BMW E30 325i Engine Specifications
The BMW E30 325i is a classic model that has garnered a significant following among car enthusiasts. Known for its balanced performance and engaging driving experience, the E30 325i features a robust engine that contributes to its reputation. Below are the detailed engine specifications for the E30 325i.
| Specification | Details |
|---|---|
| Engine Type | Inline 6-cylinder |
| Displacement | 2.5 liters (M20B25) |
| Bore x Stroke | 84 mm x 75 mm |
| Compression Ratio | 8.8:1 |
| Maximum Power | 171 hp (127 kW) at 5,800 rpm |
| Maximum Torque | 164 lb-ft (222 Nm) at 4,000 rpm |
| Fuel System | Electronic fuel injection |
| Transmission Options | 5-speed manual / 4-speed automatic |
| Drive Type | Rear-wheel drive |
Engine Configuration
The engine configuration of the BMW E30 325i plays a crucial role in its performance characteristics. The inline 6-cylinder design is known for its smooth operation and balanced power delivery. Below are some key aspects of the engine configuration:
Key Features of the Engine Configuration
- Inline 6-cylinder layout for optimal balance and smoothness.
- Aluminum alloy cylinder head for reduced weight and improved thermal efficiency.
- Single overhead camshaft (SOHC) design with 12 valves (2 valves per cylinder).
- Electronic fuel injection system for precise fuel delivery and improved emissions.
Engine Oil Specifications
Proper engine oil is essential for maintaining the performance and longevity of the BMW E30 325i’s engine. The following details outline the recommended engine oil specifications:
| Specification | Details |
|---|---|
| Oil Type | Synthetic or conventional oil |
| Viscosity Rating | SAE 10W-40 or SAE 20W-50 |
| Oil Capacity (with filter) | 6.5 quarts (approximately 6.2 liters) |
Service Intervals
Regular maintenance is vital for the performance and reliability of the BMW E30 325i. The following service intervals are recommended for optimal engine health:
Oil Change Intervals
- Every 5,000 miles (8,000 km) or 6 months, whichever comes first.
- Use high-quality engine oil that meets the specifications outlined above.
Other Maintenance Tasks
- Check and replace the air filter every 15,000 miles (24,000 km).
- Inspect and replace spark plugs every 30,000 miles (48,000 km).
- Check coolant levels and replace coolant every 2 years.
- Inspect belts and hoses for wear every 30,000 miles (48,000 km).
Conclusion
The BMW E30 325i is a remarkable vehicle that combines performance, style, and engineering excellence. Understanding its engine specifications, configuration, oil requirements, and service intervals is essential for maintaining its performance and longevity. Whether you are a dedicated enthusiast or a casual driver, adhering to these guidelines will ensure that your E30 325i remains in top condition for years to come.
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