in the mid-sixties. The first were six-cylinder engines with seven crankshaft bearings. They were used in the new sedans of the E3 series in 1968. The successful M10 formula was again applied - a cast iron block, an aluminum head with a camshaft chain drive. After 1972, the development took place under the control of Gustav Ederer and it was then that the first model with 4 valves appeared - the M88

The M30 engine is a large inline 6-cylinder engine with 2.5, 2.8, 3.0, 3.2 and 3.5 liter displacement. It can be found on the 5 Series (E12, E28 and E34), 6 Series (E24) and 7 Series (E23 and E32), as well as the famous BMW M1.

The M30 is an engine for a quiet ride, it has too heavy piston and too large piston strokes, which do not allow it to spin up quickly and create heavy loads on the bearings (liners).

Also, due to the high mass of the piston system, the engine is very picky about oil, if you feed it with mineral oil and at the same time keep it in the 4-6 thousand rpm range, after a few thousand you will have to grind the crankshaft. Only synthetic oil needs to be poured into this engine, and if you like to turn it, then on volumes of more than 2.8 liters, an oil cooler must be installed.

On the other hand, the advantages of inline-six balance and high power at low revs more than compensate for these disadvantages.

Also, the M30 - was the second and last engine to be turbocharged - turbocharged modifications of the M30 were used only in the 745i in the E23 body. In fact, their volume was 3.2 and 3.4 liters, depending on the modification. But both variants were marked M102. The power is the same - 252 hp. The main difference is the ignition and power system.

The engine was installed on cars of the third, fifth, sixth and seventh series.

3rd series:

E30 - 333i - 3.2. liters, with the Motronic injection system. Supplied only to the UAE.

5th series:

6th series:

E24 - 628CS with carburetor and injection (628CSi), 633CSi, 635CSi - injector only.

7th series:

E23 - 728 injector / carburetor, 730 carburetor, 732i / 733i, 735i, 745i - turbocharged version of the engine was installed on the 745i.
E32 - 730i, 735i - 3.0 and 3.5 liters, respectively.

BMW M30 engine block heads.

The cylinder head of the BMW M30 engine is perhaps the most unified of all.

Only the carburetor and injection heads have cardinal differences, and the difference is so strong that it is impossible to interchange them in principle.

Otherwise, the heads of the block are completely identical, right down to the valve timing (camshafts).

Otherwise, in the design of the cylinder head there are no cardinal differences from other BMW engines. the movement of gases through the engine is transverse, the combustion chambers have a three-spherical shape, a V-shaped arrangement of valves with an overhead camshaft.

M88 24-valve modification M30 1979

Based on the M30 engine, a model with two camshafts and 4 valves per cylinder was developed. Initially, they were installed on M1 supercars, later the same engine with the M88 / 3 coding was installed on the M635CSi model, although it was later designated S38 B35.

Volume	Cylinder diameter / piston stroke	Start release	Used in models
			M1, E24 M635CSi, E28M5
			E34M5
			E34M5

In preparing this article, materials from the site were used BMW Russian pages

M10 engine

Volume 1.5, 1.8, 2.0 liters
M10 - 4-cylinder 8-valve small displacement engine. Apparently, it should be recognized as the longest-serving record holder in the series of BMW engines. An incredibly successful design was developed for the 114 body back in the early 60s. A Russian motorist can easily familiarize himself with the "original" version of the M10 by looking under the hood of a Moskvich-412 or 2140 (it was the M10 that AZLK copied when developing its "own" engine). Such longevity, on the one hand, speaks of a wonderful design, on the other, it makes it clear that on later BMW models this engine looks too outdated.

Before this engine appeared in the "new class" 1500 sedans, BMW's post-war engines featured a pre-war redesigned 2 liter inline-six, a great but very expensive aluminum V8, and several tailored motorcycle engines. The history of the M10 engine dates back to 1958, when engineer Alex Falkenhausen proposed a 1-liter four-cylinder engine for the 700 model. The engine never made it to production, but its basic design concepts found application in a "new class" engine. It was a design with a cast iron cylinder block, an aluminum head and a chain drive of one camshaft. It was created with a margin, which later allowed to bring the working volume up to 2 liters and gave many variations of this motor for almost a quarter of a century. A turbine was also installed on the 2 liter version in 1973 - these engines were used in the 2002 turbo models.

In the "new" history, the M10 was installed on the E12 (models 518, 520i), E21 (315, 316, 318, 318i, 320i), E28 (518) and E30 (315, 316, 318i).

