Technical Specifications For The 1995 Nissan 240sx (s14 Zenki)

The 1995 Nissan 240SX, specifically the S14 Zenki model, holds a special place in automotive history. Known for its drift-friendly rear-wheel-drive layout, potential for modification, and overall sporty appeal, the 240SX remains a sought-after vehicle for enthusiasts. This article delves into the technical specifications of the 1995 Nissan 240SX (S14 Zenki) providing detailed information for those looking to learn more, maintain, or modify this iconic car.

Engine Specifications

The heart of the 1995 Nissan 240SX is its engine. Two primary engine options were available, though one was far more common than the other.

KA24DE (Standard Engine)

The most prevalent engine found in the 1995 240SX is the KA24DE. This inline four-cylinder engine is known for its reliability and decent power output for its time.

Type: Inline 4-cylinder, DOHC (Dual Overhead Camshaft)
Displacement: 2.4 liters (2389 cc)
Bore x Stroke: 89.0 mm x 96.0 mm
Compression Ratio: 9.5:1
Fuel Delivery: Electronic Fuel Injection (EFI)
Horsepower: 155 hp (116 kW) @ 5600 rpm
Torque: 160 lb-ft (217 Nm) @ 4400 rpm
Redline: Approximately 6500 rpm

It's important to note that the KA24DE is not a high-revving engine. Its strength lies in its low-end torque, making it suitable for daily driving and mild performance applications. Many owners eventually swap this engine for more powerful alternatives like the SR20DET or even V8 engines.

KA24E (Rare Option)

While significantly less common, a single overhead cam (SOHC) version of the 2.4 liter engine, the KA24E, was also available. This engine produced less power than the KA24DE and is rarely found in the 1995 model year.

Type: Inline 4-cylinder, SOHC (Single Overhead Camshaft)
Displacement: 2.4 liters (2389 cc)
Horsepower: Approximately 140 hp (availability in the 1995 model would be extremely rare)

Due to its lower power output and rarity, the KA24E is generally not the preferred engine for enthusiasts. Verify engine type when purchasing a 1995 240SX. It is highly likely to have been swapped.

Transmission Specifications

The 1995 Nissan 240SX came with a choice of two transmissions:

5-Speed Manual Transmission: A popular choice for enthusiasts, the 5-speed manual provided a direct and engaging driving experience. Gear ratios varied slightly depending on the final drive ratio.
4-Speed Automatic Transmission: Offered for those seeking a more relaxed driving experience, the 4-speed automatic was less performance-oriented but provided ease of use.

The 5-speed manual transmission (FS5W71C) is known for being relatively robust, but like any older transmission, it can be prone to wear and tear. Common issues include worn synchros and a notchy shifter feel. Many owners choose to upgrade the shifter with aftermarket short-throw shifters.

Chassis and Suspension Specifications

The 240SX's chassis is a key component of its appeal. Its rear-wheel-drive configuration and well-balanced design make it a favorite for drifting and other forms of motorsport.

Layout: Front-engine, Rear-wheel-drive (FR)
Front Suspension: Independent MacPherson struts with coil springs and stabilizer bar.
Rear Suspension: Independent Multi-link with coil springs and stabilizer bar.
Steering: Power-assisted rack and pinion.
Brakes: Power-assisted disc brakes on all four wheels.

The multi-link rear suspension is a significant factor in the 240SX's handling characteristics. It allows for independent control of each wheel, providing good grip and stability. However, the rear suspension bushings are a common wear item and should be inspected regularly. Upgrading to aftermarket bushings can significantly improve handling.

The front suspension also plays a crucial role. The MacPherson strut design is relatively simple and effective, but aftermarket coilovers are a popular upgrade for improved handling and adjustability. The standard sway bars are sufficient for street use, but thicker aftermarket sway bars can further reduce body roll during cornering.

Dimensions and Weight

Understanding the 240SX's dimensions and weight is helpful for various purposes, including transportation, storage, and performance calculations.

Wheelbase: 99.4 inches (2525 mm)
Length: 178.0 inches (4521 mm)
Width: 68.9 inches (1750 mm)
Height: 50.6 inches (1285 mm)
Curb Weight: Approximately 2700-2800 lbs (1225-1270 kg) - varies slightly depending on options and transmission.

