Common Nissan GT-R Issues and How to Fix Them for Peak Performance

The Nissan GT-R R35 is an icon of speed and engineering, often dubbed “Godzilla” for its monstrous performance. However, like any high-performance machine, it has its fair share of common issues that can impact reliability and drivability. Whether you own an R35 GT-R or are considering one, understanding common problems and how to fix them is crucial for keeping this supercar-killer at peak performance.

1. GR6 Dual-Clutch Transmission (DCT) Issues

The Problem: One of the most notorious issues with the GT-R R35 is its GR6 transmission. Symptoms include:
🔹 Hard shifting or clunking between gears
🔹 Transmission warning lights
🔹 Solenoid failure, causing delays in gear engagement

The Fix:

✅ Upgrading the Solenoids – Replacing or rebuilding the pressure sensor and solenoids can restore smooth shifts.
✅ Transmission Fluid Change – Use OEM Nissan GR6 Fluid or Motul DCTF every 15,000-20,000 miles.
✅ Dodson or ShepTrans Clutch Upgrades – If running high horsepower, upgrading to Dodson clutches can prevent future failures.

2. Turbocharger Oil Seal Leaks & Boost Issues

The Problem: The GT-R’s factory turbos are robust, but oil leaks from the turbo seals can lead to smoke from the exhaust and loss of boost pressure.

The Fix:

✅ Check for Oil in Intercooler Piping – If oil is present, it may indicate worn turbo seals.
✅ Upgrade Turbo Drains & Lines – Installing larger turbo drains can prevent excessive backpressure and oil leaks.
✅ Upgrade to Hybrid Turbos – If boosting over 600 HP, upgrading to GTX turbos or HKS GT1000 kits ensures reliability.

3. Rod Bearing Wear on High Mileage GT-Rs

The Problem: The VR38DETT engine is a beast, but high mileage or aggressive tuning can lead to rod bearing wear, causing knocking noises and potential engine failure.

The Fix:

✅ Use High-Quality Oil – Always use Motul 300V 5W-40 or Castrol Edge 10W-60 for better protection.
✅ Monitor Oil Pressure – A drop in oil pressure can indicate early bearing wear.
✅ Upgrade Oil Pump – If running high boost, an upgraded oil pump (T1 or Nismo) ensures better lubrication.

4. Stock Fuel System Limitations

The Problem: When tuning for more horsepower (over 600 WHP), the factory fuel system becomes a bottleneck, leading to fuel starvation and lean conditions.

The Fix:

✅ Upgraded Fuel Injectors – Switching to ID1300 or ID1700 injectors supports high-performance builds.
✅ High-Flow Fuel Pumps – A Walbro 485 or AMS Alpha Fuel System prevents fuel starvation.
✅ E85 Tune – If running E85, upgrading fuel lines and rails is a must.

5. Brake System Overheating & Rotor Cracks

The Problem: The stock GT-R brakes are powerful, but under track conditions, they can overheat and develop cracks in the rotors.

The Fix:

✅ Upgraded Rotors – Switch to DBA, AP Racing, or GiroDisc two-piece rotors for better heat dissipation.
✅ Performance Brake Pads – Using Endless MX72 or Ferodo DS2500 pads enhances stopping power.
✅ Brake Cooling Ducts – Installing brake ducts reduces heat buildup for track use.

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