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The RB20DET engine has gained a reputation among car enthusiasts for its impressive performance capabilities, especially when considering the potential for achieving 280-320 horsepower with stock internals. This article explores the methods and modifications that RB20DET owners employ to unlock this power while maintaining the reliability of their engines.
Understanding the RB20DET Engine
The RB20DET is a 2.0-liter inline-six engine produced by Nissan. Known for its robust design and turbocharging capabilities, it has become a favorite among tuners and racers. The engine features a DOHC setup and is often praised for its ability to handle power increases without needing extensive internal modifications.
Power Goals: Achieving 280-320 HP
Many RB20DET owners set their sights on the 280-320 horsepower range. This target is achievable with a combination of tuning, supporting modifications, and proper maintenance. Below are the key factors that contribute to reaching these power levels.
1. Turbocharger Upgrades
One of the most significant upgrades for increasing horsepower is the turbocharger. While the stock turbo can support moderate power increases, many owners opt for larger turbos to maximize airflow and boost pressure.
- Upgrading to a T3/T4 hybrid turbo.
- Installing a larger intercooler for better cooling efficiency.
2. Fuel System Enhancements
To support higher horsepower, the fuel system must be capable of delivering adequate fuel flow. Upgrades in this area are crucial for maintaining the air-fuel ratio.
- Upgrading to larger fuel injectors (e.g., 550cc or 740cc).
- Installing a high-flow fuel pump.
3. Engine Management and Tuning
Proper tuning is essential for extracting maximum performance from the RB20DET. A standalone engine management system or an ECU reflash can optimize ignition timing and fuel delivery.
- Using a standalone ECU like the AEM or Haltech.
- Custom tuning on a dynamometer for precise adjustments.
Supporting Modifications for Reliability
While achieving higher horsepower is the goal, maintaining engine reliability is equally important. Several supporting modifications can help ensure that the RB20DET remains dependable.
1. Exhaust System Upgrades
A high-flow exhaust system reduces back pressure and improves exhaust flow, which is essential for turbocharged engines. This can lead to better performance and sound.
- Installing a larger diameter downpipe.
- Using a cat-back exhaust system for improved flow.
2. Cooling System Improvements
Heat management is critical when increasing horsepower. Upgrading the cooling system helps prevent overheating and maintains optimal operating temperatures.
- Installing a larger radiator.
- Using an aftermarket oil cooler.
3. Strengthening the Drivetrain
With increased power, the drivetrain components must also be able to handle the stress. Strengthening these parts is crucial for maintaining reliability during spirited driving.
- Upgrading to a stronger clutch.
- Using a lightweight flywheel for quicker revs.
Real-World Examples of Success
Many RB20DET owners have successfully achieved their horsepower goals while keeping the engine’s stock internals intact. Here are a few real-world examples:
- A 1990 Nissan Skyline with a T3 turbo upgrade, custom ECU tuning, and a full exhaust system achieved 300 hp.
- A 1989 Nissan Silvia with upgraded fuel injectors and a larger intercooler reached 280 hp on the stock internals.
Conclusion
The RB20DET engine is a versatile powerhouse that can achieve impressive horsepower figures with the right modifications and tuning. By focusing on turbo upgrades, fuel system enhancements, and proper tuning, owners can reliably reach the 280-320 hp range while keeping the stock internals intact. With careful planning and execution, the RB20DET can provide thrilling performance without sacrificing reliability.