Nissan K21 Engine Specifications
The Nissan K21 engine is a notable powertrain that has gained attention for its robust performance and efficiency. Primarily utilized in various Nissan models, this engine is designed to meet the demands of both everyday driving and more strenuous conditions. Below are the detailed specifications of the K21 engine.
| Specification | Details |
|---|---|
| Engine Type | Inline 4-cylinder |
| Displacement | 2.1 liters (2100 cc) |
| Bore x Stroke | 83 mm x 92 mm |
| Compression Ratio | 9.5:1 |
| Maximum Horsepower | 150 hp @ 6000 rpm |
| Maximum Torque | 200 Nm @ 4000 rpm |
| Fuel System | Multi-Point Fuel Injection |
| Fuel Type | Petrol |
| Ignition System | Electronic Ignition |
| Cooling System | Water-cooled |
Engine Configuration
The Nissan K21 engine features a well-engineered configuration that contributes to its performance and reliability. Below are some key aspects of its configuration:
Design and Layout
– Inline Configuration : The K21 engine is designed as an inline 4-cylinder engine, which helps in maintaining a compact size while providing adequate power.
– DOHC (Dual Overhead Camshaft) : This design allows for better airflow and improved performance at higher RPMs.
– Aluminum Alloy Block : The engine block is made from aluminum alloy, which reduces weight and enhances fuel efficiency.
Performance Characteristics
– Power Delivery : The engine is tuned to deliver a smooth power band, making it suitable for both city driving and highway cruising.
– Torque Characteristics : With a peak torque of 200 Nm, the K21 engine provides sufficient low-end torque for better acceleration and responsiveness.
Engine Oil Specifications
Proper maintenance of the Nissan K21 engine includes using the correct engine oil. The specifications for engine oil are crucial for ensuring optimal performance and longevity.
Recommended Engine Oil
– Oil Type : Synthetic or Semi-Synthetic
– Viscosity Rating : 5W-30 or 10W-40
– API Rating : API SN or higher
Oil Capacity
– Oil Capacity (with filter) : Approximately 4.5 liters
Service Intervals
Regular maintenance is essential for keeping the Nissan K21 engine in peak condition. Below are the recommended service intervals for oil changes and general maintenance.
Oil Change Intervals
– Every 5,000 to 7,500 miles (or every 6 months, whichever comes first)
General Maintenance Schedule
– Air Filter Replacement : Every 15,000 miles
– Fuel Filter Replacement : Every 30,000 miles
– Spark Plug Replacement : Every 60,000 miles
– Timing Belt Replacement : Every 100,000 miles
Inspection Points
– Coolant Levels : Check every oil change
– Brake Fluid : Inspect every 12,000 miles
– Transmission Fluid : Change every 30,000 miles
Conclusion
The Nissan K21 engine stands out for its balanced performance, efficiency, and reliability. Understanding its specifications, engine configuration, oil requirements, and service intervals is crucial for maintaining the engine’s performance over time. Regular maintenance and using the correct engine oil will ensure that the K21 engine continues to deliver a smooth and powerful driving experience.
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