Installing a Lexus 2jz-gte into a 240sx: How It Compares to Rb Swaps in Power and Cost

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The Nissan 240SX has long been a favorite among car enthusiasts and tuners, particularly for its lightweight chassis and rear-wheel-drive layout. One of the most popular engine swaps for this vehicle has been the RB series from Nissan. However, the Lexus 2JZ-GTE engine, known for its robust power capabilities, has emerged as a compelling alternative. In this article, we will explore the process of installing a Lexus 2JZ-GTE into a 240SX and compare it to RB swaps in terms of power and cost.

Understanding the Engines

The RB series engines, particularly the RB25 and RB26, are well-known for their tuning potential and performance. They have been successfully swapped into many vehicles, including the 240SX. On the other hand, the 2JZ-GTE engine, found in the Toyota Supra, is celebrated for its durability and power output. Understanding the specifications of both engines is essential for making an informed decision.

  • RB25DET: 2.5L inline-six, approximately 250 hp, strong aftermarket support.
  • RB26DETT: 2.6L inline-six, approximately 280 hp, legendary tuning capabilities.
  • 2JZ-GTE: 3.0L inline-six, approximately 276 hp, known for its reliability and power potential.

Installation Process

Installing either engine into a 240SX requires careful planning and execution. Both swaps involve similar steps, but there are distinct differences in the installation process.

RB Swap Process

The RB swap typically involves the following steps:

  • Remove the stock KA24DE engine and transmission.
  • Install RB engine mounts and transmission crossmember.
  • Connect the RB wiring harness to the 240SX chassis.
  • Install an aftermarket intercooler and piping.
  • Modify the exhaust system to fit the RB turbo setup.

2JZ-GTE Swap Process

The installation of a 2JZ-GTE engine involves similar steps, but with some unique considerations:

  • Remove the stock KA24DE engine and transmission.
  • Install custom engine mounts specific to the 2JZ-GTE.
  • Utilize a 2JZ wiring harness and ECU.
  • Install a compatible turbo and intercooler setup.
  • Modify the exhaust system to accommodate the 2JZ turbo configuration.

Power Comparisons

When comparing the power output of both engines, the 2JZ-GTE generally has an advantage due to its larger displacement and robust design. However, both engines can be tuned for significant power increases.

  • RB25DET: Easily tuned to 300+ hp with basic modifications.
  • RB26DETT: Capable of reaching 600+ hp with extensive tuning.
  • 2JZ-GTE: Known to exceed 800 hp with the right modifications and tuning.

Cost Analysis

Cost is a significant factor when considering an engine swap. The expenses involved can vary greatly depending on the condition of the engines, parts needed, and labor costs.

  • RB25DET Swap: Estimated costs range from $3,000 to $5,000, including the engine, transmission, and necessary parts.
  • RB26DETT Swap: Typically costs between $5,000 and $8,000 due to the engine’s rarity and demand.
  • 2JZ-GTE Swap: Costs can range from $4,000 to $7,000, depending on whether a complete swap kit is used.

Conclusion

Both the RB and 2JZ-GTE swaps offer unique advantages for the Nissan 240SX. The choice between them often comes down to personal preference, budget, and desired power levels. While the RB engines have a strong following and proven performance, the 2JZ-GTE is hard to ignore for its power potential and reliability. Ultimately, each swap can lead to an exciting and powerful build, making the 240SX an even more thrilling vehicle to drive.