Nissan Skyline R31 is an iconic car from the 1980s that is still of interest to collectors and tuners. This body, released in 1985, became a bridge between the classic "round" Skyline 20 series and futuristic R32 models. Unlike its predecessors, R31 received a completely new platform, independent rear suspension and turbocharged engines that made it a real sports car.

Today Skyline 31 body valued not only for its historical value, but also for its potential for modification. However, owning such a car requires knowledge: from the features RB20 engines And CA18 to typical electrical and body problems. In this guide, we'll cover everything you need to know about Nissan Skyline R31 - from technical specifications to advice on repairs and tuning.

Technical characteristics of Nissan Skyline R31

Model range Skyline R31 included several modifications, differing in engines, drives and equipment levels. Basic versions were equipped with naturally aspirated engines, and top versions were equipped with turbocharged units with a NICS (Nissan Induction Control System). Below are the key parameters:

  • 🔧 Engines: RB20E (2.0 l, 130 hp), RB20ET (2.0 l, 180 hp), RB20DET (2.0 l, 210 hp), CA18ET (1.8 l, 130 hp), LD28 (2.8 l diesel, 95 hp)
  • 🚗 Drive: rear (FR) or full (ATTESA E-TS in modification GTS-R)
  • ⚙️ Gearboxes: 5-speed manual transmission, 4-speed automatic
  • 📏 Dimensions: 4685×1690×1340 mm (sedan), wheelbase - 2615 mm

The system deserves special attention ATTESA E-TS (Advanced Total Traction Engineering System for All-Terrain), which debuted precisely on R31. This is a prototype of the future legendary transmission Skyline GT-R, although in the 31st body it was less perfect and only worked in mode 4WD Auto without manual differential locking.

Modification Engine Power (hp) Drive Features
GTS RB20E 130 FR Basic version with naturally aspirated engine
GTS-X RB20ET 180 FR Turbocharged engine, disc brakes on all wheels
GTS-R RB20DET 210 ATTESA All-wheel drive, limited edition (about 800 copies)
RS-X CA18ET 130 FR Lightweight body, sports suspension

Important: The GTS-R modification with the RB20DET engine and ATTESA all-wheel drive is the rarest and most valuable version of the R31, released only for the Japanese market in 1987-1988. These machines today are valued at 2–3 times more expensive than standard ones Skyline of the same generation.

📊Which R31 engine do you think is the most promising for tuning?
  • RB20ET
  • RB20DET
  • CA18ET
  • Other

Weaknesses and typical problems

Despite its legendary status, Nissan Skyline R31 has a number of “diseases” that every potential owner should know about. Many problems are related to age of the car (more than 30 years) and the specifics of Japanese engineering of the 1980s.

In first place - body corrosion. Particularly vulnerable:

  • 🚗 Thresholds and wheel arches — rust from the inside, often requiring complete replacement of the metal.
  • 🔩 Rear suspension mounts - rot due to the accumulation of dirt and moisture.
  • 🚪 Doors and trunk lid - Problems with drainage holes lead to water accumulation.

The second large group of problems is electrical and electronics. U R31 often fail:

  • 💡 Generator and relay regulator - lead to undercharging of the battery.
  • 🔌 Wiring harnesses — rub against the body, especially in the area of the pedal assembly.
  • 📡 ECU — sensitive to voltage surges, may require flashing.
⚠️ Attention: Upon purchase Skyline R31 be sure to check the condition fuel tank - in old cars it often rusts from the inside, which leads to clogging of the fuel system. Replacing the tank with a new one will cost 150–200 thousand rubles.

The third problem is RB series engines. Despite their reliability, they require regular maintenance:

  • 🛢️ Oil fasting — due to the design of the oil pump, a temporary drop in pressure may occur during sharp turns.
  • 🔥 Overheating — the thermostat and radiator often become clogged, especially if the car was operated with low-quality antifreeze.
  • 💨 Turbine - in RB20ET/DET The service life of a turbocharger rarely exceeds 150 thousand km without repair.
What to do if the R31 does not start?

If the engine does not start, check:

1. Presence of a spark (problems with the ignition coil or distributor).

2. Fuel pressure (faulty fuel pump or clogged injectors).

3. Condition of the crankshaft position sensor - its failure blocks the start.

Often the problem lies in oxidized contacts of the ECU or main power relay.

R31 engines: which one to choose for tuning?

Engine selection for Skyline R31 depends on the goals: whether it is restoring an original car or creating a project car. Let's look at the main options:

1. RB20ET (180 hp) — the most balanced choice for daily use and moderate tuning. This motor easily tolerates an increase in power up to 250–300 hp with minimal modifications:

  • 🔧 Replacing the turbine with Garrett T28 or T3.
  • 💨 Installation of intercooler and direct exhaust.
  • 📈 Reflashing the ECU (for example, Haltech or Nistune).

