Table of Contents
Installing a Cometic head gasket on your turbocharged Subaru can lead to significant performance gains. Many enthusiasts have reported achieving up to 50 horsepower increases with this modification. In this article, we will explore the steps involved in the installation process, the benefits of using a Cometic head gasket, and tips for ensuring a successful upgrade.
Understanding Cometic Head Gaskets
Cometic head gaskets are designed for high-performance applications. They offer several advantages over factory gaskets, including:
- Improved sealing capabilities
- Higher resistance to blowouts
- Better thermal conductivity
- Customization options for thickness and material
Benefits of Installing a Cometic Head Gasket
Upgrading to a Cometic head gasket can provide numerous benefits, especially for turbocharged engines. Some of the key advantages include:
- Increased Power: Achieving up to 50 horsepower gains.
- Enhanced Reliability: Reduces the risk of head gasket failure under high boost conditions.
- Better Engine Efficiency: Improved sealing leads to better combustion and efficiency.
- Custom Fit: Options for thickness allow for tuning and adjustments.
Tools and Materials Needed
Before starting the installation, gather the following tools and materials:
- Torque wrench
- Socket set
- Engine hoist (if necessary)
- Cometic head gasket
- New head bolts
- Gasket scraper
- Cleaning solvent
- Rags
Step-by-Step Installation Process
Step 1: Preparation
Start by preparing your workspace. Ensure you have ample lighting and all tools within reach. Disconnect the battery and drain the engine coolant.
Step 2: Remove the Engine Components
Remove the necessary components to access the head gasket. This typically includes:
- Intake manifold
- Exhaust manifold
- Turbocharger (if applicable)
- Valve covers
- Timing belt (if needed)
Step 3: Remove the Cylinder Head
Carefully unbolt the cylinder head from the engine block. Follow the manufacturer’s specifications for torque sequences to avoid warping the head.
Step 4: Clean the Surfaces
Use a gasket scraper and cleaning solvent to remove any residue from the engine block and cylinder head. Ensure the surfaces are smooth and free of debris.
Step 5: Install the Cometic Head Gasket
Place the new Cometic head gasket onto the engine block. Ensure that it is aligned correctly with the bolt holes and coolant passages.
Step 6: Reinstall the Cylinder Head
Carefully position the cylinder head back onto the engine block. Reinstall the head bolts and follow the specified torque pattern and specifications to secure the head properly.
Step 7: Reassemble Engine Components
Reinstall all previously removed components, including the intake and exhaust manifolds, turbocharger, and valve covers. Ensure all connections are secure.
Step 8: Final Checks
Reconnect the battery, refill the engine coolant, and check for any leaks. Start the engine and allow it to reach operating temperature while monitoring for any issues.
Tips for a Successful Installation
To ensure a successful installation of your Cometic head gasket, consider the following tips:
- Follow the manufacturer’s instructions carefully.
- Use new head bolts for optimal sealing.
- Double-check torque specifications.
- Inspect the cylinder head for warping before installation.
- Take your time during the cleaning process.
Conclusion
Installing a Cometic head gasket can significantly enhance the performance of your turbocharged Subaru. By following the steps outlined in this guide and taking the necessary precautions, you can achieve impressive horsepower gains and improve the overall reliability of your engine. Happy tuning!