Nissan R31 Skyline: a complete guide to the iconic model from 1985–1989.

Nissan R31 Skyline - one of the most underrated models in the legendary line Skyline, released between 1985 and 1989. This car became a bridge between the classic "round headlights" R30 and revolutionary R32, laying the foundation for Nissan's future sporting achievements. Unlike its predecessors, R31 received a more modern design, improved aerodynamics and a number of technical innovations that made it a favorite among enthusiasts JDM cultures.

Today R31 Skyline It is valued not only as a collectible rarity, but also as an excellent platform for tuning. Thanks to the reliable engines of the series RB, durable suspension and rear-wheel/all-wheel drive layout, this model allows you to create both track monsters and stylish restoration projects. In this article we will look at technical specifications, weaknesses, tuning options and will give practical advice on selection and operation Nissan R31.

Technical specifications Nissan R31 Skyline

Nissan R31 Skyline was offered in several modifications, differing in engines, drives and equipment levels. Basic versions were equipped with naturally aspirated in-line sixes. RB20E (2.0 l, 125–130 hp), while the top GTS-R And GTS-X got turbocharged RB20DET (180–190 hp) and even rare RB24DET (2.4 l, ~200 hp). Transmissions ranged from a 5-speed manual to a 4-speed automatic with overdrive.

Feature R31 was the appearance of an all-wheel drive system ATTESA ETS (Advanced Total Traction Engineering System for All-Terrain) - a prototype of the legendary system ATTESA E-TS from R32 GT-R. B R31 it was less advanced (mechanical locking differential on the rear axle + viscous coupling for connecting the front one), but already demonstrated potential for drifting and rallying. Suspension - classic for Skyline: front MacPherson, behind multi-lever with springs and shock absorbers separately.

• 🔧 Engines: RB20E (atmo), RB20DE (DOHC), RB20DET (turbo), RB24DET (rare)
• 🚗 Drive: rear (FR) or all-wheel drive (AWD, ATTESA)
• ⚙️ Boxes: 5 manual transmission, 4 automatic transmission (with overdrive)
• 📏 Dimensions: 4680×1690×1340 mm (wheelbase 2615 mm)

One of the unique features R31 became an optional system HICAS (High Capacity Actively Controlled Steering) - rear steering, which improved maneuverability at high speeds. However, many owners turn it off due to the complexity of maintenance and not always predictable behavior.

Weaknesses and typical problems

Despite the legendary reliability, Nissan R31 Skyline has a number of “diseases” that you should know about before purchasing. The main problem is corrosion. Body R31 is prone to rust in the following areas:

• 🚗 Thresholds and lower parts of doors - especially for cars operated in snowy regions.
• 🔩 Rear suspension mounts - rust from the inside, which leads to backlash.
• 🔥 Fenders and hood - often rot at the edges due to poor quality anti-corrosion treatment at the factory.

The second critical point is RB series engines. Although they are famous for their service life (300+ thousand km with proper maintenance), they have weaknesses:

• 🛢️ Oil pump — on engines with mileage over 200 thousand km it can wear out, which leads to a drop in oil pressure.
• 🔥 Turbine (on RB20DET) — original Garrett T25 often require replacement after 150–180 thousand km.
• 🔧 Camshafts - on RB20DE And RB20DET Over time, the cams wear out, which leads to a “knock” when cold.

⚠️ Attention: Upon purchase R31 with a turbo engine, be sure to check the compression in the cylinders and the condition of the intercooler. Many owners install cheap Chinese analogues, which quickly fail.

Problem	Reason	Solution	Repair cost (approx.)
Oil leak from under the valve cover	Gasket wear or cover deformation	Replacing the gasket + grinding the surface	5 000–12 000 ₽
Knock in rear suspension	Wear of silent blocks or rust of fasteners	Replacement of silent blocks + anti-corrosion treatment	15 000–30 000 ₽
Problems with HICAS	Fluid leak or hydraulic pump failure	System shutdown or complete repair	20 000–50 000 ₽

Tuning potential of Nissan R31 Skyline

Nissan R31 Skyline — an excellent base for tuning thanks to its simple and reliable design. Main directions of modifications:

1. Engine and turbo

Atmospheric RB20E/DE easily turbocharged with the help of kits on the base RB20DET. Popular options:

• 🔥 Turbine installation Garrett T28 or T3/T4 with intercooler.
• 💨 Replacement of the fuel system: injectors Nismo 550cc, fuel pump Walbro 255 l/h.
• 📈 Chip tuning or replacing the ECU with Haltech/Link for flexible customization.

On turbo engines RB20DET really remove 300–350 hp without major modifications to the block. For more power, you will need to replace the pistons, connecting rods and crankshaft (for example, kits from JE or CP-Carrillo).

