Nissan 240SX S13/S14 (1989-1998) - Complete Technical Specifications

Introduction

The Nissan 240SX represents one of the most successful rear-wheel-drive platforms in automotive history, serving as the backbone of drift culture and grassroots motorsport. Sold in North America from 1989 to 1998 across two distinct generations (S13: 1989-1994, S14: 1995-1998), the 240SX shared its chassis with the Japanese-market Silvia but featured the torquey KA24DE 2.4L SOHC engine instead of the turbocharged SR20DET.

With near-perfect 50/50 weight distribution, independent multi-link rear suspension, and lightweight construction (~2,700 lbs), both S13 and S14 generations became legendary platforms for drifting, road racing, and engine swaps. The S13 offered both coupe and hatchback body styles, while the S14 went coupe-only with refined suspension geometry and updated styling.

This complete specifications guide covers both generations in detail, including engine variants, drivetrain configurations, suspension geometry, and the technical foundation that made the 240SX a legend.

Quick Reference Specs

Engine Specifications

KA24DE 2.4L SOHC Inline-4

S13 (1989-1994): Early KA24DE

• Code: KA24DE
• Configuration: Inline-4 SOHC 16-valve
• Displacement: 2,389 cc (2.4L / 145.8 cu in)
• Bore × Stroke: 89.0 mm × 96.0 mm (3.50 in × 3.78 in)
• Compression Ratio: 9.5:1
• Power (Official): 155 hp @ 5,600 rpm
• Power (Actual): 160-165 hp (dyno-verified)
• Torque: 160 lb-ft @ 4,400 rpm
• Redline: 6,500 rpm (fuel cut)
• Valvetrain: SOHC with hydraulic lash adjusters
• Fuel System: Multi-point fuel injection (Nissan ECCS)
• Aspiration: Naturally aspirated
• Block Material: Cast iron
• Head Material: Aluminum

S14 (1995-1998): Revised KA24DE

• Same displacement and configuration as S13
• Updated Features:
  • Revised intake manifold (improved low-end torque)
  • Updated ECU calibration
  • Improved oil pan baffling
  • Revised exhaust manifold routing
• Power/Torque: Identical official ratings (155 hp / 160 lb-ft)
• Real-World: Slightly better low-end response

Notable Engine Features:

• Timing Chain: Maintenance-free (no belt replacement)
• Reliability: 200,000+ mile lifespan with proper maintenance
• Swap Compatibility: Bolt-in SR20DET, RB25DET, 2JZ-GTE swaps
• Tuning Potential: 200-220 hp naturally aspirated (cams, header, tune)

Drivetrain Specifications

Transmission Options

5-Speed Manual (FS5W71C):

• Type: Nissan FS5W71C 5-speed
• Gear Ratios:
  • 1st: 3.321:1
  • 2nd: 1.902:1
  • 3rd: 1.308:1
  • 4th: 1.000:1
  • 5th: 0.759:1 (overdrive)
• Final Drive: 4.083:1 (S13), 4.083:1 or 4.364:1 (S14)
• Synchros: Weak 5th gear synchro (known issue)
• Clutch: Single-disc, hydraulic actuation

4-Speed Automatic (RE4R01A):

• Type: Nissan RE4R01A 4-speed
• Gear Ratios:
  • 1st: 2.785:1
  • 2nd: 1.545:1
  • 3rd: 1.000:1
  • 4th: 0.694:1 (overdrive)
• Torque Converter: Lock-up in 3rd and 4th
• Final Drive: 4.364:1 (all automatics)

Differential

Rear Differential (Viscous Limited-Slip or Open):

• Type: R200 differential (shared with Z32 300ZX)
• Viscous LSD (SE models): Silicone-fluid limited-slip
• Open Diff (Base models): No limited-slip action
• Gear Ratio: 4.083:1 (most manuals), 4.364:1 (autos, some S14s)
• Aftermarket Swaps: Common upgrades to Cusco, Kaaz, or welded diff

Driveshaft:

• Type: Two-piece aluminum with center support bearing
• Length: 1,450 mm (S13), 1,480 mm (S14)

Chassis & Suspension

Front Suspension (MacPherson Strut)

S13 (1989-1994):

• Type: MacPherson strut with coil springs
• Lower Control Arm: Stamped steel A-arm
• Anti-Roll Bar: 24 mm diameter (SE), 22 mm (base)
• Camber Adjustment: Factory adjustable via strut top
• Caster: Fixed at +6.5° (non-adjustable)

