How do you change distributor?
How to Replace a Distributor Cap and Rotor
- Locate the distributor cap. The distributor cap is located under the car’s hood.
- Unhook the clips and screws on the cap.
- Slide the rotor from the distributor housing.
- Orient the spark plugs to the new cap.
- Replace the cap.
- Test the car to ensure it is running smoothly.
What are the colors of the HEI distributor?
On a factory HEI, the primary coil leads will either be white and red, or yellow and red. The colors of the leads determine the direction the coil is wound, which determines its polarity. Whenever you are replacing a coil or distributor, it’s always a good idea to be sure to the ground clip is transferred from the old cap to the new.
How long has the HEI system been used?
The GM HEI system was used in GM vehicles for a approximately 20 years. It is a simple design using a magnetic trigger, electronic controller inside the cap, and a coil. A nice feature of the HEI is the coil is integrated right into the distributor cap, meaning no coil wire.
Where do the wires come from on a HEI system?
On most HEI’s, there are three wires that come from the base of the distributor and they plug into the cap. It’s a connector block and can’t be plugged in wrong. DISTRIBUTORS & HEI INSTALLATIONS Page 9 Identifying your HEI system There are several variations on the original High Energy Igni- tion (HEI) system.
What should the plug gap be for a HEI distributor?
Tip: When you have installed your HEI distributor, its best to widen the plug gap as well. Tip: You should run a new power wire that is getting a full 12 volts. Simply splicing into the existing lead is not getting maximum power to the ignition, as that is a resistance wire.
How many volts on a HEI distributor?
The HEI just uses 12 volts. If it’s wired like points it will work on 9 volts but has problems being consistent especially at higher RPMs. If this has the GM HEI module, a high speed miss is not uncommon, it’s just on it’s upper limit.
What is a “small cap HEI” distributor?
While the HEI cap houses the coil, the Smaller Dual-Power distributor utilizes an external coil . The smaller-cap distributor is capable of supplying excellent spark while retaining a stock-ish appearance. Because its reliability and the high-energy spark it delivered, it was – and still is – a staple-upgrade among many enthusiasts.
What is wire size from ignition to Hei?
When using HEI, the distributor requires a 12 volt feed. In order to achieve this the ballast resistor or the resistance wire must be removed from the circuit and replaced with a pure 12 gauge feed wire. This feed wire must be 12 gauge from the ignition switch to the bulkhead and then from the bulkhead to the HEI power terminal.