Nissan S14 Engine Specifications
The Nissan S14, part of the Nissan Silvia series, is renowned for its performance and tuning potential. The engine specifications of the S14 vary depending on the model year and market, but the most notable engine options include the SR20DET and SR20DE. Below is a detailed overview of these engines.
Engine Specifications Chart
| Specification | SR20DET | SR20DE |
|---|---|---|
| Engine Type | Inline-4 Turbocharged | Inline-4 Naturally Aspirated |
| Displacement | 2.0 L (SR20DET) | 2.0 L (SR20DE) |
| Bore x Stroke | 86.0 mm x 86.0 mm | 86.0 mm x 86.0 mm |
| Compression Ratio | 8.5:1 | 9.5:1 |
| Power Output | 205 hp (152 kW) @ 6,000 rpm | 140 hp (104 kW) @ 6,000 rpm |
| Torque | 203 lb-ft (275 Nm) @ 4,000 rpm | 133 lb-ft (180 Nm) @ 4,800 rpm |
| Fuel System | Electronic Fuel Injection | Electronic Fuel Injection |
| Turbocharger | T25 Turbo | None |
The SR20DET engine is particularly favored for its turbocharged performance, while the SR20DE offers a reliable and efficient naturally aspirated option.
Engine Configuration
The Nissan S14’s engine configuration plays a significant role in its performance characteristics.
Key Features of the Engine Configuration
- Inline-4 Layout: This configuration allows for a compact design, contributing to a lower center of gravity and improved handling.
- DOHC Design: The dual overhead camshaft (DOHC) setup enhances airflow and allows for higher RPMs, improving performance.
- Variable Valve Timing: Some variants feature Nissan’s VTC (Variable Timing Control), optimizing performance across different RPM ranges.
- Turbocharged Option: The SR20DET includes a turbocharger, significantly boosting power output and torque, making it a popular choice among tuners.
The combination of these features makes the S14 a versatile platform for both daily driving and motorsport applications.
Engine Oil Specifications
Proper engine oil is crucial for maintaining the health and performance of the Nissan S14’s engine.
Recommended Engine Oil Types
- Viscosity: 10W-30 or 10W-40 is commonly recommended for both SR20DET and SR20DE engines.
- Oil Type: Synthetic oil is preferred for its superior performance in high-temperature conditions.
- API Rating: Look for oils with an API rating of SM or higher for optimal protection.
Oil Capacity
The oil capacity for the SR20DET and SR20DE engines is approximately 4.5 quarts (4.3 liters) with a filter change.
Service Intervals
Regular maintenance is essential for the longevity of the Nissan S14’s engine.
Recommended Service Intervals
- Oil Change: Every 3,000 to 5,000 miles (4,800 to 8,000 km) or every 6 months, whichever comes first.
- 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 30,000 miles (48,000 km) for standard plugs; 60,000 miles (96,000 km) for iridium plugs.
- Timing Belt Replacement: Every 60,000 miles (96,000 km) for the SR20DE; the SR20DET uses a timing chain, which typically requires less frequent replacement.
Following these service intervals will help ensure that the engine remains in optimal condition, providing reliable performance for years to come.
Conclusion
The Nissan S14, with its robust engine options and solid engineering, remains a favorite among car enthusiasts and tuners. Understanding the engine specifications, configuration, oil requirements, and service intervals is essential for maintaining the performance and longevity of this iconic vehicle. Whether you are a daily driver or a motorsport enthusiast, proper care and attention to the S14’s engine will ensure an enjoyable driving experience.
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