Nissan GT-R is a legendary Japanese supercar that has won the hearts of car enthusiasts around the world. His heart is an engine VR38DETT - has become a symbol of reliability and technological excellence. But what makes this motor so special? Why does it remain relevant decades later?
In this article we will look at technical specifications, evolution, weaknesses and engine tuning potential Nissan GT-R. You will learn how unique VR38DETT design with a pair of turbines and variable valve timing system provides incredible dynamics, and why this motor is considered one of the most durable in its class. We’ll also compare it with its competitors and answer frequently asked questions from owners.
VR38DETT Engine Specifications
Engine VR38DETT - this is 3.8 liter V6 twin-turbocharged, designed specifically for Nissan GT-R R35. Its key parameters:
- 🔧 Volume: 3799 cm³
- 💨 Turbines: two IHI (models depend on year of manufacture)
- 🔥 Power: from 480 to 600 hp (depending on modification)
- ⚙️ Torque: 588–652 Nm
- 🛢️ Lubrication system: "dry sump" (in some versions)
Feature of VR38DETT - aluminum cylinder block with cast iron sleeves, which ensures strength under high loads. The motor is equipped with a system VVEL (Variable Valve Event & Lift), which dynamically adjusts valve lift and valve timing. This allows you to optimize power at any speed.
Interesting fact: in GT-R Nismo the engine produces 600 hp thanks to modified turbines, an improved cooling system and re-flashed electronics. At the same time, the engine resource remains at the level of 150–200 thousand km with proper operation.
- Nissan VR38DETT
- Toyota 2JZ-GTE
- BMW S65
- Ford EcoBoost
- Other
Evolution of VR38DETT: from R35 to special versions
Since its debut in 2007, the engine VR38DETT has undergone several modernizations. Let's look at the key stages:
| Year/Model | Power (hp) | Torque (Nm) | Features |
|---|---|---|---|
| 2007–2010 (Basic) | 480 | 588 | First generation with turbines IHI RHF55 |
| 2011–2016 (Renewed) | 530 | 612 | New turbines IHI RHF5HB, improved cooling |
| 2017–2021 (GT-R Nismo) | 600 | 652 | Turbines IHI RHF5HBR, titanium valves, reinforced block |
| 2020–present (Track Edition) | 570 | 637 | Lightweight version with improved lubrication system |
In 2017 Nissan presented GT-R Nismo with modified VR38DETT. Engineers increased the compression ratio, installed more efficient turbines and optimized the injection system. Result - power increased to 600 hp. without loss of reliability.
It is important to note that all versions of VR38DETT are compatible with ethanol (E85), which opens up wide possibilities for tuning. However, this requires reconfiguring the ECU and replacing the fuel system.
If you plan to switch to E85, install an additional fuel pump and injectors with a performance reserve of 20-30%.
Weaknesses and typical problems of VR38DETT
Despite the legendary reliability, VR38DETT there are several “diseases” that every owner should know about GT-R:
- 🔥 Turbine overheating: During aggressive driving, the oil in the turbines can coke, which leads to their failure. The solution is regular oil changes (every 5–7 thousand km) and the use of synthetics 5W-40 or 0W-40.
- 🛢️ Seal leaks: Over time, the crankshaft and camshaft seals may leak. The symptom is oil stains under the car.
- ⚡ Problems with ignition coils: on engines before 2014, coils often fail, which leads to misfires.
- 🔧 Timing chain wear: On runs over 100 thousand km, the chain may stretch, which requires replacement with tensioners.
⚠️ Attention: If black smoke comes out of the exhaust pipe after sudden acceleration, this may indicate a breakdown of the turbine or problems with the intercooler. Check the boost pressure immediately!
Another common problem is valve contamination PCV. When the valve is clogged, the pressure in the crankcase increases, which leads to oil leaks and increased consumption. The solution is to clean or replace the valve every 30–40 thousand km.
How to check turbines on VR38DETT?
1. Start the engine and let it warm up. 2. Press the gas sharply to 4–5 thousand rpm. 3. If a whistle or grinding sound is heard after releasing the gas, the turbines are worn out. 4. Check the boost pressure using a diagnostic scanner (normal: 0.8–1.0 bar at drain).
VR38DETT vs competitors: comparison with 2JZ-GTE and S65
Engine Nissan VR38DETT often compared to the legendary Toyota 2JZ-GTE And BMW S65. Let's see who is stronger:
| Parameter | VR38DETT (Nissan) | 2JZ-GTE (Toyota) | S65 (BMW) |
|---|---|---|---|
| Volume | 3.8 l | 3.0 l | 4.0 l |
| Power (drain) | 480–600 hp | 280–320 hp | 420 hp |
| Tuning potential | 800–1000 hp | 800–1200 hp | 550–700 hp |
| Reliability | High (lifetime 150–200 thousand km) | Very high (lifetime 300+ thousand km) | Medium (resource 120–150 thousand km) |
| Features | Twin turbocharging, VVEL | Cast iron block, simple design | High speed (8250 rpm), naturally aspirated |
VR38DETT wins against S65 in terms of power and tuning potential, but loses 2JZ-GTE in reliability at high power. However, Nissan there is an advantage - modern technologies (VVEL, direct injection), which are absent from Toyota.