	Cylinder diameter / piston stroke		Used in models

			1600, 1600Т1, 1600-2, 1602 1502,1600GT E21 316, 315
			1800, 1800Т1, 1800TI / SA
			1800, 1802 E21 316, 318, 318i E28 518, 518i E30 316, 318i
			2000, 2002, 2002ti, 2002tii 2000C 2000CS E21 320, 320I, E12 520i

S14 engines (1986 - 1991)

Based on the M10 block, the S14 was developed by BMW Motorsport for the E30 M3.

Volume: 2302 (2467)
... Bore: 93.4 (95)
... Piston stroke: 84 (87)
... Introduced 1986 / (1989)

* The box contains data for M3 Sport Evolution

M20 engine of 2.0, 2.3, 2.5, 2.7 liters

Basically, the engine was intended for the new and first 5-series car that appeared in 77, the E12. To create modern, economical and inexpensive versions of cars. In addition, a more powerful engine was also required for the 3-series cars, under the hood of BMW three-ruble cars there was simply not enough space for the M30 (M89) engines.

The M20 does not have a gas pump in the cylinder block, and the number of teeth on the timing belt has also changed - M60 - 111, M20 - 128, and since 1985 - 127. The timing gears and the belt tensioner pulley have changed accordingly.

Further development of the M20 brought a 2.5 liter 170 strong version and a high-torque derated 2.7 liter modification.

Models equipped with such an engine were designated 325e, 525e, and in the American market 328e and 528e, respectively.

The M20 engine was installed on cars of the third and fifth series.

Third series:

E21 - 320 - 2 liters, carburetor only, 323, 323i - 2.3 liters carburetor or K-Jetronic mechanical injection.
... E30 - 320i, 323i - 2.0, 2.3 liters - with K-Jectrinic or L (E) -Jetronic injection system, 325i, 325e - 2.5, 2.7 liters with Motronic 1.0 Basic injection system.

Fifth series:

E12 - 520 - 2.0 liters - carburetor only.
... E28 - 520i - K or L (E) -Jectronic, 525e - 2.7 liters with Motronic 1.0 Basic injection system
... E34 - 520i, 525i - 2.5, 2.5 liters with Motronic 1.0 injection system

BMW M20 engine block heads.

A smaller cross-section of the inlet channels was required for more correct mixture formation (features of the carburetor operation), as well as for better filling of the cylinders at low speeds.

For the M20 B25 engine, the block head has also been significantly changed. Namely, oversized valves are installed - inlet 42, outlet - 36. Instead of 40 and 34 for other modifications.

Nevertheless, the heads are partially interchangeable, although sometimes with some alterations.

B27 block head One of the most interesting heads used.

Depending on the years of production, they were both with thin intake channels (both on the M60 carburetor engine and on the K-Jetronic M20) and a combustion chamber similar to the B20, as well as with large, almost rectangular intake channels, an enlarged combustion chamber and a camshaft with 7 necks (if you replace the camshaft, you get a complete copy of B25). But there were also intermediate versions - enlarged oval intake ports, an enlarged combustion chamber and a camshaft with 4 journals.

Engine M21 2.5 liters (diesel) 82-91. (E28, E30)

The M21, a 6-cylinder diesel engine, was the first diesel in BMW's history. Production began in 1982 to fit the 524td in the newly introduced E28 body. The M21 was equipped with a turbocharger, which allowed the diesel version to retain the image of a dynamic machine inherent in all BMW models. With the release of the new E30 3 Series bodywork, the M21 has another application, the 324td.

M30 engine of 2.5, 2.8, 3.0, 3.2, 3.5 liters

The M30 is an engine for a quiet ride, it has too heavy piston and too large piston strokes, which do not allow it to spin up quickly and create heavy loads on the bearings (liners).

On the other hand, the advantages of inline-six balance and high power at low revs more than compensate for these disadvantages.

The engine was installed on cars of the third, fifth, sixth and seventh series.

3rd series:

E30 - 333i - 3.2. liters, with the Motronic injection system. Supplied only to the UAE.

5th series:

E12 - 525 - 2.5 liters with carburetor, 528 - 2.8 liters. with carburetor and injector, 535i - 3.5 liters, with injector only.
... E28 - models 525i, 528i, and since 1985 535i and M535i. Starting with the E28 body, only injection modifications were installed.
... E34 - 530i - 3L, 535i - 3.5L Also, only an injector with a Motronic injection system and a crankshaft position sensor located on the crankshaft damper, and not on the gearbox.

6th series:

E24 - 628CS with carburetor and injection (628CSi), 633CSi, 635CSi - injector only.

