Nissan 240NX (S13/S14): legendary sports car with drift potential

If you are looking for a compact, dynamic and stylish sports car with rich tuning potential, then Nissan 240NX (also known as Silvia S13/S14) is one of the best candidates. Launched in the late 1980s and early 1990s, this model has become a cult classic for its perfect balance of power, handling and modifiability. In Japan it was sold as Nissan Silvia, in the USA - as 240SX, and in Europe - like 200SX, but it’s the modification with the engine SR20DET (in version 240NX) brought her worldwide fame.

The secret of popularity 240NX lies in its rear-wheel drive platform, lightweight body and turbocharged engine, which is easy to tune. The car has become a favorite of drifters, street racers and simply connoisseurs of Japanese engineering. However, the model also has weak points - from corrosion problems to suspension features that you should know about before purchasing. In this guide we will look at all the key aspects: from the history of creation to tips for selection and upgrading.

Model history: from Silvia S13 to 240NX

Debut Nissan Silvia S13 took place in 1988, and even then the car stood out among its competitors. Unlike previous generations, S13 got a completely new platform S-platform, which formed the basis for many other models Nissan, including 180SX And 200SX. In the USA the car was sold as 240SX (with naturally aspirated engine KA24E), and in Japan - as Silvia with turbocharged CA18DET (later - SR20DET).

In 1991, the second generation appeared - S14, which has become more streamlined in appearance and technically more advanced. Exactly S14 with motor SR20DET (205 hp in stock) was named 240NX in some markets. Interestingly, in Europe the model was sold as 200SX with less powerful SR20DE (150 hp), and in Japan - with all-wheel drive (Silvia K’s Autech). Production S14 ended in 1999, giving way to S15, which was no longer exported outside of Japan.

• 📅 1988–1990: Nissan Silvia S13 (coupe and hatchback), engines CA18DET (Japan) and KA24E (USA).
• 📅 1991–1994: Silvia S14 (coupe only), debut SR20DET and systems HICAS (steering rear wheels).
• 📅 1994–1999: Silvia S14a (restyling), improved aerodynamics and interior.
• 📅 1999: release S15, but 240NX/S14 remains a legend thanks to drift culture.

Unique Fact: The Nissan 240NX (S14) was the first production car to feature HICAS, which improved handling at high speeds but was often disabled by enthusiasts due to difficulty in tuning.

Technical specifications: engines and transmission

With my heart 240NX in the version for Japan and some export markets it became turbocharged SR20DET - 2.0-liter inline-four engine with intercooler, developing 205 hp (in stock). A version with atmospheric air was sold in the USA KA24E (155 hp), which later replaced KA24DE (160 hp). The transmission was offered to choose from: a 5-speed manual or a 4-speed automatic (a rarity for sports cars of that time).

Key Features SR20DET:

• 🔥 Turbocharging: Garrett T25 (in later versions - T28), boost pressure ~0.7 bar.
• 🛠️ Block head: 16 valves, variable valve timing system Nissan N-VCT (on later models).
• ⚡ Electronics: injection system ECU with a rev limiter at 7000 rpm (can be removed by chip tuning).
• ⚠️ Weaknesses: oil burns on runs >150 thousand km, problems with the turbine after 200 thousand km.

Parameter	SR20DET (Japan)	KA24DE (USA)	CA18DET (S13)
Volume, l	2.0	2.4	1.8
Power, hp	205	160	175
Torque, Nm	274	210	231
Turbine	Garrett T25/T28	—	Garrett T25
Fuel consumption, l/100 km	10–12	9–11	9–11

Transmission 240NX deserves special attention. Mechanical box FS5R30A (for SR20DET) is famous for its reliability, but has a weak point - synchronizers for 1-2 gears, which wear out during aggressive driving. Automatic transmission 4L60E (in the US) is less popular among enthusiasts due to loss in dynamics. Differential VLSD (viscus-lock) was installed on most versions, but many owners replace it with Cusco or Nismo for drifting.

Weaknesses and typical problems

Despite its legendary status, Nissan 240NX has a number of “diseases” that every potential owner should know about. The main problem is corrosion. Body S13/S14 is prone to rust in the following areas:

• 🚗 Thresholds - rot from the inside, often requiring complete replacement.
• 🚗 Wings - especially in places of attachment to the body.
• 🚗 Bottom — check the side members and suspension mounting points.
• 🚗 trunk - y S13 hatchback The rear arch often rusts.

