Nissan RB25DET Engine Specifications
The Nissan RB25DET is a well-regarded inline-six engine that has garnered a reputation for its performance and tuning potential. Originally designed for the Nissan Skyline series, this engine has become a favorite among car enthusiasts and tuners alike. Below is a detailed breakdown of its specifications.
| Specification | Details |
|---|---|
| Engine Type | Inline-6, DOHC, Turbocharged |
| Displacement | 2.5 liters (RB25) |
| Power Output | 250 hp (186 kW) @ 6,000 rpm |
| Torque | 274 lb-ft (372 Nm) @ 4,800 rpm |
| Compression Ratio | 9.0:1 |
| Fuel System | Multi-Point Fuel Injection |
| Turbocharger | Garrett T28 |
| Weight | Approximately 160 kg (352 lbs) |
| Engine Management | Nissan ECU |
Engine Configuration
The RB25DET engine features a robust configuration that contributes to its performance and reliability. Here are some key aspects of its design:
Engine Layout
- Inline-six configuration provides smooth power delivery.
- Double Overhead Camshaft (DOHC) design allows for efficient airflow and better performance.
- Turbocharged setup enhances power output and torque.
Components
- Aluminum alloy cylinder head for reduced weight and improved thermal efficiency.
- Cast iron engine block for durability and strength.
- Forged steel crankshaft for enhanced performance and longevity.
- High-flow intake and exhaust manifolds to optimize airflow.
Engine Oil Specifications
Proper maintenance of the RB25DET engine includes using the correct engine oil. Here are the specifications and recommendations for engine oil:
Oil Type
- Recommended Oil: Synthetic or Semi-Synthetic Oil
- Viscosity Rating: 10W-30 or 10W-40
Oil Capacity
- Oil Capacity with Filter: Approximately 5.5 liters (5.8 quarts)
Oil Change Intervals
- Standard Interval: Every 5,000 to 7,500 km (3,000 to 5,000 miles)
- Severe Conditions: Every 3,000 km (1,800 miles) or as needed
Service Intervals
Regular servicing is crucial for maintaining the performance and longevity of the RB25DET engine. Below are the recommended service intervals:
General Maintenance Schedule
- Oil Change: Every 5,000 to 7,500 km (3,000 to 5,000 miles)
- Air Filter Replacement: Every 15,000 km (9,300 miles)
- Fuel Filter Replacement: Every 30,000 km (18,600 miles)
- Spark Plug Replacement: Every 30,000 km (18,600 miles)
- Coolant Flush: Every 60,000 km (37,300 miles)
Timing Belt Replacement
- Recommended Interval: Every 100,000 km (62,000 miles)
- Importance: Prevents engine damage due to belt failure.
Conclusion
The Nissan RB25DET engine is a remarkable piece of engineering that combines performance, reliability, and tuning potential. Understanding its specifications, engine configuration, oil requirements, and service intervals is essential for any enthusiast or owner looking to maintain or enhance their vehicle’s performance. Regular maintenance and adherence to service intervals will ensure that the RB25DET continues to deliver an exhilarating driving experience for years to come.
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