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The RB26DETT engine, originally designed for the Nissan Skyline GT-R, has become a favorite among performance enthusiasts. With its robust engineering and potential for high horsepower, many builders aim to push this engine beyond 700 horsepower. In this article, we will explore the top upgrades necessary to achieve this goal while ensuring reliability and drivability on the street.
Understanding the RB26DETT Engine
The RB26DETT is a 2.6-liter inline-six engine equipped with twin turbochargers. Its design features a strong iron block and aluminum DOHC cylinder head, which contribute to its ability to handle high power outputs. However, to reach the 700+ hp mark, several key modifications are essential.
Essential Upgrades for 700+ HP
- Turbochargers: Upgrading to larger, high-efficiency turbochargers is crucial for achieving higher horsepower levels.
- Fuel System: A high-flow fuel pump and larger injectors are necessary to supply the increased fuel demand.
- ECU Tuning: A standalone ECU or a high-quality remap will optimize engine performance and ensure safe operation.
- Intercooler: A larger front-mounted intercooler will help reduce intake temperatures, improving performance.
- Exhaust System: A high-performance exhaust system will reduce back pressure and enhance turbo spool.
- Intake Manifold: An upgraded intake manifold can improve airflow and throttle response.
- Engine Internals: Forged pistons and connecting rods are recommended for reliability at high power levels.
Turbocharger Options
To reach 700+ hp, consider upgrading to turbochargers such as the Garrett GT30 or GT35 series. These turbos offer the necessary flow rates while maintaining quick spool times, which is essential for street driving.
Fuel System Upgrades
For the fuel system, a Walbro 450 LPH fuel pump paired with 1000cc injectors will provide adequate fuel for high horsepower applications. Ensuring the fuel system can meet the demands of the engine is critical for performance and reliability.
ECU Tuning
Investing in a standalone ECU or a high-quality tuning solution like the Nistune or AEM Infinity can unlock the full potential of your RB26DETT. Proper tuning will not only maximize power but also improve fuel efficiency and drivability.
Cooling Solutions
A larger front-mounted intercooler is essential to manage the increased heat generated by higher boost levels. Brands like Mishimoto and Greddy offer excellent options that fit the RB26DETT.
Exhaust System Improvements
A high-performance exhaust system, including a turbo-back setup, will help reduce back pressure and improve turbo response. Look for systems that feature 3-inch piping and high-flow catalytic converters or test pipes.
Intake Manifold and Throttle Body
Upgrading to an aftermarket intake manifold can significantly improve airflow. Brands like Plazmaman offer intake manifolds designed for high-performance applications. Additionally, consider a larger throttle body to enhance throttle response.
Strengthening Engine Internals
To safely run over 700 hp, upgrading to forged internals is a must. Forged pistons and connecting rods will withstand the added stress and heat generated at high power levels. Brands such as Wiseco and Manley are reputable choices for these components.
Maintaining Reliability
While achieving 700+ hp is exciting, maintaining reliability is crucial for street use. Regular maintenance, including oil changes and monitoring boost levels, will help ensure the longevity of your RB26DETT.
Conclusion
Building a 700+ hp RB26DETT requires thoughtful upgrades and careful tuning. By focusing on the essential components like turbochargers, fuel systems, and engine internals, you can create a powerful and reliable street machine. Always remember to balance performance with drivability to enjoy your high-powered RB26DETT to the fullest.