Another common problem is HICAS system (steering rear wheels). It adds complexity to suspension tuning and often fails. Many owners simply disconnect it physically by removing the hydraulic pump and control unit. It is also worth paying attention to:

• ⚠️ Turbine: original resource Garrett T25 - about 150–200 thousand km.
• ⚠️ Gearbox: 1st and 2nd gear synchronizers wear out when drifting.
• ⚠️ Suspension: bushings and silent blocks require replacement every 50–80 thousand km.
• ⚠️ Electrician: oxidation of contacts in the fuse box and problems with sensors.

⚠️ Attention: Upon purchase Nissan 240NX Be sure to check the turbine's repair history. If the previous owner operated the car with a faulty intercooler or oil lines, the engine could suffer oil starvation, which leads to a major overhaul.

How to check HICAS before purchasing?

If you hear a hum or knock from the rear when turning the steering wheel in place, and uneven wear on the rear tires is observed, the HICAS system is faulty. Often the problem lies in the hydraulic pump or control unit. Many owners remove the system completely, as it complicates suspension tuning and rarely provides any real benefit on the track.

Tuning potential: from stock to 500+ hp.

Nissan 240NX — one of the most “tuning-resistant” cars in the world. Even stock SR20DET can be achieved without much effort 300–350 hp using a firmware chip, a downpipe and an enlarged turbine. More serious modifications include:

• 🔧 Level 1 (300–350 hp):
  • Firmware ECU (For example, Power FC or Haltech).
  • 3" downpipe and straight exhaust system.
  • Larger intercooler (eg. GReddy).
  • Fuel pump Walbro 255 l/h.
• 🔥 Level 2 (400–500 hp):
  • Turbine Garrett GT2860 or Tomei M82.
  • Injectors Nismo 550cc or ID1000.
  • Increased grip (eg. Spec Stage 3).
  • Forged pistons and connecting rods (for reliability at high speeds).

The following suspension modifications are popular for drifting:

• 🏁 Springs/shock absorbers: Tein Flex Z or BC Racing BR.
• 🏁 Stabilizers: Cusco or Nismo (hardness 22–25 mm).
• 🏁 Steering: Nismo quick rack (reduces the gear ratio).
• 🏁 Differential: Cusco 1.5-way LSD for drifting or Nismo 2-way for the track.

⚠️ Attention: When tuning SR20DET up to 400+ hp be sure to strengthen the gearbox! Stock FS5R30A withstands up to 350 hp, but for higher loads installation is required PPG or OS Giken transmissions.

How to choose a Nissan 240NX: buyer tips

Upon purchase Nissan 240NX It is important to consider several key factors. First, decide on the body: S13 cheaper and easier to repair, but S14 has a more modern suspension and interior. Secondly, check the history of the car - many examples have been in an accident or used for drifting, which affects the life of the body and transmission.

Please note the following points:

• 🔍 Engine:
  • Check the compression (should be at least 12 bar in all cylinders).
  • Inspect the turbine for play and oil in the intercooler.
  • Listen to the engine running when cold (knocks may indicate wear on the connecting rod bearings).
• 🔍 Body:
  • Use a thickness gauge to check the sills and side members.
  • Pay attention to the weld marks under the door and trunk seals.
• 🔍 Suspension and transmission:
  • Check the play in the ball joints and silent blocks.
  • Make sure the differential does not lock spontaneously (stock problem) VLSD).

Cost 240NX varies depending on condition and modifications:

• 💰 Stock copy (S13): $8 000–$15 000.
• 💰 Stock copy (S14): $12 000–$20 000.
• 💰 Tuned car (300–400 hp): $20 000–$40 000.
• 💰 Restored collector's item: $50 000+.

Operation and Maintenance: What You Need to Know

Service Nissan 240NX It’s not particularly complicated, but it has its own nuances. For example, SR20DET requires high-quality oil (recommended 5W-40 or 10W-40 with permission API SN) and regular replacement every 5–7 thousand km with aggressive driving. The turbine is sensitive to oil starvation, so it is important to monitor the oil level and the condition of the oil lines.

