Table of Contents
Introduction
The RB26DETT engine, known for its power and durability, is a popular choice among car enthusiasts and tuners. Originally producing around 320 horsepower, many seek to upgrade their turbochargers to unlock greater performance. This article explores the differences between stock and upgraded turbo setups, detailing the potential power gains, benefits, and considerations for those looking to push their RB26 to the next level.
Understanding the RB26DETT Engine
The RB26DETT is a 2.6-liter inline-six engine that features a twin-turbo setup. It was first introduced in the Nissan Skyline GT-R and has since become a staple in the tuning community. With its robust design, it can handle significant power increases with the right modifications.
Stock Turbo Specifications
The stock RB26DETT turbochargers are designed for reliability and efficiency. They are capable of providing sufficient power for everyday driving and moderate performance applications. Key specifications include:
- Stock horsepower: 320 HP
- Turbo size: T28
- Boost pressure: Approximately 0.7 bar (10 psi)
Limitations of Stock Turbos
While the stock turbos are adequate for many drivers, they do have limitations. These include:
- Limited boost potential
- Lower efficiency at higher RPMs
- Inability to support significant horsepower increases
Aftermarket Turbo Upgrades
Many enthusiasts choose to upgrade their RB26 turbos to achieve higher power outputs. Aftermarket options can significantly enhance performance, with various sizes and configurations available. Common upgrades include:
- GT28RS (Disco Potato)
- GT30 series turbos
- GT35 series turbos
Power Gains from Upgraded Turbos
Upgrading to larger turbos can yield impressive power gains. Depending on the setup, tuners report horsepower figures ranging from:
- GT28RS: 400-450 HP
- GT30: 500-550 HP
- GT35: 600+ HP
Supporting Modifications
To maximize the potential of upgraded turbos, additional modifications are often necessary. These can include:
- Upgraded fuel injectors
- High-flow fuel pump
- Aftermarket intercooler
- ECU tuning
- Upgraded exhaust system
Comparing Power Gains
When comparing stock and upgraded turbo setups, the differences in power output are significant. Below is a summary of potential power gains:
- Stock RB26DETT: 320 HP
- GT28RS Upgrade: 400-450 HP
- GT30 Upgrade: 500-550 HP
- GT35 Upgrade: 600+ HP
Considerations for Upgrading
Before deciding to upgrade your RB26 turbos, consider the following:
- Budget for parts and labor
- Desired power level and usage (street vs. track)
- Reliability of the engine after upgrades
- Insurance and legal considerations for modified vehicles
Conclusion
Upgrading the turbochargers on an RB26DETT engine can lead to substantial power gains, transforming a 320 HP engine into a beast capable of over 600 HP. With the right modifications and tuning, enthusiasts can enjoy enhanced performance and a thrilling driving experience. However, careful consideration of the associated costs and modifications is essential for achieving the best results.