BMW N63B44TU engine

In 2012, production of the familiar but improved engine with the addition of TU began. It was produced in Munich, and the main material for the cylinder block was again aluminum. The injector as a power system was no longer a surprise to anyone. The engine again had an external appearance, which was similar to the letter V. Here again 8 cylinders were used, and on each of them 4 valves were installed. The piston stroke of 88.3 millimeters and cylindrical diameter of 89 millimeters remained unchanged. The compression ratio was 10. The engine volume of 4.4 liters looked very impressive. Its output was 450 horsepower at 5500 rpm, and it increased compared to previous variants.

Maximum torque also increased and now amounted to 650 N*m at the same 1750 rpm. Developers recommend using 95 or 98 gasoline to avoid problems and complex breakdowns later. In this unit appeared the environmental norm Euro 6. It continued to weigh 230 kilograms. The consumption on the highway was approximately 7 liters per 100 kilometers, on a mixed distance it was more than 9 liters, and in the city limits almost reached the mark of 13 liters per 100 kilometers.

Oil went away at a speed of 1000 grams per 1000 kilometers or less. And further in the device used oil 5W-30 or 5W-40. 8 and a half liters of oil was in the motor at the same time. Replacement is necessary after passing every 8-10 thousand kilometers. The engine had an operating temperature of about 110 degrees. Its tuning allowed to increase the power to almost 600 horsepower, which was a very serious indicator.

Engine specifications N63B44TU

Advantages

An excellent modernization in 2012 helped to significantly improve this powertrain. It received its famous TU prefix, and for the first time the developers decided to use pistons with a completely different bottom. They also used the latest connecting rods and crankshaft, which was adjusted to the mode of operation of all systems. The apparatus was also made to create its own system that would change the lift height for the intake valves. This was similar to the predecessor variant, but effective and helped the engine develop. Fuel injection was designed for modern technology and was direct injection. Compound camshafts received new improved phase and lift characteristics.

In addition, the system that dealt with changing the VANOS timing was significantly redesigned. Its change limits were slightly increased, in the case of the exhaust by 40 percent, and in the case of the exhaust by 10 percent. In previous versions, the cooling system had just started to be made, so it had quite a few disadvantages at the time, but now it was greatly improved and the oil supply was refined along with it. The intake was improved only a little, but the exhaust was left at the same level, its quality in the past satisfied the manufacturers. The wheel of the turbocharger pump has become slightly larger and more convenient. And the Bosch control system, which has already been mentioned earlier, became the main discovery of this machine. BMW cars with the index 50i received this powertrain, and their owners were very satisfied. The sport turbo motor for X5M, X6M, M5 and M6 was also created on the basis of this engine. Drivers rated this motor as very good.

Disadvantages

The huge oil burn was due to the fact that the piston grooves were heavily caked and lost all their useful functions. Even engines with very low mileage could get this problem. Overhaul in this case is simply necessary, the piston rings must also be replaced with original ones.
Hydrostroke happens at the time when the car stands idle for a long time, for example, in the garage in winter. Bad injectors with piezo properties cause this problem to occur. Yes and the developers have changed these injectors many times during the period of engine manufacture. The latest version of these injectors should completely prevent such troubles. The ignition has been found to have skips. The plugs that are meant for ignition can die at one point. In this respect, the sporty M series, whose plugs are very suitable for this engine, is a great help.

Oil consumption can lead to unplanned corrosion of the alusil. The cylinder block will no longer help in this case and should be replaced. Failure to locate the turbos between the cylinders results in a huge concentration of heat dissipation, which is in the camber. And there also pass the most important lines, which supply oil to the turbine. Then the familiar coxing of the tubes begins, the oil stops flowing and the turbines fail. A very hot microclimate will affect both cooling and vacuum tubes.

In order to use the engine properly and without losses, it is necessary to constantly check its condition and come in for maintenance. This method will help to change critical units for new ones in due time and avoid serious costs in the future.

Chip Tuning

Stage One and Stage Two will help significantly improve the power of this machine. Both of these stages involve the usual firmware and downpipe replacement, which will add about 60 horsepower in total. And the dynamic performance of the car will increase for a small amount of money and allow the driver to get an even more powerful motor. Also 20 horses can give installation of modification of intake or intercoolers.

Modifications

The O1 is produced from 2012 to the present day. This modification has been redesigned and improved several times, as a result, it received the addition of TU letters and changes that were described in the previous sections. Power in this case at 5500-6000 rpm will be equal to the figure of 450 horsepower. Maximum torque will peak at 2000-4500 rpm and will be 650 N*m, which will noticeably add ride quality and dynamics to cars using these powertrains.

This engine is installed on the following models:

BMW 6-Series (F06)

BMW 7-Series (G11, G12)

BMW 7-Series (F01)