BMW M50 Engine Specifications
The BMW M50 engine is a notable inline-six engine that was produced by BMW from 1989 to 1996. It is renowned for its performance and reliability, making it a popular choice among enthusiasts. Below are the detailed specifications of the M50 engine.
| Specification | Details |
|---|---|
| Engine Type | Inline-6 |
| Displacement | 2.5 L (2494 cc) |
| Bore x Stroke | 84 mm x 75 mm |
| Compression Ratio | 10.0:1 |
| Power Output | 192 hp (143 kW) at 5800 rpm |
| Torque | 245 Nm (181 lb-ft) at 4000 rpm |
| Fuel System | Multi-Point Fuel Injection (MPI) |
| Fuel Type | Premium Unleaded |
| Max RPM | 6500 rpm |
| Weight | Approx. 160 kg (352 lbs) |
Engine Configuration
The M50 engine features a robust inline-six configuration, which is known for its smooth operation and balanced performance. The design includes:
- Valvetrain: DOHC (Dual Overhead Camshaft) with 24 valves.
- Engine Block: Cast iron, providing durability and strength.
- Cylinder Head: Aluminum alloy, which contributes to weight reduction and improved heat dissipation.
- Intake System: The M50 utilizes a variable intake manifold, enhancing performance across the RPM range.
- Exhaust System: Features a single exhaust manifold, which is efficient for the engine’s design.
The M50 engine is also known for its ability to be modified easily, making it a favorite among tuners and performance enthusiasts. Its design allows for various upgrades, including turbocharging and enhanced intake systems.
Engine Oil Specifications
Proper lubrication is crucial for the longevity and performance of the BMW M50 engine. Below are the recommended engine oil specifications:
| Specification | Details |
|---|---|
| Oil Type | Synthetic or Conventional |
| Viscosity Rating | 5W-30 or 10W-40 |
| Oil Capacity (with filter) | 6.5 liters (6.9 quarts) |
| Oil Filter Part Number | BMW 11427512345 |
Service Intervals
Regular maintenance is essential for the M50 engine to ensure optimal performance and longevity. Below are the recommended service intervals:
- Oil Change: Every 7,500 miles (12,000 km) or every 12 months, whichever comes first.
- Oil Filter Replacement: Every oil change.
- Air Filter Replacement: Every 15,000 miles (24,000 km).
- Fuel Filter Replacement: Every 30,000 miles (48,000 km).
- Spark Plug Replacement: Every 30,000 miles (48,000 km).
- Coolant Change: Every 2 years or 30,000 miles (48,000 km).
Conclusion
The BMW M50 engine is a well-engineered powerplant that combines performance, reliability, and ease of maintenance. Understanding its specifications, configuration, oil requirements, and service intervals is essential for any owner or enthusiast. By adhering to the recommended maintenance schedule and using the proper engine oil, you can ensure that your M50 engine continues to perform at its best for years to come.
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