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The 12-valve Cummins engine is well-known for its reliability and performance capabilities. Upgrading to a 10mm Garrett GT37 turbo can significantly enhance the power output and efficiency of this engine. In this article, we will explore the installation process, the expected power gains, and the overall impact of this upgrade.
Understanding the Garrett GT37 Turbo
The Garrett GT37 turbocharger is designed to provide higher airflow and boost pressure, making it an ideal choice for those looking to maximize the performance of their 12-valve Cummins. With its larger compressor wheel and efficient design, the GT37 allows for better power delivery across the RPM range.
Benefits of Upgrading to a 10mm Turbo
Upgrading to a 10mm Garrett GT37 turbo offers several benefits:
- Increased Power Output: The most significant advantage is the potential for increased horsepower and torque.
- Improved Throttle Response: A larger turbo can enhance throttle response, making the vehicle feel more responsive.
- Enhanced Fuel Efficiency: With better airflow, the engine can run more efficiently, potentially improving fuel economy.
- Better Tuning Options: A 10mm turbo provides more tuning flexibility for performance enthusiasts.
Installation Process
The installation of a 10mm Garrett GT37 turbo on a 12-valve Cummins requires careful planning and execution. Here’s a step-by-step guide to help you through the process:
Tools and Materials Needed
- 10mm Garrett GT37 Turbo
- Turbo mounting hardware
- Socket set and wrenches
- Torque wrench
- Intercooler piping
- Oil feed and drain lines
- Coolant lines (if applicable)
- Gaskets and seals
Step-by-Step Installation
Follow these steps to install the turbo:
- Prepare the Workspace: Ensure you have a clean and organized workspace with all necessary tools at hand.
- Remove the Old Turbo: Disconnect the oil feed and drain lines, intercooler piping, and any coolant lines. Unbolt the old turbo from the manifold and remove it.
- Install New Gaskets: Place new gaskets on the manifold and the turbo to ensure a proper seal.
- Mount the GT37 Turbo: Position the Garrett GT37 turbo onto the manifold and secure it with the provided hardware, ensuring to torque the bolts to the manufacturer’s specifications.
- Connect Oil Lines: Install the new oil feed and drain lines, ensuring there are no leaks.
- Attach Intercooler Piping: Connect the intercooler piping to the turbo and ensure all clamps are tight.
- Check All Connections: Double-check all connections, including coolant lines, to ensure everything is properly secured.
- Start the Engine: After installation, start the engine and check for any leaks or unusual noises.
Power Gains and Performance Expectations
After upgrading to a 10mm Garrett GT37 turbo, drivers can expect significant power gains. Here’s what you might see:
- Horsepower Increase: Many users report an increase of 100-150 horsepower, depending on supporting modifications.
- Torque Gains: Torque can also see substantial increases, providing better towing and hauling capabilities.
- Boost Pressure: The GT37 can typically achieve higher boost pressures, enhancing overall engine performance.
- Improved Engine Sound: The sound of a larger turbo can be more aggressive, appealing to many enthusiasts.
Considerations and Final Thoughts
While upgrading to a 10mm Garrett GT37 turbo offers many advantages, it’s important to consider the following:
- Supporting Modifications: To fully realize the potential of the new turbo, additional modifications such as upgraded injectors, intercoolers, and exhaust systems may be necessary.
- Tuning: A proper tune is essential to ensure the engine runs efficiently and safely with the new turbo.
- Maintenance: Regular maintenance and monitoring of turbo performance are crucial for longevity.
Upgrading to a 10mm Garrett GT37 turbo can significantly enhance the performance of your 12-valve Cummins. With the right installation and supporting modifications, you can enjoy increased power, improved efficiency, and an overall better driving experience.