Convert Your Generator to Propane for DIY Power Generation

Table of Contents

1. Introduction
2. Converting a Regular Generator to Use LP Gas
3. Retrofitting the Carburetor
4. Dealing with Offset Bolt Holes
5. Modifying the Linkage for the Governor
6. Comparing the Ventilation Tubes of the Original and LP Carburetors
7. Using Tygon Tubing for the Experiment
8. The Importance of a Regulator for LP Gas Conversions
9. Fittings and Adapters for the Conversion
10. Testing the Conversion with Soapy Water
11. Running the Generator with LP Gas
12. Adjusting the Flow and Troubleshooting
13. Running the Generator on Dual Fuel
14. Conclusion

Converting a Generator to Use LP Gas

Converting a regular generator to use LP gas can be a cost-effective alternative to buying an LP conversion kit. In this article, we will explore the process of retrofitting a carburetor with an on-demand LP fuel regulator. This conversion can be done with a few simple tools and materials and offers the flexibility of running the generator on both gasoline and LP gas. We will discuss the steps involved in this conversion, including dealing with offset bolt holes, modifying the governor linkage, and the importance of using a regulator for safe operation. Additionally, we will address troubleshooting and provide tips for adjusting the flow to optimize performance. By the end of this article, you will have a better understanding of how to convert your generator to use LP gas and enjoy the benefits of this alternative fuel source.

1. Introduction

The use of LP (liquefied petroleum) gas as a fuel source for generators offers several advantages. LP gas is typically less expensive than gasoline, making it a cost-effective option for long-term use. It also burns cleaner, producing fewer emissions and reducing the environmental impact. Converting a regular generator to use LP gas provides the flexibility to switch between fuels, ensuring a continuous power supply even in times of fuel shortage or price fluctuations. In the following sections, we will walk through the process of converting a generator to use LP gas and address any challenges that may arise along the way.

2. Converting a Regular Generator to Use LP Gas

The first step in converting a regular generator to use LP gas is to retrofit the carburetor. The original carburetor needs to be replaced with one that has an on-demand LP fuel regulator built in. This allows for a controlled flow of LP gas to the engine, ensuring efficient combustion. By retrofitting the carburetor, you can take advantage of the benefits of LP gas without the need for expensive conversion kits.

3. Retrofitting the Carburetor

To retrofit the carburetor, you will need to find a replacement carburetor that is compatible with the size and model of your generator's engine. Look for a carburetor that already has the on-demand LP fuel regulator built in. This will simplify the installation process and ensure proper functionality. While it is possible to make an adapter to fit the new carburetor onto the existing bolt holes, it is recommended to choose a carburetor that aligns with the original bolt hole configuration to avoid any complications.

4. Dealing with Offset Bolt Holes

One potential challenge when retrofitting the carburetor is dealing with offset bolt holes. The new carburetor may have bolt holes that are slightly different from the original carburetor. While this may not be an issue when using LP gas, it can cause problems if switching back to gasoline. In such cases, it may be necessary to modify the mounting bracket or find an alternative solution to ensure a secure fit.

5. Modifying the Linkage for the Governor

Another consideration when retrofitting the carburetor is modifying the linkage for the governor. The throttle on the governor controls the engine speed based on the load. It is important to ensure that the new carburetor's throttle linkage aligns with the original configuration. This may require adjusting the tension of the governor spring or making other modifications to ensure smooth operation.

6. Comparing the Ventilation Tubes of the Original and LP Carburetors

When retrofitting the carburetor, it is important to compare the ventilation tubes of the original and LP carburetors. The original carburetor may have a ventilation tube that directs the positive crankcase ventilation directly into the carburetor throat. In contrast, the LP carburetor may have an injection port that comes in between the choke and throttle plate. Understanding the differences in these ventilation tubes is crucial to ensure proper fuel delivery and performance.

7. Using Tygon Tubing for the Experiment

For the purpose of this conversion experiment, we will be using Tygon tubing to connect the LP regulator to the carburetor. Tygon tubing is flexible and resistant to chemicals, making it suitable for LP gas applications. It is important to ensure a tight and secure connection between the tubing and the spuds or fittings to prevent any leaks.

8. The Importance of a Regulator for LP Gas Conversions

When converting a generator to use LP gas, it is essential to use a regulator. The regulator controls the flow of LP gas to the engine, ensuring a consistent and controlled supply. It also serves as a safety measure by shutting off the gas flow when the engine is not running. This prevents the accumulation of LP gas and reduces the risk of accidents or leaks.

9. Fittings and Adapters for the Conversion

To complete the LP gas conversion, you will need various fittings and adapters. These include tapered fittings, spuds, and flare fittings. It is important to choose fittings that are compatible with the tubing and ensure a secure and leak-free connection. Using thread tape or sealant can help further enhance the seal.

10. Testing the Conversion with Soapy Water

Before running the generator with LP gas, it is crucial to test the connections for leaks. One way to do this is by using soapy water. Apply the soapy water to the connections and observe if any bubbles form, indicating a leak. If bubbles are present, it is necessary to tighten the connections or make adjustments until a secure seal is achieved.

11. Running the Generator with LP Gas

Once the conversion and testing are complete, it is time to run the generator with LP gas. Ensure that the ignition is on and the air cleaner is properly installed. Start the generator and observe its performance. It is normal for some adjustments to be necessary for optimal operation. This may include adjusting the tension of the governor spring or fine-tuning the flow rate using the regulator.

12. Adjusting the Flow and Troubleshooting

When running the generator with LP gas, it is important to adjust the flow rate and troubleshoot any issues that may arise. If the generator does not run smoothly, it may be due to inadequate fuel delivery or improper adjustments. Check the regulator and connections for any signs of leaks or malfunctions. Adjust the flow rate as needed to achieve optimal performance.

13. Running the Generator on Dual Fuel

With the LP gas conversion complete, it is possible to run the generator on dual fuel. This provides the flexibility to switch between gasoline and LP gas based on availability and preference. By installing a valve and separate hose clamp, the generator can be easily switched from one fuel source to another. This ensures a continuous power supply and maximizes the benefits of both fuel options.

14. Conclusion

Converting a regular generator to use LP gas offers numerous advantages in terms of cost, environmental impact, and fuel flexibility. By retrofitting the carburetor with an on-demand LP fuel regulator, it is possible to harness the benefits of LP gas without the need for expensive conversion kits. While the process may involve some modifications and adjustments, the end result is a generator that can run on both gasoline and LP gas, providing a reliable and efficient power source. With proper installation, testing, and maintenance, you can enjoy the benefits of LP gas for your generator and be prepared for any situation.