2. Suspension and brakes

Standard suspension R31 soft and designed for comfort. For sporty riding we recommend:

• 🚗 Installation of coilovers Tein or BC Racing with adjustable hardness.
• 🔧 Replacing silent blocks with polyurethane ones (Whiteline or Hardrace).
• 🛑 Brake update: calipers from R32 Skyline or kits Wilwood.

3. Exterior and interior

External tuning R31 often comes down to stylization R32 or retro gloss. Popular modifications:

• 🎨 Repainting in original colors: Gun Metallic (732) or Black Pearl (300).
• 💡 Replacing optics with LED or installing “angel eyes”.
• 🪑 Upholstery of the interior in leather or Alcantara with the addition of sports seats Bride or Recaro.

How to choose a Nissan R31 Skyline: buyer's checklist

Upon purchase Nissan R31 It is important to take into account not only the condition of the body and engine, but also a number of nuances related to the history of the model. Here are the key points to pay attention to:

Inspect the body for rust (especially sills and suspension mounts)|

Check compression in cylinders (normal: 12–14 bar)|

Make sure there is no oil starvation (oil pressure at idle > 1 bar)|

Check the operation of HICAS (if equipped) and the condition of the hydraulic system|

Inspect the condition of the turbine (on RB20DET) for play and oil leaks-->

Pay special attention documents. Many R31 in Russia these are “gray” cars imported from Japan under the “customs clearance for spare parts” scheme. Make sure that:

• 📄 Yes PTS or STS with correct engine data (volume and number must match the real ones).
• 🔧 The annotation for the PTS indicates the correct year of manufacture (1985–1989).
• 🚨 No traffic police restrictions (check the database traffic police.rf).

⚠️ Attention: Be careful with cars that have had their engines replaced. An appropriate entry must be made in the title, otherwise problems may arise during the sale or registration.

Prices for Nissan R31 Skyline in Russia vary from 300,000 to 1,200,000 RUR depending on condition and modification. The most expensive ones are GTS-R with all-wheel drive and turbo engine. Cheap copies (up to 400,000 ₽) usually require serious investments in body and engine repairs.

Operation and maintenance: tips for owners

Service Nissan R31 Skyline has its own characteristics related to the age of the car and the specifics of Japanese engineering. Here are the key recommendations:

1. Engine and transmission

Motors RB They love high-quality oil and regular changes. Optimal intervals:

• 🛢️ Oil: semi-synthetic 10W-40 or synthetics 5W-40 (For example, Liqui Moly Leichtlauf), replacement every 5,000–7,000 km.
• 🔧 Filters: oil and fuel - every 10,000 km, air - every 15,000 km.
• ⚙️ Timing belt: replacement every 80,000 km (on RB20DE/DET).

For manual transmission, it is recommended to use gear oil GL-4 75W-90 (For example, Red Line MT-90). In automatic box (A43D) oil Dexron III need to be changed every 40,000 km.

2. Suspension and steering

Silent blocks and ball joints on R31 wear out every 50,000–70,000 km. Signs of malfunction:

• 🚗 Knock when driving over bumps.
• 🔧 Play in the steering.
• 🔥 Uneven tire wear.

If your R31 equipped with a system HICAS, monitor the fluid level in the tank (the same fluid is used as for power steering - PSF). At the first sign of a leak (oil stains under the car near the rear axle), it is better to turn off the system.

3. Electrics

Electrical wiring R31 reliable, but over time the contacts oxidize. Frequent problems:

• 🔋 Brake lights or turn signals do not work (oxidation of contacts in the fuse box).
• 💡 The lamps in the dashboard burn out (you need to solder new LEDs).
• 📻 The radio or climate control fails (problems with body weight).

How to check body weight?

Often electrical problems are associated with poor ground contact. The main points of mass attachment in R31 are located:

1. Under the battery (on the body).

2. On the partition between the engine compartment and the passenger compartment (driver’s side).

3. On the back panel (next to the lights).

Clean the contacts with sandpaper and treat Lithol and tighten the bolts.

Nissan R31 Skyline in motorsport

Although Nissan R31 Skyline did not achieve as much racing success as his successor R32 GT-R, he actively participated in various championships in the 1980s. Most notable achievements:

• 🏁 JTC (Japanese Touring Car Championship): R31 GTS-R with engine RB20DET-R (about 280 hp) performed in the class Group A, competing with Toyota Corolla GT And Honda Civic Si.
• 🌍 Rally: All-wheel drive versions R31 used in rally raids, including Safari Rally (Kenya), where their strength and maintainability were valued.
• 🏆 Drift: In Japan R31 was popular in early drift competitions due to its balanced rear-wheel drive platform.

