Nissan K25 Engine Specifications
The Nissan K25 engine is a well-regarded powerplant known for its reliability and efficiency. This engine is commonly found in various Nissan models, particularly in markets where compact and mid-sized vehicles are popular. Below, we delve into the detailed specifications of the K25 engine.
| Specification | Details |
|---|---|
| Engine Type | Inline 4-cylinder |
| Displacement | 2.5 liters (2488 cc) |
| Fuel System | Multi-Point Fuel Injection (MPFI) |
| Power Output | Approximately 169 hp (126 kW) at 6000 rpm |
| Torque | Approx. 244 Nm (180 lb-ft) at 4000 rpm |
| Compression Ratio | 9.6:1 |
| Valvetrain | DOHC, 16 valves |
| Fuel Type | Regular unleaded gasoline |
| Engine Weight | Approx. 130 kg (287 lbs) |
Engine Configuration
The Nissan K25 engine features a robust inline 4-cylinder configuration. This design is favored for its balance of performance and fuel efficiency. Below are some key aspects of the engine configuration:
Key Features
- Inline 4-Cylinder: This configuration allows for a compact design, contributing to the overall weight reduction of the vehicle.
- Double Overhead Camshaft (DOHC): The DOHC design enhances the engine’s ability to breathe, improving power output and efficiency.
- Multi-Point Fuel Injection: This system ensures precise fuel delivery, optimizing combustion and reducing emissions.
- Variable Valve Timing: Some variants of the K25 may include this feature, which adjusts the timing of the intake and exhaust valves for better performance across different RPM ranges.
Engine Oil Specifications
Proper lubrication is crucial for the longevity and performance of the Nissan K25 engine. Below are the recommended engine oil specifications:
| Specification | Details |
|---|---|
| Oil Type | Synthetic or Conventional |
| Viscosity Grade | 5W-30 or 10W-30 |
| Oil Capacity (with filter) | Approx. 4.5 liters (4.8 quarts) |
| Oil Change Interval | Every 5,000 to 7,500 miles (8,000 to 12,000 km) |
Service Intervals
Regular maintenance is essential to keep the Nissan K25 engine running smoothly. Below are the recommended service intervals for various maintenance tasks:
Maintenance Schedule
- Oil Change: Every 5,000 to 7,500 miles (8,000 to 12,000 km)
- Air Filter Replacement: Every 15,000 to 30,000 miles (24,000 to 48,000 km)
- Fuel Filter Replacement: Every 30,000 miles (48,000 km)
- Spark Plug Replacement: Every 60,000 miles (96,000 km)
- Coolant Flush: Every 60,000 miles (96,000 km)
- Transmission Fluid Change: Every 30,000 to 60,000 miles (48,000 to 96,000 km)
Conclusion
The Nissan K25 engine is a versatile and efficient powerplant that has earned a reputation for reliability. With its well-thought-out specifications and maintenance requirements, it serves as a solid choice for drivers seeking a balance of performance and economy. Regular maintenance and adherence to oil specifications will ensure that the K25 engine continues to perform optimally for years to come.
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