7th series:

E23 - 728 injector / carburetor, 730 carburetor, 732i / 733i, 735i, 745i - turbocharged version of the engine was installed on the 745i.
... E32 - 730i, 735i - 3.0 and 3.5 liters, respectively.

BMW M30 engine block heads.

The cylinder head of the BMW M30 engine is perhaps the most unified of all.

Only the carburetor and injection heads have cardinal differences, and the difference is so strong that it is impossible to interchange them in principle.

Otherwise, the heads of the block are completely identical, right down to the valve timing (camshafts).

M88 24-valve modification M30 1979

Engine M40, M42, M43, M44 1.6-1.8 liters from 1987 (E28, E30, E34, E36, E39, Z3)

The 1.8-liter M40 engine was developed in 1987 to replace the outdated M10 with a 3-series (E30 body). He inherited the design of the cast-iron cylinder block already familiar from the M10, however, hydraulic compensators were already used in the aluminum head, which, together with the change of the camshaft chain drive on the belt, made the engine much quieter. However, in the next model, the M43 was again used chain drive camshaft as in the four-valve modifications of this engine M42 and M44.

Two years later (in 1989), a lightweight modification of the M40 with a volume of 1.6 liters was released (according to some sources, this engine has the code M43). M40 engines were widely used to equip junior body models E30, E36, Z3.

Cylinder diameter / piston stroke	Start release	Used in models
		E30 316i, E36 316i
		E30 318i, 318iS, E34 518i, E36318i

		E34 518i E36 318i


		Z3, E36 318ti E36 318iS (M44)

M41 engine 1994 - 1998

BMW's first four-cylinder engine based on the M51 engine. It was produced only with a turbine and an intercooler. Installed on the E36 318tds model.

Volume: 1665
... Cylinder diameter: 80
... Piston stroke: 82.8
... Introduced 1994

M47 engine, since 1998

Further development of the M41 engine.

Volume: 1951
... Cylinder diameter: 88
... Piston stroke: 84
... Introduced 1998

M50 six-cylinder engines (1990-1995)

The next step in the development of six-cylinder engines was the installation of two camshafts and four valves per cylinder. Since 1992, the VANOS system was installed on M50 engines, which made it possible to change the valve opening / closing times. For the M3, BMW Motorsport developed first a 3-liter version and then a 3.2-liter version with dual VANOS, which already controlled both the intake and exhaust valves.

M51 engine, from 1991

Volume: 2498
... Cylinder diameter: 80
... Piston stroke: 82.8

M51 engine, from 1991

For the second generation diesel engines the M50 engine was taken as a basis. All versions were produced with a turbine, and later with an intercooler.

Volume: 2498
... Cylinder diameter: 80
... Piston stroke: 82.8
... Introduced 1991 (model with intercooler from 1993)
... M51 engines were supplied for Opel Omega and Range Rover cars

M52 six-cylinder engines, from 1995

The M50 engine in 1995 had an aluminum block of cylinders and a new M52 coding. It was produced in 3 variations - 2, 2.5 and 2.8 liters. Double VANOS has been installed on models 2.5 and 2.8 since 1998

M57 engine, since 1998

The third generation of diesel engines is produced only with a turbine and an intercooler and has minor modifications for different models... It is installed on the E46 330d E39 530d E38 730d.

Volume: 2926
... Bore: 88.8
... Piston stroke: 84
... Introduced 1998

M60 V8 engines 1992-1996

After a hiatus of almost 3 decades, BMW has finally decided to return to the V8 formula. Engines were developed for the 5 and 7 series. These all-aluminum engines had 4 valves per cylinder and 4 camshafts, two in each head.

M62 V8 engines, from 1996

Further development of the M60 engines brought an increase in their volume. The new engines received the M62 marking, and since 1999 the VANOS system.

Motorsport V8 engine, since 1998

The engine was developed for the E39 M5 based on the M62 and received the factory code S62. It was equipped with a double vANOS system... Later, the same engine was installed on new model Z8.

M70 V12 engine 1987-1995

After the refusal in the mid-seventies from the creation of the V12 engine, the most powerful were the turbocharged inline sixes M88 and M102, but a decade later BMW abandoned the turbocharged gasoline engines and completed the development of the V12 engine, which was subsequently installed on the 7 Series sedans. In 1992, BMW Motorsport developed 5.6 for the 850CSi. liter engine designated S70 B56.

M73 V12 engine, from 1995

The next modification, the M70 V12, had an increased volume and greater elasticity due to the extended piston stroke.

Volume: 5379
... Cylinder diameter: 85
... Piston stroke: 79
... Introduced 1999