One of the most famous racing modifications was Nissan Skyline R31 House of Kolor - car prepared by the team Nismo for demonstration runs. It was equipped with an engine RB26DETT (yes, the same one that later appeared in R32 GT-R!) and developed more 400 hp This example became the prototype for future GT-Rs and proved the potential of the R31 platform in motorsport.

Today the original racing R31 - a great rarity, but enthusiasts restore production models for retro racing. Popular improvements for the track:

• 🔥 Installation of riveted block RB26DETT with turbines Garrett GT2860.
• 🚗 Complete replacement of the suspension with an adjustable one (for example, kits Ohlins).
• 🛑 Brake system from R34 GT-R (calipers Brembo + disks 330 mm).

Restoration and search for spare parts

Restoration Nissan R31 Skyline - a difficult task, but doable thanks to a developed community of owners. Main sources of spare parts:

• 🇯🇵 Japan: The most reliable option is to order through Yahoo! Auctions or specialty stores (Amayama, RHDJapan). Prices for original parts (for example, bumpers or headlights) start from 10 000 ₽.
• 🇷🇺 Russia: In Moscow and St. Petersburg there are warehouses with used spare parts from dismantling (for example, JDM-Zapchasti). New parts (silent blocks, repair kits) can be found at Nissan Classic Parts.
• 🌍 Europe/USA: Stores like Black Dragon Auto (UK) or Z1 Motorsports (USA) offer tuning and restoration kits.

The most difficult parts to find:

• 🔧 Body panels: original fenders, hoods and bumpers for R31 are rare.
• 💡 Optics: Taillights and front headlights often crack over time.
• 📻 Electronics: Control units HICAS and climate control systems fail, but new ones are not produced.

⚠️ Attention: When buying used spare parts from Japan, pay attention to the condition of the rubber bands and plastic - after 30+ years they could have dried out. For example, door seals or cooling system pipes often require replacement.

If you are planning a complete restoration, it is better to budget from 500 000 ₽ (excluding the cost of the car itself). This amount will include:

• 🔨 Body work (sandblasting + painting) — 200 000–300 000 ₽.
• 🔧 Engine overhaul — 150 000–250 000 ₽.
• 🪑 Interior restoration (upholstery, plastic replacement) — 100 000–150 000 ₽.

FAQ: Frequently asked questions about the Nissan R31 Skyline

❓ Is it possible to install the RB26DETT engine from the R32 GT-R in the R31?

Yes, this is a popular swap, but some improvements will be required:

• Replacing the pallet (in R31 it interferes with the steering rack).
• Modifying the transmission mounts (if using Getrag from R32).
• Adaptation of wiring for ECU from RB26.

Swap budget - from 300 000 ₽ (excluding the cost of the motor itself).

❓ What oil should I fill in RB20DET?

For turbo engine RB20DET We recommend synthetic oil with a viscosity 5W-40 or 10W-40, corresponding to the standard API SN or ACEA A3/B4. Popular options:

• Liqui Moly Leichtlauf High Tech 5W-40
• Motul 8100 X-Cess 5W-40
• Idemitsu Zepro Touring 5W-40 (original for Nissan)

Replacement interval - 5,000–7,000 km (for turbo engines more often than for atmospheric ones).

❓ How to disable the HICAS system?

Shutdown HICAS is performed in several stages:

1. Drain the fluid from the system (tank next to the power steering).
2. Remove the pump HICAS and plug the hoses.
3. Install the plugs on the steering rack and rear gearbox.
4. Disconnect electrical (fuse HICAS in the block under the hood).

After disconnecting, it is recommended to do a wheel alignment, as the suspension geometry will change.

❓ How much does OSAGO insurance cost for R31?

Cost of MTPL for Nissan R31 Skyline depends on:

• Engine power (coefficient KM).
• Registration region.
• Driver's length and age.

Approximate prices (for 2026):

• RB20E (130 hp): 8 000–12 000 ₽.
• RB20DET (190 hp): 12 000–18 000 ₽.

For CASCO prices start from 30 000 ₽ per year (with franchise).

❓Where can you find an R31 owners club in Russia?

Active Owner Communities Nissan R31 Skyline:

• Group VK "Nissan Skyline R31" — more than 5,000 participants, a lot of useful information on repairs.
• Forum JapanCar.ru - section on Skyline with subsections for each generation.
• Telegram chat "Skyline R31" — prompt assistance and advertisements for the sale of spare parts.

It's also worth keeping an eye on events like JDM Fest or Retro Car Show, where owners of classic cars often gather Skyline.