S14 (1995-1998):

• Type: MacPherson strut (revised geometry)
• Improvements:
  • Increased caster angle (+7.0°)
  • Revised lower control arm pickup points
  • Stiffer anti-roll bar (26 mm SE)
• Geometry: Better turn-in response, reduced understeer

Rear Suspension (Multi-Link Independent)

S13 (1989-1994):

• Type: Independent multi-link (5-link)
• Links: Upper A-arm, lower A-arm, toe control link, traction link, camber link
• Springs: Coil-over shocks
• Anti-Roll Bar: 16 mm diameter (SE), 14 mm (base)
• Geometry: Excellent compliance, tunable camber/toe

S14 (1995-1998):

• Type: Independent multi-link (revised)
• Improvements:
  • Revised toe control link geometry
  • Increased anti-roll bar diameter (18 mm SE)
  • Better squat control under acceleration
• Drift Tuning: Highly tunable for angle and stability

Brakes

S13 (1989-1994):

• Front: 10.9-inch vented discs, single-piston sliding caliper
• Rear: 10.3-inch solid discs, single-piston sliding caliper
• ABS: Optional on SE models (1991+)
• Master Cylinder: 15/16-inch bore

S14 (1995-1998):

• Front: 11.0-inch vented discs, larger single-piston caliper
• Rear: 10.3-inch solid discs (same as S13)
• ABS: Standard on SE models, optional on base
• Improvements: Better brake feel, improved pad material

Wheels & Tires

S13 Factory Wheels:

• Base: 14×6 steel wheels, 185/70R14 tires
• SE: 15×6 aluminum wheels, 195/60R15 tires
• LE (Hatchback): 15×6.5 aluminum wheels, 205/55R15 tires

S14 Factory Wheels:

• Base: 15×6 steel wheels, 195/60R15 tires
• SE: 16×6.5 aluminum wheels, 205/55R16 tires

Common Upgrades: 17×9 or 18×9.5 wheels with 225-245mm tires

Dimensions & Weight

Body Dimensions

S13 Coupe/Hatchback:

• Length: 176.0 in (4,470 mm)
• Width: 66.7 in (1,694 mm)
• Height: 51.2 in (1,300 mm) - Coupe, 51.8 in - Hatchback
• Wheelbase: 97.4 in (2,474 mm)
• Track (Front): 56.3 in (1,430 mm)
• Track (Rear): 56.1 in (1,425 mm)

S14 Coupe:

• Length: 178.5 in (4,534 mm)
• Width: 67.3 in (1,710 mm)
• Height: 51.6 in (1,311 mm)
• Wheelbase: 99.4 in (2,525 mm) - 50 mm longer than S13
• Track (Front): 57.1 in (1,450 mm)
• Track (Rear): 57.3 in (1,455 mm)

Weight Distribution

S13:

• Curb Weight (Manual): 2,675 lbs (1,213 kg)
• Curb Weight (Auto): 2,750 lbs (1,247 kg)
• Weight Distribution: 53/47 front/rear (near-perfect balance)

S14:

• Curb Weight (Manual): 2,700 lbs (1,225 kg)
• Curb Weight (Auto): 2,800 lbs (1,270 kg)
• Weight Distribution: 54/46 front/rear

Ground Clearance: 5.5 inches (140 mm) stock

Performance Specifications

Acceleration & Top Speed

S13 (5-Speed Manual):

• 0-60 mph: 8.5 seconds
• 0-100 mph: 24.2 seconds
• Quarter Mile: 16.3 seconds @ 85 mph
• Top Speed: 130 mph (electronically limited)

S14 (5-Speed Manual):

• 0-60 mph: 8.4 seconds
• 0-100 mph: 23.8 seconds
• Quarter Mile: 16.2 seconds @ 86 mph
• Top Speed: 130 mph (electronically limited)

Automatic Transmissions: Add ~1.5 seconds to 0-60 times

Handling

Skidpad Lateral Acceleration:

• S13 SE: 0.83g (stock suspension)
• S14 SE: 0.86g (improved geometry)

Slalom Speed:

• S13: 62.5 mph
• S14: 64.1 mph

Braking (60-0 mph):

• S13: 135 feet
• S14: 130 feet (improved ABS calibration)

Fluid Capacities

Engine:

• Oil (with filter): 3.75 quarts (3.5 liters)
• Oil Type: 5W-30 or 10W-30 (API SG or higher)
• Coolant: 6.25 quarts (5.9 liters)
• Coolant Type: Nissan Long-Life or equivalent

