BMW M52 Engine Specifications
The BMW M52 engine is a notable inline-six engine that was produced by BMW from 1994 to 2000. It is recognized for its smooth operation, reliability, and performance. The M52 engine was a successor to the M50 engine and was used in various BMW models, including the 3 Series, 5 Series, and Z3.
Engine Specifications Overview
The following table summarizes the key specifications of the BMW M52 engine:
| Specification | M52B20 | M52B25 | M52B28 |
|---|---|---|---|
| Engine Type | Inline-6 | Inline-6 | Inline-6 |
| Displacement | 1991 cc | 2494 cc | 2793 cc |
| Power Output | 150 hp (110 kW) | 189 hp (140 kW) | 193 hp (143 kW) |
| Torque | 190 Nm (140 lb-ft) | 245 Nm (181 lb-ft) | 280 Nm (207 lb-ft) |
| Compression Ratio | 10.0:1 | 10.0:1 | 10.0:1 |
| Bore x Stroke | 80.0 mm x 80.0 mm | 84.0 mm x 75.0 mm | 84.0 mm x 88.0 mm |
| Fuel System | Multi-Point Fuel Injection | Multi-Point Fuel Injection | Multi-Point Fuel Injection |
| Valvetrain | DOHC, 24 Valves | DOHC, 24 Valves | DOHC, 24 Valves |
| Max RPM | 6500 | 6500 | 6500 |
Engine Configuration
The BMW M52 engine features a robust inline-six configuration, which is known for its smoothness and balance. This engine is equipped with a double overhead camshaft (DOHC) design and 24 valves, allowing for efficient airflow and improved performance.
Key Features of the M52 Engine Configuration
- Inline-six layout for optimal balance and smooth operation.
- DOHC design for enhanced performance and efficiency.
- Multi-point fuel injection system for improved fuel atomization.
- Aluminum alloy construction for reduced weight and improved thermal efficiency.
- Chain-driven camshafts for reduced maintenance compared to belt-driven systems.
Engine Oil Specifications
Proper lubrication is crucial for the longevity and performance of the BMW M52 engine. The choice of engine oil and adherence to service intervals can significantly impact engine health.
Recommended Engine Oil Specifications
The following table outlines the recommended engine oil specifications for the BMW M52 engine:
| Specification | Details |
|---|---|
| Oil Type | Synthetic or Semi-Synthetic |
| Viscosity Grade | 5W-30 or 10W-40 |
| API Rating | API SL or higher |
| Oil Capacity (with filter) | 6.5 liters (approx. 6.9 quarts) |
Oil Change Intervals
Regular oil changes are essential for maintaining engine performance. The recommended oil change intervals for the BMW M52 engine are as follows:
- Every 7,500 miles (12,000 km) or 12 months, whichever comes first.
- If the vehicle is driven under severe conditions (e.g., frequent short trips, heavy loads, or extreme temperatures), consider changing the oil every 5,000 miles (8,000 km).
Conclusion
The BMW M52 engine is a well-engineered powerplant that offers a blend of performance, reliability, and efficiency. Understanding its specifications, configuration, and maintenance requirements is essential for any BMW enthusiast or owner. By adhering to the recommended oil specifications and service intervals, you can ensure that your M52 engine remains in optimal condition for years to come.
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