Engine BMW S63B44

The BMW S63B44 engine is the development of a subsidiary of the BMW carmaker – BMW Motorsport GmbH. It is a variant of the N63 series and was first used in the production of the BMW X6M. The main emphasis of this engine series is placed on economical fuel consumption and high technical characteristics of the unit as a whole. The crossover outlet manifold, the latest Valvetronic system and many other latest developments by BMW engineers have been widely used in the S63.


Manufacturer Munich Plant
Also called S63
Production years 2009
Cylinder block alloy aluminum
Fuel system injector
Configuration V
Number of cylinders 8
Valves per cylinder 4
Piston stroke, mm 88.3
Cylinder bore, mm 89
Compression ratio 9.3
Displacement, cc 4395
Power output, hp 555 /6000 rpm
560 /6000-7000 rpm
575 /6000-7000 rpm
600 /6000-7000 rpm
Torque output, Nm / rpm 680 /1500-5650 rpm
680 /1500-5750 rpm
680 /1500-6000 rpm
700 /1500-6000 rpm
Fuel type petrol
Euro standards Euro 5
Euro 6 (TU)
Weight, kg 229
Fuel consumption, L/100 km (for M5 F10)
— city
— highway
— combined
Oil consumption, gr/1000 km up to 1000
Recommended engine oil 5W-30
Engine oil capacity, liter 8.5
Normal engine operating temperature, °C 110-115
— 6AT
— 8AT
ZF 8HP70
Gear ratios, 6AT 1 — 4.17
2 — 2.34
3 — 1.52
4 — 1.14
5 — 0.87
6 — 0.69
Gear ratios, M DCT 1 — 4.806
2 — 2.593
3 — 1.701
4 — 1.277
5 — 1.000
6 — 0.844
7 — 0.671
Gear ratios, 8AT 1 — 5.000
2 — 3.200
3 — 2.143
4 — 1.720
5 — 1.313
6 — 1.000
7 — 0.823
8 — 0.640

Disadvantages of the S63B44 engine

The BMW S63 engine is characterized by the following malfunctions: high oil consumption, water hammer, misfiring.

The problem of increased oil consumption is associated with coking of the piston grooves, wear of the rings. The malfunction is eliminated by carrying out a major overhaul with the replacement of the rings. The rapid consumption of oil causes corrosion of alusil, in such a situation, the cylinder block is changed.

The turbines are located between the cylinders – there is a high concentration of heat transfer in the collapse of the block. The oil return pipes of the turbines pass here, which coke, and the turbines fail. The high temperature in the breakup negatively affects the vacuum tubes as well as the plastic tubes of the cooling system.

If there are dips during ignition, you need to check the candles, if necessary, replace them with similar ones from the M-series.

In case of water hammer, the reason lies in the piezo injectors, they need to be replaced.

In order to neutralize problems in the process of using the power unit, it is necessary to monitor the condition of the motor and carry out regular maintenance. Worn out components must be replaced in a timely manner in order to avoid serious problems.

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