2. RB20DET (210 hp) — top version with factory turbine T25 and a more durable block. Potential - up to 400+ hp, but requires strengthening:

  • 🔩 Installation of forged pistons and connecting rods.
  • 🛡️ Replacing the block head with RB25 (to increase volume).
  • 💰 Budget for serious tuning - from 500 thousand rubles.

3. CA18ET (130 hp) — light and resourceful, but less reliable. Suitable for drifting or street racing:

  • ⚡ Easily unwinds to 8000 rpm.
  • 🔥 Requires frequent replacement of the timing belt (resource - 60 thousand km).
  • 💣 When the belt breaks, the valve bends.

4. Diesel LD28 - a rare option, interesting only to collectors. There is practically no tuning potential, but the engine is extremely durable (resource - 500+ thousand km).

☑️ What to check before buying an RB motor?

Done: 0 / 4

Tuning and modifications: from cosmetics to serious modifications

Tuning Nissan Skyline R31 can be divided into three areas: external, technical And interior. Let's look at each in detail.

External tuning often begins with body restoration. Popular improvements:

  • 🎨 Repainting in original colors (For example, Dark Gray Metallic (732) or Wine Red (AH3)).
  • 🚘 Installation of body kits from Mine's or Tommy Kaira.
  • 💡 LED optics (legal only within the limits STS for classic cars).
  • 🌀 Wheels - classic: Work Equip 03 or SSR Longchamp XR-4.

Technical tuning depends on the engine. For RB20DET typical improvements:

  • 🔥 Turbo kit based on Garrett GT2860 (+100–150 hp).
  • 🛢️ Fuel system: pump Walbro 255 l/h, injectors Nismo 550cc.
  • 📊 Standard ECU replaced by Haltech Elite or AEM Infinity.

For pendants popular:

  • 🔧 Coilovers (Tein Super Street or HKS Hipermax).
  • 🛑 Brakes: calipers R32 GT-R + disks 300 mm.
  • 🔄 Differential increased friction (Nismo 1.5-way LSD).
⚠️ Attention: When installing turbo kits with power over 300 hp on RB20DET be sure to strengthen the gearbox! The stock manual transmission can handle up to 280–300 hp, after which problems with synchronizers and the output shaft begin.

Interior tuning usually comes down to:

  • 🪑 Replacing seats with Recaro SRD or Bride Zeta III.
  • 🎛️ Installing a sports steering wheel (Nardi or Momo).
  • 🔊 Audio system (for example, Pioneer DEH-X9700BT + speakers Focal).
💡

When tuning your R31, keep the original wiring! Many problems with sensors (for example, AFM or CAS) arise due to incorrect connection after modifications.

Operation and maintenance: tips for owners

Service Nissan Skyline R31 has its own nuances. Here are the key recommendations:

1. Oil and filters:

  • 🛢️ For RB20ET/DET use oil 5W-40 or 10W-40 (For example, Motul 8100 X-Cess).
  • 🔧 Change the oil every 5 thousand km — turbocharged engines are sensitive to the quality of lubricant.
  • 🧻 Oil filter: original Nissan 15208-65F00 or equivalent Mann W719/30.

2. Cooling:

  • 💧 Antifreeze - only G12+ or G13 (For example, CoolStream Premium).
  • 🔄 Flush the cooling system every 2 years (use Liqui Moly Kuhler-Reiniger).
  • ❄️ The radiator fan often fails - check its operation when you turn on the air conditioner.

3. Fuel system:

  • ⛽ Gasoline - only AI-98 (critical for turbo engines!).
  • 🔧 Clean injectors every 30 thousand km (ultrasound or Liqui Moly Injection Reiniger).
  • 🛢️ Fuel filter - replace once every 15 thousand km.

4. Brakes and suspension:

  • 🛑 Brake fluid - DOT 4 (For example, Castrol React DOT4), replacement every 2 years.
  • 🔧 Wheel bearings - check every 20 thousand km (symptom: hum at speed 80+ km/h).
  • 🌀 Shock absorbers are original (Kayaba) serve until 80 thousand km, but it’s better to change to 60 thousand km.
💡

Regularly check the oil level in the transfer case (if there is an ATTESA) - its failure will cost 100+ thousand rubles.

