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The Datsun 240Z is a classic sports car that has captured the hearts of many enthusiasts. One way to enhance its performance is by installing a custom camshaft. This guide will walk you through the steps necessary to boost your Datsun 240Z’s power by 20 horsepower.
Understanding the Camshaft
A camshaft is a crucial component in an engine that controls the timing and duration of the engine’s valve openings. Upgrading to a custom camshaft can lead to significant performance improvements by optimizing the engine’s airflow and combustion efficiency.
Tools and Materials Needed
- Custom camshaft
- Socket set
- Torque wrench
- Engine oil
- Camshaft installation tool
- Gasket sealant
- Shop manual for Datsun 240Z
Preparation Steps
Before starting the installation, ensure that you have a clean workspace and all the necessary tools and materials ready. Follow these preparation steps:
- Disconnect the battery to prevent any electrical issues.
- Remove any accessories that may obstruct access to the engine, such as the air cleaner and intake manifold.
- Drain the engine oil to prevent spills during the installation.
Removing the Old Camshaft
To install the new camshaft, you must first remove the old one. Follow these steps:
- Remove the valve cover by unscrewing the bolts and gently lifting it off.
- Take off the timing chain cover to access the camshaft.
- Remove the timing chain and sprocket, noting their positions for reinstallation.
- Unscrew the camshaft bearing caps and carefully lift the old camshaft out of the engine block.
Installing the Custom Camshaft
With the old camshaft removed, it’s time to install the custom camshaft. Here’s how:
- Apply a thin layer of engine oil to the bearings of the new camshaft.
- Carefully align the new camshaft with the bearing journals and gently place it into the engine block.
- Reinstall the camshaft bearing caps and torque them to the specifications provided in the shop manual.
- Reattach the timing chain and sprocket, ensuring they are aligned correctly.
Reassembling the Engine
Once the custom camshaft is installed, it’s time to reassemble the engine. Follow these steps:
- Replace the timing chain cover and secure it with bolts.
- Install the valve cover with a new gasket or sealant to prevent leaks.
- Reattach any accessories that were removed during the preparation phase.
- Fill the engine with fresh oil and reconnect the battery.
Testing the Installation
After reassembling the engine, it’s essential to test the installation:
- Start the engine and let it idle for a few minutes, checking for any leaks or unusual noises.
- Take the car for a short test drive to assess its performance.
- Monitor the engine’s temperature and oil pressure during the test drive.
Conclusion
Installing a custom camshaft in your Datsun 240Z can significantly enhance its performance by increasing horsepower. By following this step-by-step guide, you can successfully complete the installation and enjoy the benefits of improved engine efficiency and power. Always refer to the shop manual for specific torque specifications and procedures.