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The RB20DET and RB26DETT engines are iconic in the Nissan performance community. For enthusiasts looking to maximize their 240SX’s potential, swapping from an RB20DET to an RB26DETT can yield significant power gains. This article will explore the benefits of this swap, the costs involved, and what you need to know to make the transition seamless.
Understanding the RB20DET and RB26DETT Engines
The RB20DET is a 2.0-liter inline-six engine, while the RB26DETT is a 2.6-liter inline-six engine. Both engines are known for their robust performance and tuning potential. However, the RB26DETT stands out due to its higher displacement and twin-turbo setup, offering a substantial increase in horsepower and torque.
Power Gains from the Swap
One of the most compelling reasons for swapping to an RB26DETT is the power gains. Here’s a breakdown of the expected performance improvements:
- RB20DET: Approximately 200-220 horsepower and 200 lb-ft of torque.
- RB26DETT: Approximately 280-320 horsepower and 260 lb-ft of torque, with potential for much more with tuning.
This increase in power can dramatically enhance the driving experience, making the 240SX more competitive on the track and more enjoyable on the street.
Cost Breakdown of the Swap
Swapping the RB26DETT into a 240SX involves various costs. Here’s a detailed breakdown:
- Engine Purchase: $3,000 – $5,000 (depending on condition and source).
- Transmission: $1,000 – $2,000 (RB26DETT transmission or compatible options).
- Wiring Harness: $500 – $1,000 (custom or OEM options).
- ECU: $500 – $1,000 (standalone or modified stock ECU).
- Labor Costs: $1,500 – $3,000 (if using a professional shop).
- Miscellaneous Parts: $500 – $1,500 (mounts, exhaust, cooling system upgrades).
In total, the swap can range from approximately $7,000 to $14,000, depending on choices made throughout the process.
Essential Components for the Swap
When planning the RB26DETT swap, several essential components must be considered to ensure a successful installation:
- Engine Mounts: Custom or aftermarket mounts are necessary to fit the RB26DETT into the 240SX chassis.
- Transmission Adapter: An adapter may be required to connect the RB26DETT transmission to the 240SX driveshaft.
- Cooling System: Upgraded radiators and fans to handle the increased heat generated by the RB26DETT.
- Fuel System: Upgraded fuel pumps and injectors to support higher horsepower levels.
- Exhaust System: A custom exhaust system will be necessary to fit the RB26DETT.
Ensuring that these components are accounted for will help avoid delays and complications during the swap process.
Performance Tuning After the Swap
After completing the swap, tuning is crucial to maximize the performance of the RB26DETT. Here are some key points to consider:
- Dyno Tuning: A professional dyno tune will optimize the engine’s performance and ensure reliability.
- Boost Levels: Adjusting boost levels can significantly impact horsepower; however, this should be done carefully to avoid engine damage.
- Fuel Mapping: Proper fuel mapping is essential for achieving the best performance and efficiency.
Investing in a quality tuning service can unlock the full potential of the RB26DETT, providing a thrilling driving experience.
Conclusion
The RB20DET to RB26DETT swap in a 240SX is a popular choice for those looking to enhance performance. While the process involves a significant investment of time and money, the power gains and driving experience are well worth it. By understanding the costs, required components, and tuning options, enthusiasts can successfully undertake this exciting project and enjoy the benefits of a high-performance engine in their 240SX.