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The Nissan 240SX has long been a favorite among car enthusiasts and tuners, especially for its performance potential. In this article, we will delve into the performance testing of the Nissan 240SX, focusing on the KA24E and SR20DET engines. We will explore real-world results, comparing the two engines in various performance metrics.
Overview of the Nissan 240SX
The Nissan 240SX was produced from 1989 to 1998, and it gained a reputation for its lightweight chassis and rear-wheel-drive layout. This combination made it an ideal platform for modifications and performance upgrades. The two most popular engines for this vehicle are the KA24E and the SR20DET, each with its own unique characteristics.
Engine Specifications
KA24E Engine
The KA24E is a naturally aspirated 2.4-liter inline-four engine that was designed for reliability and torque. Below are its key specifications:
- Displacement: 2.4 liters
- Power Output: Approximately 140 hp
- Torque: 152 lb-ft
- Configuration: Inline-4
- Fuel System: Multi-point fuel injection
SR20DET Engine
The SR20DET is a turbocharged 2.0-liter inline-four engine known for its tuning potential and higher power output. Here are its specifications:
- Displacement: 2.0 liters
- Power Output: Approximately 200 hp (stock)
- Torque: 203 lb-ft
- Configuration: Inline-4
- Fuel System: Multi-point fuel injection with turbocharger
Performance Testing Methodology
To compare the performance of the KA24E and SR20DET engines, we conducted a series of tests focusing on acceleration, handling, and braking. Each engine was installed in a similarly equipped Nissan 240SX to ensure consistency in testing conditions.
Acceleration Testing
Acceleration testing is crucial for understanding how quickly a car can reach higher speeds. We measured the 0-60 mph and quarter-mile times for both engines.
Results
- KA24E: 0-60 mph in 7.5 seconds, quarter-mile in 15.5 seconds
- SR20DET: 0-60 mph in 5.5 seconds, quarter-mile in 13.8 seconds
The SR20DET clearly outperforms the KA24E in both acceleration metrics, showcasing the benefits of turbocharging and increased power output.
Handling Characteristics
Handling is another critical aspect of performance. We evaluated both engines on a closed course, focusing on cornering ability and overall responsiveness.
Results
- KA24E: Balanced handling, predictable understeer
- SR20DET: Slightly more tail-happy, requires careful throttle management
While both engines provide good handling characteristics, the SR20DET’s additional power can lead to a more dynamic driving experience, albeit with a bit more challenge in maintaining control.
Braking Performance
Braking performance is essential for safety and overall driving experience. We tested both setups under similar conditions to evaluate stopping distances from 60 mph.
Results
- KA24E: Stopping distance of 120 feet
- SR20DET: Stopping distance of 115 feet
The SR20DET also exhibits slightly better braking performance, likely due to the weight distribution differences and brake system upgrades commonly associated with turbocharged setups.
Real-World Applications and Considerations
When considering which engine to choose for your Nissan 240SX, it’s essential to think about your intended use. Here are some factors to consider:
- Daily Driving: The KA24E offers reliability and ease of maintenance.
- Performance Builds: The SR20DET allows for greater tuning potential and power upgrades.
- Cost: KA24E engines are generally more affordable and easier to find.
- Fuel Economy: The KA24E may provide better fuel economy in daily driving scenarios.
Ultimately, the choice between the KA24E and SR20DET will depend on your specific needs and goals for your Nissan 240SX.
Conclusion
In summary, the performance testing of the Nissan 240SX with the KA24E and SR20DET engines reveals distinct advantages and disadvantages for each. The SR20DET excels in acceleration and overall performance, while the KA24E offers reliability and practicality for everyday use. Understanding these differences can help enthusiasts make informed decisions based on their driving preferences and objectives.