BMW N62B48 engine
Content
Model BMW N62B48 is an eight-cylinder V-shaped engine. This engine was produced for 7 years from 2003 to 2010 and was produced in multi-series.
A feature of the BMW N62B48 model is considered to be high reliability, which ensures comfortable and trouble-free operation of the car until the end of the component life.
Design and production: a brief history of the development of the BMW N62B48 engine
The motor was first made in 2002, but did not pass the test tests due to rapid overheating, in connection with which the design was decided to be modernized. Modified engine models began to be put on production cars since 2003, however, the production of large circulation batches began only in 2005 due to the obsolescence of the previous generation of engines.
This is interesting! Also in 2005, the production of the N62B40 model began, which was a stripped down version of the N62B48, which had less weight and power characteristics. The low-powered model was the last series naturally aspirated engine with a V-shaped architecture manufactured by BMW. The next generation of engines was equipped with a blower turbine.
This engine is equipped with only a six-speed automatic transmission - models for mechanics failed during the first test tests before entering serial production. The reason was the immunity of electronic equipment to manual operation, which reduced the guaranteed life of the motor by almost half.
The BMW N62B48 engine became a necessary improvement for the automobile concern during the release of the restyled version of the X5, which made it possible to modernize the car. An increase in the volume of working chambers to 4.8 liters while maintaining stable operation at any speed ensured the wide popularity of the engine - the BMW N62B48 version is appreciated by V8 lovers at the present time.
It is important to know! The VIN number of the motor is duplicated on the sides in the upper part of the product under the front cover.
Specifications: what is special about the motor
The model is made of aluminum and runs on an injector, which guarantees rational use of fuel and the optimal ratio of power to weight of the equipment. The design of the BMW N62B48 is an improved version of the M62B46, in which all the weak points of the old model have been eliminated. Distinctive features of the new engine are:
- Enlarged cylinder block, which made it possible to install a larger piston;
- A crankshaft with a long stroke - an increase of 5 mm provided the motor with greater traction;
- Improved combustion chamber and fuel inlet/outlet system for increased power.
The engine functions stably only on high-octane fuel - the use of gasoline of a grade lower than A92 is fraught with detonation and a decrease in service life. The average fuel consumption is from 17 liters in the city and 11 liters on the highway, exhaust gases comply with Euro 4 standards. The engine requires 8 liters of 5W-30 or 5W-40 oil with regular replacement after 7000 km or 2 years of operation. The average consumption of technical fluid by the engine is 1 liter per 1000 km.
| type of drive | Standing on all wheels |
|---|---|
| Number of valves | 8 |
| Number of valves per cylinder | 4 |
| The piston stroke, mm | 88.3 |
| Cylinder diameter, mm | 93 |
| Compression ratio | 11 |
| Combustion chamber volume | 4799 |
| Maximum speed km / h | 246 |
| Acceleration to 100 km / h, from | 06.02.2018 |
| Engine power, hp / rpm | 367/6300 |
| Torque, Nm / rpm | 500/3500 |
| Operating temperature of the engine, hail | ~ 105 |
The installation of Bosch DME ME 9.2.2 electronic firmware on the BMW N62B48 made it possible to prevent power losses and achieve high performance with low heat generation - the engine cools well at any speed and load. The engine was installed on the following car models:
- BMW 550i E60
- BMW 650i E63
- BMW 750i E65
- BMW X5 E53
- BMW X5 E70
- Morgan Aero 8
This is interesting! Despite the production of cylinder blocks from aluminum, the engine runs smoothly up to 400 km without loss of performance. The endurance of the engine is explained by the balanced functioning of the automatic transmission and the electronic fuel supply system, which made it possible to reduce the load on all structural components.
Weaknesses and vulnerabilities of the BMW N62B48 engine
All vulnerabilities in the assembly of the BMW N62B48 appear only after the end of the warranty maintenance: up to 70-80 km of run, the engine functions properly even with intensive use, then the following problems may appear:
- Increased consumption of technical fluids - the cause is a violation of the tightness of the main pipes of the oil pipeline and the failure of oil caps. A malfunction is observed when reaching the mark of 100 km of run and it will be necessary to carry out a complete replacement of the components of the oil pipeline before the overhaul 000-2 times.
- Uncontrolled oil consumption can be prevented by regular diagnostics and replacement of sealing rings. It is also important not to save on the quality of oil-resistant rings - the use of analogues or replicas of original consumables is fraught with an early leak;
- Unstable revs or problems with power gain - the reasons for insufficient traction or "floating" revs can be engine decompression and air leaks, failure of the flow meter or valvetronic, as well as a breakdown of the ignition coil. At the first sign of unstable operation of the motor, it is required to check these structural units and eliminate the malfunction;
- Oil leakage - the problem lies in the worn gasket of the generator or the crankshaft oil seal. The situation is corrected by the timely replacement of consumables or the transition to more durable counterparts - oil seals will have to be changed every 50 km;
- Increased fuel consumption - a problem occurs when the catalysts are destroyed. Also, fragments of catalysts can get into the engine cylinders, which will lead to the formation of damage to the aluminum body. The best way out of the situation is to replace the catalysts with flame arresters when buying a car.
In order to extend the life of the engine, it is recommended not to expose the engine to dynamic changes in loads, and also not to save on the quality of fuel and technical fluids. Regular replacement of components and sparing operation will increase the engine life up to 400-450 km before the first need for major repairs.
It is important to know! Particular attention must be paid to the BMW N62B48 engine during mandatory warranty maintenance and when approaching the "capital". Neglecting the engine at these stages negatively affects the automatic transmission resource, which is fraught with costly repairs.
Possibility of tuning: we increase the power correctly
The most popular way to increase the power of the BMW N62B48 is to install a compressor. Injection equipment allows you to increase engine power by 20-25 horses without reducing the service life.
When buying, you need to give preference to compressor models that have a stable discharge mode - in the case of the BMW N62B48, you should not chase high speeds. Also, when installing the compressor, it is recommended to leave the stock CPG and change the exhaust to an analog of a sports type. After mechanical tuning, it is desirable to change the firmware of the electrical equipment by setting the ignition and fuel supply system to the new engine parameters.
Such tuning will allow the engine to produce up to 420-450 horsepower at a maximum compressor pressure of 0.5 bar. However, this upgrade is not practical, as it requires considerable investment - it is easier to purchase a car based on the V10.
Is it worth buying a car based on the BMW N62B48
The BMW N62B48 engine is characterized by high efficiency, allowing efficient use of fuel and delivering more power than its predecessor. The engine is economical, durable and unpretentious in maintenance. The main drawback of the model is only the price: it is rather problematic to find a motor in good condition at a fair price.
Particular attention should be paid to the repairability of the motor: despite the age of the model, it will not be difficult to find components for the engine due to its popularity. A wide range of original parts, as well as analogues, is available on the market, which reduces the cost of repairs. A car based on the BMW N62B48 will be a good purchase and suitable for long-term operation.