The 240SX's relatively low curb weight contributes to its nimble handling and responsive feel. This makes it a good platform for performance modifications, as even modest power increases can significantly improve acceleration.

Exterior and Interior Features

The 1995 Nissan 240SX Zenki is characterized by its distinctive styling. The "Zenki" designation refers to the earlier style of the S14 chassis, which features a different front fascia compared to the later "Kouki" models.

Exterior Features:

Headlights: Rectangular headlights with a separate turn signal lens.
Taillights: Horizontal taillights that wrap around the rear corners.
Body Styles: Coupe.
Wheels: Typically equipped with 15-inch alloy wheels.

Interior Features:

Seats: Cloth seats with adjustable headrests. Leather options were available.
Dashboard: Simple and functional dashboard layout.
Gauges: Analog gauges for speedometer, tachometer, fuel level, and coolant temperature.
Features: Air conditioning, power windows, power locks, and a stereo system.

While the interior is relatively basic by modern standards, it's functional and provides a good driving environment. Many owners upgrade the interior with aftermarket seats, steering wheels, and audio systems.

Braking System

The braking system of the 1995 Nissan 240SX is adequate for stock power levels, but upgrades are often recommended for those planning on increasing performance.

Front Brakes: Disc brakes with single-piston calipers.
Rear Brakes: Disc brakes with single-piston calipers.
Anti-lock Braking System (ABS): Available as an option.

Upgrading the brake pads, rotors, and calipers can significantly improve braking performance. Stainless steel brake lines are also a popular upgrade, as they reduce brake fade and provide a firmer pedal feel. Consider larger brake kits for significantly increased performance.

Fuel System

The fuel system delivers fuel to the engine through electronic fuel injection.

Fuel Tank Capacity: 15.9 gallons (60 liters).
Fuel Delivery: Electronic Fuel Injection (EFI).
Fuel Pump: Electric in-tank fuel pump.

For those planning on increasing engine power, upgrading the fuel pump and injectors may be necessary to ensure adequate fuel delivery. A larger fuel pump can provide a higher flow rate, while larger injectors can deliver more fuel to the engine. Always consult with a qualified mechanic or tuner before making any modifications to the fuel system.

Electrical System

The electrical system of the 1995 Nissan 240SX is relatively straightforward.

Battery: 12-volt battery.
Alternator: Provides electrical power to the vehicle and charges the battery.
Wiring: Standard automotive wiring.

Due to the age of these vehicles, it's common for electrical issues to arise. Inspecting the wiring harness for damage or corrosion is essential. Replacing old or worn-out wiring can improve reliability and prevent electrical problems.

Common Problems and Considerations

Owning a 1995 Nissan 240SX comes with its own set of potential challenges, primarily due to the age of the vehicle. Here are some common problems and considerations:

Rust: Rust is a significant concern, especially in areas with harsh winters or high humidity. Thoroughly inspect the body, undercarriage, and suspension components for rust before purchasing a 240SX.
Worn Suspension Components: The suspension bushings, ball joints, and shocks are likely to be worn out after all these years. Replacing these components can significantly improve handling and ride quality.
Engine Maintenance: Regular maintenance is crucial for keeping the KA24DE engine running smoothly. This includes oil changes, spark plug replacements, and timing chain maintenance.
Modified Vehicles: Many 240SXs have been heavily modified, so it's essential to thoroughly inspect any potential purchase. Look for signs of poor workmanship or questionable modifications.

Tip: A pre-purchase inspection by a qualified mechanic is highly recommended before buying a 1995 Nissan 240SX. This can help identify potential problems and prevent costly repairs down the road.

Conclusion

The 1995 Nissan 240SX (S14 Zenki) is a legendary sports car with a dedicated following. Its rear-wheel-drive layout, potential for modification, and overall sporty appeal make it a desirable vehicle for enthusiasts. By understanding the technical specifications and common problems associated with this model, you can make an informed decision and enjoy owning this iconic car.

Always consult with a qualified mechanic or tuner before making any modifications to your vehicle.