Market value and where to buy Skyline R31

Prices for Nissan Skyline R31 vary greatly depending on the condition, modification and history of the vehicle. Estimated prices for 2026:

Condition Price (thousand rubles) Notes
Project (needs major renovation) 300–600 Rusty body, non-working engine
Chassis (drives, but requires modifications) 800–1 500 The engine is running, the body has pockets of rust
Good (well maintained, no serious problems) 1 800–3 000 Original paint, working turbine, minimal corrosion
Excellent (restored, collectible) 4 000–7 000+ Complete overhaul, tuning, rare modifications (for example, GTS-R)

Where to look Skyline R31:

  • 🌍 Japan — auctions USS Tokyo, Goo-Net (prices are lower, but importer's help is needed).
  • 🇷🇺 Russia — Avito, Drom, thematic groups on VKontakte (for example, "Skyline Club Russia").
  • 🇪🇺 Europe — Mobile.de, PistonHeads (there are few cars, but often in good condition).
⚠️ Attention: Upon purchase Skyline R31 from Japan please note mileage history! Many cars have “twisted” odometers - the actual mileage may exceed 200–300 thousand km. Check the condition of the interior (wear of the steering wheel, pedals) and the presence of a service book.

Documents and customs clearance:

  • 📄 To import into Russia you need PTS (issued after customs clearance).
  • 💰 Cost of customs clearance - from 300 to 800 thousand rubles. (depending on engine size and year of manufacture).
  • 🚘 After customs clearance it is required certification (can be registered as a "classic car" to simplify the procedure).

Skyline R31 vs R32: which is better to choose?

Many potential owners are faced with a choice: Skyline R31 or more modern R32? Let's compare the key aspects:

Criterion Nissan Skyline R31 Nissan Skyline R32
Design Classic rectangular shapes, retro style More aggressive, "bubble" design
Engines RB20ET/DET, CA18ET (easier to tune) RB20DET, RB25DE, RB26DETT (more power, but more expensive to maintain)
Suspension Softer, worse handling at high speeds Stiffer, better balance (system HICAS)
Price Cheaper (from 300 thousand rubles per project) More expensive (from 800 thousand rubles for a running car)
Collectible value Growing (especially in GTS-R) Higher (due to GT-R and cultural influence)

Choose R31 if:

  • 💰 Your budget is limited.
  • 🔧 You love retro style and are ready to restore it.
  • 🚗 You need a tuning project with a simple design.

Choose R32 if:

  • 🏁 Dynamics and controllability are important to you.
  • 💎 Are you looking for a car with high collectible value.
  • 🛠️ Are you willing to spend more on maintenance (for example, a system HICAS requires regular adjustment).
💡

The R31 is easier to repair and cheaper to maintain, but the R32 offers better ride quality and a more modern platform.

FAQ: Frequently asked questions about Nissan Skyline R31

🔧 Which R31 engine is the most reliable?

Considered the most reliable RB20E (atmospheric) - it does not have a turbine, which adds complexity. However, it is better suited for tuning RB20ET or RB20DET. Diesel LD28 It is also very durable, but spare parts for it are more difficult to find.

💰 How much does it cost to overhaul an RB20DET engine?

Cost of capital RB20DET in Russia varies from 150 to 300 thousand rubles, depending on the degree of wear and quality of spare parts. The price includes:

  • Block boring and honing.
  • Replacement of pistons, rings, liners.
  • Turbine repair or replacement.
  • Replacement of timing chain and seals.

If you are planning tuning, immediately budget for reinforced parts (forged pistons, reinforced crankshaft).

🔌 How to solve electrical problems in R31?

The main electrical problems in Skyline R31 related to:

  1. Oxidation of contacts in the fuse box (clean contact fluid).
  2. Worn wiring (especially in the pedal assembly area).
  3. Malfunction of the generator relay (symptom: flashing battery charge lamp).

Recommended:

  • Replace all relays with new ones (original Nissan or Omron).
  • Check the ground on the body (often oxidizes under the battery).
  • Install an additional fuse on the ECU circuit.
🚗 Is it possible to install an engine from an R32 on an R31?

Yes, this is a popular swap. Most often they put RB25DET or RB26DETT from Skyline R32 GT-R. To do this you will need:

  • Modifying engine mounts (or purchasing ready-made swap kits).
  • Replacing the gearbox (from R32 or reinforced OS Giken).
  • Wiring adaptation (use standalone ECU or modify the regular one).

The budget for such a swap is from 500 thousand rubles (excluding the cost of the donor motor).

📄 How to legalize Skyline R31 in Russia?

For legalization Nissan Skyline R31 in Russia it is necessary:

  1. Go through customs clearance (pay duties and VAT).
  2. Get vehicle type approval (VTA).
  3. Pass a technical inspection and receive PTS.

From 2026, the following benefits apply to cars over 30 years old:

  • The duty has been reduced to 0.54 €/cm³ (instead of standard 2.5 €/cm³).
  • No certification required Euro 5.

Average cost of legalization — 400–700 thousand rubles.