Supporting Mods for a 750 Hp Is300 2jz-gte Swap: Clutch, Transmission, and Drivetrain

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The Toyota IS300 is a popular platform for performance enthusiasts, especially when it comes to engine swaps. One of the most sought-after swaps is the 2JZ-GTE from the Toyota Supra. With the potential to produce over 750 horsepower, this engine requires careful consideration of supporting modifications to ensure reliability and performance. In this article, we will discuss the essential supporting mods for a 750 HP IS300 2JZ-GTE swap, focusing on the clutch, transmission, and drivetrain components.

Clutch Upgrades

When swapping in a powerful engine like the 2JZ-GTE, upgrading the clutch is crucial to handle the increased torque and horsepower. A stock clutch will likely slip under heavy load, leading to premature failure and poor performance.

  • High-Performance Clutch Kit: Look for a clutch kit specifically designed for high horsepower applications. Brands like Exedy and ACT offer kits that can handle the demands of a 750 HP setup.
  • Clutch Disc Material: Choose a disc made from high-friction materials such as ceramic or Kevlar. These materials provide better grip and heat resistance.
  • Pressure Plate Upgrade: A stronger pressure plate will increase clamping force, reducing the chances of slippage. Ensure it is compatible with your chosen clutch disc.
  • Flywheel: Consider a lightweight flywheel to reduce rotational mass, improving throttle response and acceleration.

Transmission Considerations

The transmission is another critical component that must be upgraded to handle the power generated by the 2JZ-GTE. The stock IS300 transmission may not withstand the stress of a 750 HP engine.

  • Transmission Choice: Many enthusiasts opt for the Getrag V160 transmission from the Supra, known for its strength and durability. Alternatively, a built R154 can also be a viable option.
  • Short Shifter: Installing a short shifter can improve shift times and overall driving experience, making it easier to handle the increased power.
  • Transmission Mounts: Upgraded transmission mounts will help reduce movement during hard launches, ensuring better power transfer to the wheels.
  • Cooling Solutions: Consider adding a transmission cooler to prevent overheating during high-performance driving.

Drivetrain Upgrades

The drivetrain is responsible for transferring power from the engine to the wheels. With a significant power increase, upgrading various components is essential to prevent failures and ensure optimal performance.

  • Driveshaft: Upgrade to a stronger driveshaft that can handle the increased torque. A one-piece aluminum driveshaft can reduce weight and improve efficiency.
  • Differential: Consider upgrading to a limited-slip differential (LSD) to improve traction during acceleration. Options like the Toyota 8.8 or a custom-built unit can be effective.
  • Axles: Heavy-duty axles are necessary to withstand the added power without breaking. Brands like DSS offer upgraded axles designed for high-horsepower applications.
  • Suspension Components: Upgrading suspension components, such as control arms and bushings, can improve handling and stability under high power.

Conclusion

Successfully swapping a 2JZ-GTE into an IS300 and achieving 750 HP requires careful consideration of supporting modifications. Upgrading the clutch, transmission, and drivetrain components is essential to ensure reliability and performance. By investing in high-quality parts and upgrades, you can enjoy the full potential of your IS300 while maintaining the integrity of the vehicle.