Transmission:

• Manual (FS5W71C): 2.38 quarts (2.25 liters) - 75W-90 GL-4
• Automatic (RE4R01A): 8.5 quarts (8.0 liters) - Dexron III ATF

Differential:

• R200 Rear Diff: 1.38 quarts (1.3 liters) - 75W-90 GL-5

Fuel Tank:

• Capacity: 15.9 gallons (60 liters)
• Fuel Type: 87 octane unleaded (minimum)

Power Steering:

• Capacity: 1.0 quart (0.95 liters) - Dexron III ATF

Brake Fluid:

• Capacity: 0.85 quarts (0.8 liters) - DOT 3 or DOT 4

Variant Comparison

S13 Generations (1989-1994)

1989-1990 (First Generation):

• Single overhead cam (SOHC) KA24E engine (140 hp)
• "Pignose" front bumper design
• Pop-up headlights (Coupe and Hatchback)
• Fixed calipers on front brakes

1991-1994 (Facelift):

• Updated to KA24DE engine (155 hp)
• Revised "Chuki" front end (1991-1992)
• Final "Kouki" front end (1993-1994)
• Improved interior materials
• Optional ABS (1991+)

S13 Body Styles:

• Coupe: Fastback roofline, fixed rear window
• Hatchback: Lift-up glass hatch, more cargo space

S14 Generations (1995-1998)

1995-1996 (Zenki/Early Model):

• Rounded front end, projector headlights
• Longer wheelbase (+50 mm vs S13)
• Revised multi-link rear geometry
• Standard dual airbags

1997-1998 (Kouki/Late Model):

• Aggressive "shark mouth" front bumper
• Revised headlight design
• Updated interior with improved gauge cluster
• Enhanced ABS calibration

Common Modifications & Tuning Notes

Engine Swaps (Most Popular):

1. SR20DET: JDM S13/S14 Silvia turbo engine (205-250 hp)
2. RB25DET: Nissan Skyline 2.5L turbo inline-6 (250-300 hp)
3. 1JZ-GTE / 2JZ-GTE: Toyota Supra turbo engines (280-400 hp)
4. LS1 / LS3: Chevrolet V8 swap (350-500 hp)

Chassis Modifications:

• Coilovers: BC Racing, Fortune Auto, Ohlins
• Sway Bars: Whiteline, Cusco, Tanabe
• Subframe Bushings: Energy Suspension polyurethane
• Steering Angle Kit: Wisefab, SPL Parts (for drift)

Brake Upgrades:

• Z32 300ZX Brake Swap: 11.6-inch front, 4-piston calipers
• Q45 / R33 Brake Swap: 12.6-inch front, 4-piston Sumitomo calipers

Technical Notes

Platform Strengths

1. Rear-Wheel Drive: Perfect 50/50 balance, predictable handling
2. Multi-Link Rear: Highly tunable suspension geometry
3. R200 Differential: Strong, swap-compatible with Z32/Skyline
4. Lightweight: Under 2,800 lbs stock, easy to reduce further
5. Engine Swap Friendly: Bolt-in swaps for SR20DET, RB, JZ, LS engines

Known Weaknesses

1. 5th Gear Synchro: Weak in FS5W71C transmission, common failure
2. Rear Subframe Bushings: Tear under hard drifting/launches
3. Viscous LSD: Wears out over time, loses effectiveness
4. Rust: Frame rails, rear quarter panels, hatch area (S13)
5. Timing Chain Tensioner: Can rattle on high-mileage KA24DE engines

Conclusion

The Nissan 240SX S13/S14 represents one of the finest rear-wheel-drive platforms ever built, offering near-perfect weight distribution, independent multi-link suspension, and a robust chassis suitable for everything from daily driving to competitive drifting. While the KA24DE engine is torquey and reliable, the true magic lies in the chassis dynamics—refined over two generations to deliver predictable, tunable handling characteristics.

Whether maintained stock as a reliable daily driver or modified into a 500+ horsepower drift missile, the 240SX platform has proven its versatility across three decades. The S13's lightweight simplicity and the S14's refined geometry both offer unique advantages, explaining why these cars remain highly sought-after in the enthusiast community.

From grassroots drifting to time attack racing, the 240SX/Silvia chassis continues to define what makes a great rear-wheel-drive sports car: balance, simplicity, and endless tuning potential.