Technical Specifications And Features Of The 1992 Nissan 240sx (s13)

The 1992 Nissan 240SX, part of the S13 chassis generation, occupies a special place in automotive history, especially within the drifting and tuning communities. Its popularity stems not just from its aesthetics, but also from its well-engineered design and inherent performance potential. This article delves into the technical specifications and features of the '92 240SX, providing an analytical look at what made this car a legend.

Engine Options: The Heart of the Matter

The most significant technical aspect of the 240SX is, of course, its engine. In 1992, North American models were exclusively equipped with the KA24DE engine. It's crucial to differentiate this from the earlier KA24E (single overhead cam) found in the S13's first year. The KA24DE is a 2.4-liter (2389cc) inline-four cylinder engine featuring dual overhead camshafts (DOHC) and four valves per cylinder. This configuration allowed for improved breathing and higher RPM potential compared to its SOHC predecessor.

KA24DE Technical Details:

Here's a closer look at the KA24DE's key technical specifications:

Type: Inline-four, DOHC, 16-valve
Bore x Stroke: 89mm x 96mm
Compression Ratio: 9.5:1
Fuel Delivery: Electronic Fuel Injection (EFI)
Rated Output: 155 horsepower (116 kW) @ 5600 rpm
Rated Torque: 160 lb-ft (217 Nm) @ 4400 rpm

Analyzing these figures reveals a relatively long stroke engine. This design characteristic contributes to the engine's strong low-end torque, a desirable trait for drifting and spirited street driving. The 9.5:1 compression ratio allows for decent power output on standard pump gasoline while avoiding excessive strain on engine components.

The EFI system utilizes sensors to monitor various engine parameters (air intake, coolant temperature, throttle position, etc.) and adjust fuel delivery accordingly, optimizing performance and fuel efficiency. While not as sophisticated as modern systems, it was a significant advancement at the time.

Drivetrain: Power to the Pavement

The 1992 240SX was available with two transmission options:

5-speed manual (FS5W71C)
4-speed automatic (RE4R01A)

The 5-speed manual is the preferred choice for enthusiasts due to its greater control and direct connection to the engine. The FS5W71C is a reasonably robust transmission capable of handling increased power with proper maintenance. However, its synchros, particularly in 2nd and 3rd gear, are known weak points when subjected to aggressive shifting.

The 4-speed automatic, while offering convenience, significantly impacts performance. The torque converter absorbs some engine power, and the fewer gear ratios limit acceleration and overall driving enjoyment. However, the automatic transmission is also surprisingly robust and, with proper maintenance, can last for many miles. The final drive ratio also varies depending on whether the car is equipped with manual or automatic transmission. Manual transmission cars typically had a slightly shorter final drive, further enhancing acceleration.

All 1992 240SX models were rear-wheel drive (RWD), a crucial factor in their appeal to driving enthusiasts. This configuration allows for predictable handling and enables techniques like drifting, which have contributed significantly to the car's iconic status.

Suspension and Chassis: The Foundation of Handling

The S13 chassis utilizes a fully independent suspension system, a key contributor to its balanced handling characteristics. This design allows each wheel to react independently to road imperfections, resulting in better ride quality and improved grip.

Suspension Components:

Front: MacPherson strut with lower control arm and stabilizer bar.
Rear: Multi-link with coil springs, telescopic shock absorbers, and stabilizer bar.

The MacPherson strut design in the front is a relatively simple and cost-effective solution, providing good performance for its simplicity. The multi-link rear suspension is more complex, offering greater adjustability and allowing engineers to fine-tune the car's handling characteristics. This design helps maintain proper wheel alignment during suspension travel, maximizing tire contact with the road.

The stabilizer bars (anti-roll bars) play a crucial role in reducing body roll during cornering, improving handling and stability. The diameter and stiffness of these bars influence the car's understeer/oversteer balance.

Brakes: Bringing it to a Halt

The 1992 240SX came equipped with disc brakes on all four wheels, providing adequate stopping power for its performance level.

Front: Vented disc brakes
Rear: Solid disc brakes

Vented front discs offer better heat dissipation compared to solid discs, preventing brake fade during repeated hard braking. Some models were equipped with an anti-lock braking system (ABS) as an option. ABS prevents wheel lockup during emergency braking, allowing the driver to maintain steering control. While rudimentary by modern standards, it was a valuable safety feature at the time.

Steering: Connecting the Driver to the Road

The 240SX utilizes a rack-and-pinion steering system, providing a direct and responsive feel. Power steering was standard, reducing steering effort at low speeds and improving maneuverability. The steering ratio is relatively quick, contributing to the car's nimble handling.

Dimensions and Weight: A Balanced Package

The S13's compact dimensions and relatively low weight are crucial to its agile handling. Here are some key figures:

Wheelbase: 97.4 inches (2474 mm)
Length: 176.2 inches (4476 mm) (Fastback), 178.1 inches (4524 mm) (Coupe)
Width: 66.7 inches (1694 mm)
Height: 50.6 inches (1285 mm)
Curb Weight: Approximately 2700-2800 lbs (1225-1270 kg) (varies depending on trim level and options)

The relatively short wheelbase contributes to the car's quick turning response. The low weight helps improve acceleration, braking, and overall handling. The coupe and fastback models have slightly different lengths, primarily due to the rear styling differences.

Interior and Electronics: Creature Comforts and Essential Systems

The interior of the 1992 240SX is functional and driver-focused, with a straightforward dashboard layout and analog gauges. Features varied depending on trim level, with options including air conditioning, power windows, power locks, and a sunroof. The electronics are relatively simple, consisting of the engine management system, lighting, and basic accessories.

Conclusion: A Timeless Classic

The 1992 Nissan 240SX is more than just an old car; it's a well-engineered machine that offers a compelling driving experience. Its combination of a robust engine, RWD layout, independent suspension, and balanced dimensions make it a versatile platform for various applications, from daily driving to competitive motorsports. While its age means that finding a well-maintained example can be challenging, its enduring popularity and strong aftermarket support ensure that the 240SX will continue to be a beloved car for years to come. The KA24DE, though not the most powerful engine in the world, provides a reliable and torquey base for modification and performance enhancement. Understanding the technical specifications and features outlined above is crucial for anyone considering owning, maintaining, or modifying a 1992 Nissan 240SX.