Recommended maintenance schedule:

Component	Replacement interval	Recommendations
Oil and filter	5,000–7,000 km	Use synthetics, check the level every 1,000 km.
Air filter	15,000 km	When driving on dusty roads - every 10,000 km.
Fuel filter	30,000 km	Replacement is required when tuning the fuel system.
Spark plugs	20,000 km	For turbo engines - NGK BCP7ES or Denso IK20.
Timing belt	80,000–100,000 km	On SR20DET When the valve breaks, it bends!

Suspension 240NX requires attention to the following elements:

• 🔧 Suspension bushings: replace every 50–80 thousand km (especially rear ones).
• 🔧 Silent blocks of levers: wear out faster when drifting.
• 🔧 Wheel bearings: check for play every 30 thousand km.
• 🔧 Brake pads/discs: with aggressive driving, they last 15–20 thousand km.

⚠️ Attention: If your 240NX equipped with a system HICAS, but you do not plan to use it, it is recommended to physically turn off the hydraulic pump and plug the lines. This will prevent fluid leaks and simplify further suspension tuning.

Modifications and special versions

Over the years of production Nissan 240NX released several special editions that are collector's items today. The most famous of them:

• 🏆 Silvia K’s (S13/S14):
  • Options with all-wheel drive (AWD), released only for the Japanese market.
  • Engine SR20DET with the system 4WS (rear wheel steering).
  • Rarity: today the value reaches $30,000–$50,000.
• 🏆 240SX SE (USA, 1992–1994):
  • It featured a leather interior, a sunroof and improved sound insulation.
  • Engine KA24DE (160 hp), but with a more “luxurious” finish.
• 🏆 Silvia 20th Anniversary (S14, 1994):
  • Limited edition for the 20th anniversary of the model, coloring Midnight Purple.
  • Improved suspension and red interior.
• 🏆 Autech Version (S13/S14):
  • Tuned version from a subsidiary Nissan Autech.
  • Power SR20DET increased to 220–230 hp, improved braking system.

The version stands apart 180SX (based on S13), which featured a hatchback body and was often equipped with a motor CA18DET. Also released in Japan Silvia Q’s - a luxury version with an automatic transmission and leather interior, but today it is less in demand among enthusiasts.

FAQ: answers to frequently asked questions

Which engine is better for tuning: SR20DET or CA18DET?

SR20DET has greater tuning potential thanks to a stronger block and better head. It easily handles 400+ HP. when assembled correctly, whereas CA18DET limited to ~300 hp without major modifications. However CA18DET lighter and has a more responsive turbo at low revs, which is appreciated in drifting.

Is it possible to put a Nissan Skyline engine (RB25DET) in a 240NX?

Yes, this is a popular swap, but it will require significant improvements:

• Replacement of subframe and engine mounts.
• Modification of the exhaust system and fuel line.
• Adaptation ECU (For example, Haltech Elite or Link G4+).
• Strengthening the gearbox (stock) FS5R30A will not withstand torque RB25DET).

The cost of the swap is from $8,000 to $15,000, depending on the configuration.

What is the most reliable transmission for the 240NX?

Stock FS5R30A withstands up to 350 hp, but for greater power the following are recommended:

• PPG Sequential — sequential gearbox, can withstand up to 600 hp, but expensive (~$6,000).
• OS Giken Super Lock — reinforced differential and gears, price ~$3,500.
• Nismo Coppermix — synchronizers made of copper alloy, improved stock box.

A box from Nissan 350Z (CD009), but requires adaptation.

How to deal with corrosion on 240NX?

Key steps:

1. Remove rust mechanically (sandblasting or grinder).
2. Treat the affected areas with a rust converter (for example, Fertan).
3. Apply an anti-corrosion coating (eg Dinitrol or Waxoyl).
4. For serious damage, cut out the rusty areas and weld new panels.

Prevention: wash your car regularly in winter and treat the bottom with anti-gravel.

Where is the best place to buy parts for 240NX?

Main sources:

• Japan: Yahoo! Auctions Japan, RHDJapan - original and used parts.
• USA: Enjuku Racing, Z1 Motorsports — tuning kits and spare parts.
• Europe: Driftworks, Nengun Performance — suspension and brakes.
• Russia/CIS: groups in VKontakte (for example, "Nissan Silvia Club"), Avito.

For rare parts (for example, HICAS or Autech) contact Japanese dealers.