BMW S50 Engine Specifications
The BMW S50 engine is a high-performance inline-four engine that has gained recognition for its engineering excellence and robust performance characteristics. It is primarily known for its application in the BMW M3 models during the 1990s. Below is a detailed overview of the engine specifications.
| Specification | Details |
|---|---|
| Engine Type | Inline-4, DOHC |
| Displacement | 3.0 L (2990 cc) |
| Power Output | 286 hp (213 kW) at 7,000 rpm |
| Torque | 320 Nm (236 lb-ft) at 3,500 rpm |
| Compression Ratio | 10.5:1 |
| Fuel System | Multi-Point Fuel Injection |
| Valvetrain | 4 valves per cylinder |
| Max RPM | 7,400 rpm |
| Engine Weight | Approximately 160 kg (352 lbs) |
Engine Configuration
The BMW S50 engine features a sophisticated design that emphasizes performance and efficiency. Below are key aspects of its configuration:
Engine Layout
– Inline Configuration: The S50 is an inline-four engine, which contributes to its compact design and low center of gravity.
– Double Overhead Camshaft (DOHC): This configuration allows for precise control of valve timing and improved airflow, enhancing performance.
Performance Features
– High Revving Nature: The engine is designed to operate efficiently at high RPMs, providing an exhilarating driving experience.
– Multi-Point Fuel Injection: This system ensures optimal fuel delivery, improving combustion efficiency and power output.
Engine Oil Specifications
Proper lubrication is crucial for the longevity and performance of the BMW S50 engine. Below are the recommended engine oil specifications.
Oil Type
– Recommended Oil: Synthetic oil is preferred for the S50 engine due to its superior performance characteristics.
– Viscosity Rating: 10W-60 is the recommended viscosity for optimal performance under various temperature conditions.
Oil Capacity
– Oil Capacity: The engine has an oil capacity of approximately 5.5 liters (5.8 quarts), including the oil filter.
Service Intervals
Regular maintenance is essential to ensure the BMW S50 engine operates at peak performance. Below are the recommended service intervals.
Oil Change Intervals
– Standard Interval: It is advisable to change the engine oil every 7,500 km (approximately 4,650 miles) or every 12 months, whichever comes first.
– Severe Driving Conditions: For those who drive under severe conditions (e.g., racing, frequent short trips), it is recommended to change the oil every 5,000 km (approximately 3,100 miles).
Other Maintenance Tasks
– Air Filter Replacement: Every 30,000 km (approximately 18,600 miles).
– Spark Plug Replacement: Every 60,000 km (approximately 37,300 miles).
– Coolant Change: Every 2 years or 40,000 km (approximately 24,800 miles).
Conclusion
The BMW S50 engine stands out as a remarkable piece of engineering, combining performance, efficiency, and reliability. Understanding its specifications, configuration, oil requirements, and service intervals is essential for enthusiasts and owners alike. Regular maintenance ensures that this high-performance engine continues to deliver an exhilarating driving experience for years to come.
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