Common Issues When Installing a Holset Hx35 Turbo on Your Grand National and How to Fix Them

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The Holset HX35 turbo is a popular upgrade for Grand National enthusiasts looking to boost performance. However, the installation process can present various challenges. In this article, we will explore common issues faced during the installation of the Holset HX35 turbo and provide solutions to ensure a smooth upgrade.

Understanding the Holset HX35 Turbo

The Holset HX35 turbocharger is known for its efficiency and ability to support higher horsepower levels. It is essential to understand its specifications and compatibility with the Grand National to maximize performance.

Common Installation Issues

  • Turbo Fitment Problems
  • Oil Supply Issues
  • Boost Control Complications
  • Exhaust Leak Concerns
  • Intercooler Compatibility

1. Turbo Fitment Problems

One of the primary issues when installing the Holset HX35 turbo is fitment. The turbo may not align correctly with the existing mounting points, leading to installation difficulties.

Solution

To address fitment issues, consider the following:

  • Use adjustable mounting brackets to ensure proper alignment.
  • Check for any obstructions in the engine bay that may hinder installation.
  • Consult with a professional if custom modifications are necessary.

2. Oil Supply Issues

Another common problem is ensuring adequate oil supply to the turbo. Insufficient oil flow can lead to turbo failure.

Solution

To prevent oil supply issues:

  • Verify that the oil feed line is properly connected and free of obstructions.
  • Consider upgrading the oil pump for increased flow.
  • Use high-quality oil and regularly check oil levels.

3. Boost Control Complications

Proper boost control is crucial for performance. Some users experience difficulties with boost levels after installing the HX35 turbo.

Solution

To address boost control issues:

  • Install an aftermarket boost controller for better management.
  • Check for vacuum leaks that may affect boost pressure.
  • Ensure the wastegate is functioning correctly and is properly adjusted.

4. Exhaust Leak Concerns

Exhaust leaks can significantly impact performance and lead to turbo damage. Ensuring a tight seal during installation is vital.

Solution

To prevent exhaust leaks:

  • Inspect all exhaust connections and gaskets for wear.
  • Use high-temperature silicone sealant on connections if necessary.
  • Tighten all bolts to the manufacturer’s specifications.

5. Intercooler Compatibility

The HX35 may require modifications to the intercooler setup. Incompatibility can lead to performance issues.

Solution

To ensure intercooler compatibility:

  • Evaluate the size and fitment of the intercooler with the new turbo.
  • Consider upgrading to a larger intercooler if necessary.
  • Ensure all piping is securely connected and leak-free.

Conclusion

Installing a Holset HX35 turbo on your Grand National can significantly enhance performance. By being aware of common issues and their solutions, you can ensure a successful installation and enjoy the benefits of your upgrade.