If you need a motor for extreme tuning, 2JZ-GTE will be the best choice. But if out-of-the-box dynamics and advanced technologies are important - VR38DETT out of competition.
VR38DETT is optimal for those who want a combination of high power, modern technology and reasonable resource. For record power (1000+ hp), it is better to consider the 2JZ-GTE.
Tuning VR38DETT: how to increase power without losing reliability
Engine VR38DETT has huge potential for tuning. Here are the main stages of modernization:
- ECU firmware: even the stock firmware allows you to increase the power to 550–580 hp by optimizing fuel maps and ignition timing. Popular solutions: Cobb Accessport, EcuTek.
- Replacing turbines: stock IHI can be replaced by GReddy, HKS or Garrett for power 700–900 hp.
- Strengthening the fuel system: installation of injectors ID1000 or Nismo 740cc, additional fuel pump Walbro 450.
- Intercooler and exhaust: replacing the stock intercooler with an aluminum one (for example, GReddy) and direct flow installation (for example, HKS Hi-Power) will reduce the boost temperature and improve performance.
For power 800+ hp you will need:
- 🔧 Reinforced connecting rods and pistons (e.g. JE Pistons or Manley)
- 🛡️ Forged crankshaft
- 🔥 Improved cooling system (oil and water radiators)
⚠️ Attention: When tuning up to 700+ hp. be sure to install reinforced grip (For example, Nismo Twin-Plate), otherwise the stock one will not withstand the load and will begin to slip.
The cost of full tuning up to 800 hp. amounts to 150–250 thousand rubles (excluding work). But remember: each stage of modernization requires tuning on a dyno!
Check compression in cylinders|Change oil and filters|Install high-quality fuel (98+ or E85)|Diagnose turbines for wear|Prepare a budget for tuning the ECU-->
VR38DETT maintenance: what needs to be done regularly
To the engine VR38DETT long lasting, follow this maintenance schedule:
- 🛢️ Oil change: every 5–7 thousand km (use Motul 8100 X-Cess 5W-40 or Liqui Moly Leichtlauf 5W-40).
- 🔧 Replacing air filters: every 15–20 thousand km (we recommend K&N or BMC).
- ⚡ Spark plugs: every 30–40 thousand km (NGK Iridium IX or Denso Iridium Power).
- 🔥 Turbine check: every 50 thousand km (diagnostics at the stand).
- 🛑 Replacing the timing chain: every 100–120 thousand km (together with tensioners).
Pay special attention cooling system. B GT-R Intercoolers often overheat, so flush the radiators and check the coolant level every 2 years. Use antifreeze Nissan Long Life Coolant or its analogues.
If you ride aggressively (track days, drag racing), reduce your oil change intervals to 3–5 thousand km and install an additional oil cooler. This will extend the life of the turbines and piston group.
Frequently asked questions about the Nissan GT-R engine (FAQ)
How much horsepower can you get out of a VR38DETT without losing life?
With proper tuning (firmware, turbines, fuel), you can safely increase power to 650–700 hp without major modifications to the block. For 800+ hp it will require forged internals and a heavy-duty transmission.
What oil is better to fill in VR38DETT?
Optimal options:
- Motul 8100 X-Cess 5W-40 — the best choice for tuned engines.
- Liqui Moly Leichtlauf 5W-40 — good price/quality balance.
- Nissan Genuine Oil 5W-40 - original, but expensive.
Avoid oils with higher viscosities 5W-40 — they impair the lubrication of turbines during cold starts.
Is it possible to drive on 92 gasoline?
No! Engine VR38DETT designed for 98 gasoline (octane number not lower than 98). Using 92 will lead to detonation, overheating and failure of the turbines. As a last resort, you can fill in 95 with octane-boosting additives.
How often should the timing chain be replaced?
The manufacturer declares the chain life 150 thousand km, but in practice it should be changed every 100–120 thousand km, especially if the machine is operated in aggressive mode. Signs of wear: metallic knocking during cold start, unstable speed.
What to do if the GT-R starts to feel “stupid” when accelerating?
Possible reasons:
- Clogged fuel injectors (need ultrasonic cleaning).
- Worn turbines (check boost pressure).
- Problems with ignition coils (diagnostics
OBD-II). - Faulty valve
PCV(replace with a new one).
Start with diagnostics using a scanner (for example, Launch X431), then check fuel pressure and compression.