Installing an HEI distributor is a great way to improve the performance of your vehicle’s engine. This distributor, which stands for High Energy Ignition, offers a hotter spark which results in better combustion and improved performance. However, the process can be daunting to many car enthusiasts. In this article, we will guide you through the process of wiring an HEI distributor by providing a wiring diagram and answering frequently asked questions.
What is an HEI distributor?
The HEI distributor is an ignition system that was introduced in the 1970s by General Motors. It replaced the old-style distributor that relied on contact points to deliver a spark to the spark plugs. HEI distributors use an electronic module to control the timing and spark intensity, which results in better performance and increased reliability.
What are the benefits of installing an HEI distributor?
There are several benefits to installing an HEI distributor:
| Benefits of HEI distributor | Description |
|---|---|
| Better performance | The HEI distributor delivers a hotter spark to the spark plugs, which results in better combustion and improved performance. |
| Increased reliability | The electronic module in the HEI distributor is much more reliable than the old-style contact points. |
| Simplified wiring | The HEI distributor requires only one wire to be connected to the ignition switch. |
How to wire an HEI distributor
Wiring an HEI distributor is not difficult, but it requires some attention to detail. Here is a step-by-step guide:
Step 1: Disconnect the battery
Before you start, make sure to disconnect the battery to prevent any electrical accidents.
Step 2: Remove the old distributor
Remove the old distributor by first removing the distributor cap and then the rotor. You may need to remove other parts, such as the distributor hold-down bolt, to take out the entire assembly.
Step 3: Install the new distributor
Install the new HEI distributor by positioning it in the same location as the old distributor. Make sure to align the rotor to the number one cylinder before installation.
Step 4: Connect the wiring
Connect the wiring to the HEI distributor by following this diagram:
| Wire color | Connection |
|---|---|
| Red | Connects to the ignition switch |
| Black | Connects to the negative battery terminal |
| Yellow | Connects to the positive side of the coil |
| White | Connects to the tachometer |
Step 5: Reconnect the battery
Once you have connected the wiring, reconnect the battery and start the engine to test the new ignition system.
FAQs
Q: What is the importance of connecting the HEI distributor to the ignition switch?
A: Connecting the HEI distributor to the ignition switch ensures that the ignition is turned off when the key is removed from the ignition. This is a safety feature that prevents the battery from draining, and the engine from running, when the car is not in use.
Q: Can I install an HEI distributor on any engine?
A: Yes, you can install an HEI distributor on any engine, as long as it is compatible with your vehicle’s make and model. You should consult your vehicle’s manual or a specialist to ensure that the distributor is the correct model for your engine.
Q: What are the common problems with an HEI distributor?
A: The most common problems with an HEI distributor are related to the electronic module or coil. These can cause a lack of spark or intermittent misfires. Regular maintenance and inspection can help prevent these issues.
Q: Can I install an HEI distributor myself?
A: Yes, you can install an HEI distributor yourself, as long as you have some basic knowledge of engine mechanics and electrical wiring. However, if you are unsure about any aspect of the installation, it is best to consult a professional mechanic.
Q: How can I improve the performance of my HEI distributor?
A: To improve the performance of your HEI distributor, you can upgrade the coil or use a performance ignition module. You can also adjust the timing to maximize performance.
Conclusion
Installing an HEI distributor is a great way to improve the performance and reliability of your engine. By following this step-by-step guide and using the provided wiring diagram, you can easily wire an HEI distributor yourself. Remember to always take safety precautions and consult a professional if you have any doubts or questions.
