Table of Contents
The RB26DETT engine, known for its robust performance and tuning potential, has become a favorite among automotive enthusiasts seeking to achieve impressive horsepower figures. In this article, we will explore how to build a cost-effective RB26DETT engine to reach the coveted 500 horsepower mark using Cosworth pistons and Tomei camshafts.
Understanding the RB26DETT Engine
The RB26DETT is a 2.6-liter inline-six twin-turbo engine produced by Nissan. It is renowned for its high-revving capabilities and strong aftermarket support. Understanding its components and how they contribute to power output is essential for any tuning project.
- Engine Type: Inline-six, twin-turbocharged
- Displacement: 2.6 liters
- Power Output: Stock 280 hp, capable of much more with tuning
Key Components for a 500 HP Build
To achieve 500 horsepower from the RB26DETT, specific components are crucial. The combination of high-quality pistons and camshafts plays a significant role in reaching this power goal while maintaining reliability.
Cosworth Pistons
Cosworth pistons are a popular choice for those looking to enhance their RB26DETT engine. These pistons are designed to withstand high levels of boost and provide the necessary compression for optimal performance.
- Material: Lightweight forged aluminum
- Compression Ratio: Optimized for turbo applications
- Durability: Engineered to handle high RPM and boost levels
Tomei Camshafts
Tomei camshafts are another essential component in maximizing the RB26DETT’s performance. They are designed to improve airflow and increase power throughout the RPM range.
- Profile: Aggressive lift and duration for better valve timing
- Compatibility: Designed specifically for the RB26DETT engine
- Performance: Enhances mid-range and top-end power delivery
Supporting Modifications
While Cosworth pistons and Tomei camshafts are vital for achieving 500 horsepower, several supporting modifications are necessary to ensure the engine can handle increased power levels reliably.
Upgraded Turbochargers
To achieve 500 hp, upgrading the turbochargers is essential. Larger turbos can provide the necessary airflow to support higher horsepower levels.
- Options: Consider GT2860R or GT3076R turbos
- Boost Levels: Aim for 1.2 to 1.5 bar of boost
- Intercooling: Ensure proper cooling to prevent detonation
Fuel System Upgrades
A robust fuel system is crucial to support increased power. Upgrading fuel injectors and the fuel pump will ensure adequate fuel delivery.
- Injectors: Upgrade to 750cc or larger
- Fuel Pump: Consider a high-flow aftermarket pump
- Fuel Management: Use a standalone ECU for precise tuning
Tuning for Performance
After all modifications are complete, proper tuning is vital to achieve the desired horsepower while maintaining engine reliability. A professional tuner can help optimize the engine’s performance through careful adjustments.
- Dyno Tuning: Essential for maximizing power output
- A/F Ratios: Keep air-fuel ratios within safe limits
- Ignition Timing: Adjust for optimal performance and safety
Conclusion
Building a cost-effective RB26DETT engine to reach 500 horsepower is achievable with the right components and modifications. By utilizing Cosworth pistons and Tomei camshafts, along with supporting upgrades and proper tuning, you can create a powerful and reliable engine that excels on both the street and the track.