BMW Motorsport GmbH, a division of the BMW automaker, is responsible for developing the BMW S63B44 engine. It was initially employed in the manufacturing of the BMW X6M and is a variation of the N63 series. This engine series places a strong focus on the unit’s overall high technical characteristics and economical fuel consumption. The S63 makes extensive use of the crossover outlet manifold, the most recent Valvetronic system, and numerous other innovations developed by BMW engineers.
Specifications
| 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 10 |
| 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 |
14.0 7.6 9.9 |
| Oil consumption, gr/1000 km | up to 1000 |
| Recommended engine oil | 5W-30 5W-40 |
| Engine oil capacity, liter | 8.5 |
| Normal engine operating temperature, °C | 110-115 |
| Transmission — 6AT — M DCT — 8AT |
ZF 6HP26S GS7D36BG 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 following issues are typical of the BMW S63 engine: misfiring, water hammer, and excessive oil consumption.
Coking of the piston grooves and ring wear are linked to the issue of increased oil consumption. By performing a thorough overhaul and replacing the rings, the malfunction is resolved. Alusil corrodes due to rapid oil consumption; in this case, the cylinder block is replaced.
The turbines are situated in between the cylinders, and when the block collapses, there is a significant concentration of heat transfer. This is where the turbines’ oil return pipes pass, which coke and cause the turbines to fail. Both the vacuum tubes and the cooling system’s plastic tubes are adversely affected by the high temperature in the breakup.
You must inspect the candles and replace them with comparable M-series candles if there are dips during ignition.
The piezo injectors are the cause of the water hammer; they must be changed.
Monitoring the motor’s condition and performing routine maintenance are essential to eliminating issues during the power unit’s operation. To prevent major issues, worn-out parts must be replaced as soon as possible.