BMW S85B50 Engine
This page lists the S85B50 specifications for the engine built by BMW.
| Fuel Type | Petrol |
|---|---|
| Configuration |
V10 V10 90 Degrees |
| Combustion Type | Naturally Aspirated |
| Displacement (cc) | 4,999 cc |
| Cylinders | 10 |
| Cylinder Bore (mm) | 92 mm |
| Cylinder Stroke (mm) | 75.2 mm |
| Valves | 40 |
| Valves Per Cylinder | 4 |
| Valvetrain | DOHC |
| Compression Ratio | 12:1 |
| Power (kW) | 373 kW @ 7,750 RPM |
| Torque (N⋅m) | 520 N⋅m @ 6,100 RPM |
| Redline (RPM) | 8,250 RPM |
| Weight (kg) | 240 kg |
| Production | 2004 - 2010 |
| Cars Using Engine | 4 |
Where listed, power output figures are based on the most powerful production variant of that engine, because some manufacturers use different engine maps to tune the same engine for better fuel economy, performance or to differentiate models in the range.
Features include:
- 10 electronically actuated individual throttle bodies
- Cast aluminum block with bed plate design split at the crankshaft axis
- Valves actuated through non-rotating inverted bucket cam followers
- Oil-cooled, cast aluminium pistons
- Forged steel crankshaft with counterweights, shared crankpins producing an uneven firing interval of 90 or 54 degrees
- Application of an "ionic current measuring system" for knock sensing. The ionic current system uses a low voltage applied across the spark plugs immediately following the ignition spark, and can detect misfires as well as pre-ignition ("knocking").
- Quasi-dry sump lubricating system where the engine has 2 oil sumps that hold oil, and oil pickup is enhanced by secondary electrical scavenge pumps that feed oil from the smaller sump to the main sump
- Firing order of 1-6-5-10-2-7-3-8-4-9
Cars using the BMW S85B50 Engine
There are 4 cars using this engine:
- BMW - 5 Series - E60 - M5 Saloon M Automatic
- BMW - 5 Series - E60 - M5 Saloon M Manual
- BMW - 5 Series - E61 - M5 Touring M
- BMW - 6 Series - E63 - M6 Coupé M
Last Updated: 14th October 2020 at 17:59:29