BMW S14 Engine Specifications
The BMW S14 engine is a notable powerplant that gained fame for its performance in the BMW E30 M3 and other models. This four-cylinder engine is celebrated for its engineering excellence and robust performance characteristics. Below is a detailed overview of its specifications.
| Specification | Details |
|---|---|
| Engine Type | Inline-4 |
| Displacement | 2.3 liters (2302 cc) |
| Power Output | 192 hp (143 kW) at 6750 rpm |
| Torque | 170 lb-ft (230 Nm) at 4750 rpm |
| Bore x Stroke | 84 mm x 87 mm |
| Compression Ratio | 10.5:1 |
| Fuel System | Multi-point fuel injection |
| Valvetrain | DOHC, 4 valves per cylinder |
| Weight | Approx. 140 kg (308 lbs) |
| Max RPM | 7000 rpm |
Engine Configuration
The S14 engine is a well-engineered inline-four configuration, which is known for its balance of performance and efficiency. Below are some key aspects of its configuration:
Key Features
- Inline-4 Design: The engine features a straight-four layout, which contributes to a compact size and lower weight.
- Double Overhead Camshaft (DOHC): This design allows for better airflow and higher RPM capabilities.
- 4 Valves per Cylinder: The S14 utilizes a 4-valve-per-cylinder setup, enhancing performance and efficiency.
- Multi-Point Fuel Injection: This system ensures optimal fuel delivery and combustion efficiency.
Performance Characteristics
- High Revving: The S14 is designed to reach high RPMs, providing a thrilling driving experience.
- Responsive Power Delivery: The engine is known for its linear power delivery, making it suitable for both street and track use.
- Strong Torque Curve: The torque is readily available at mid-range RPMs, which enhances drivability.
Engine Oil Specifications
Proper lubrication is crucial for the longevity and performance of the S14 engine. Below are the recommended engine oil specifications.
Oil Type
- Recommended Oil: Synthetic oil is preferred for its superior performance under high temperatures and pressures.
- Viscosity Rating: 10W-40 is commonly recommended for the S14 engine.
Oil Capacity
| Specification | Details |
|---|---|
| Oil Capacity (with filter) | Approx. 5.5 liters (5.8 quarts) |
| Oil Capacity (without filter) | Approx. 5.0 liters (5.3 quarts) |
Service Intervals
Regular maintenance is essential for keeping the S14 engine in optimal condition. Below are the recommended service intervals.
Oil Change Intervals
- Every 5,000 to 7,500 miles: It is advisable to change the engine oil and filter within this mileage range, depending on driving conditions.
Other Maintenance Checks
- Air Filter: Inspect and replace every 15,000 miles.
- Fuel Filter: Replace every 30,000 miles.
- Spark Plugs: Check and replace every 30,000 miles for optimal performance.
- Coolant Flush: Recommended every 2 years or 30,000 miles.
Conclusion
The BMW S14 engine is a remarkable piece of engineering that combines performance, efficiency, and reliability. Understanding its specifications, configuration, oil requirements, and service intervals is essential for enthusiasts and owners alike. By adhering to the recommended maintenance practices, drivers can ensure their S14 engine continues to deliver an exhilarating driving experience for years to come.
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