Chloe Zhang
The stock Corvair sender float is plastic, and it is an essential component of the fuel system in Corvair vehicles. Over time, these plastic floats can become damaged or fall off, leading to issues with the fuel gauge. As a result, some owners have opted to replace the plastic floats with unsinkable closed-cell solid foam floats or brass floats. However, it's important to note that the process of replacing the sender float can be complex and may require specialised tools and knowledge.
| Characteristics | Values |
|---|---|
| Part Number | CC02010P |
| Material | Plastic |
| Compatibility | Corvair cars |
| Function | Gas tank sender unit float |
| Installation | Requires removal of the old float and installation of the new one |
| Testing | Can be tested with an ohmmeter, reading 80-90 ohms when the tank is full and closer to zero when empty |
| Replacement | Plastic or brass floats can be replaced with unsinkable closed-cell solid foam floats |
| Modification | Cutting and welding may be required for proper fitment |
| Availability | Available from online retailers and forums |
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What You'll Learn
- Plastic floats are available for Corvairs, but some owners prefer to use brass floats
- Plastic floats are also used in other vehicles, including Ford trucks
- The Corvair's float can be replaced with a closed-cell solid foam float from newer cars
- The fuel gauge circuit in the Corvair is relatively simple, with power coming from the fuse block
- The sending unit in the Corvair can be replaced without removing the crossmember
Plastic floats are available for Corvairs, but some owners prefer to use brass floats
Owners of classic cars like the Corvair are often faced with the challenge of finding suitable replacement parts for their vehicles. One such component is the fuel sender float, which plays a crucial role in accurately measuring the fuel level in the tank. While plastic floats are readily available for Corvairs, some owners express a preference for brass floats or other alternatives.
Plastic floats are a popular choice for Corvair owners due to their accessibility and affordability. They are designed to fit the fuel sender unit of Corvair models, ensuring a precise reading of the fuel level. However, some owners have reported issues with the plastic floats, such as leakage or the float falling off, which can lead to inaccurate fuel gauge readings.
In contrast, brass floats are known for their durability and longevity. They are less susceptible to damage or leakage, making them a preferred option for those seeking a long-lasting solution. Brass floats are also available with a foam-filled design, which further enhances their reliability by eliminating the possibility of sinking or leaking. These foam-filled brass floats can be purchased online and have proven to be a successful replacement for Corvair owners.
The process of replacing the fuel sender float in a Corvair is not without its challenges. It typically involves jacking up the front of the car, removing the gas tank, and carefully installing the new float. Some owners have shared their experiences and provided detailed instructions on online forums, offering valuable insights to fellow enthusiasts.
While the choice between plastic and brass floats ultimately depends on personal preference and practicality, it is essential to consider the advantages and limitations of each option. Plastic floats offer convenience and ease of installation, while brass floats excel in durability and long-term performance. By weighing these factors, Corvair owners can make an informed decision that aligns with their specific needs and ensures the optimal functioning of their cherished vehicles.
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Plastic floats are also used in other vehicles, including Ford trucks
Plastic floats are used in vehicles to measure the level of fuel in the gas tank. They are a component of the fuel sender unit, which sends information to the gas gauge. While brass floats are also used, plastic floats are favoured by some due to the possibility of leaks at the solder joints in two-piece brass floats.
Plastic floats were used in Corvairs, and these floats were also used in other vehicles, including Ford trucks. One user on the Corvair Center Forum noted that they had seen these plastic floats in 90s Ford trucks and a Freightliner truck.
Users on the Ford Trucks Forum have also discussed the use of plastic floats in their vehicles. One user mentioned replacing the original sending unit in their aft tank with a replacement that included a plastic float. They noted that the plastic float developed a pinhole leak, causing the float to fill with gas and fall to the bottom of the tank. Another user considered purchasing a fuel sending unit with a plastic float made by a brand called "Spectra", but was concerned about the size of the hose fitting.
While some Ford trucks may use plastic floats, it is not clear how widespread their use is. Some Ford trucks use brass floats, as evidenced by forum users discussing their experiences with these floats. It is possible that Ford has used different types of floats in their trucks over the years or offered different options for their customers.
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The Corvair's float can be replaced with a closed-cell solid foam float from newer cars
The Corvair is a car model that was produced between 1960 and 1969. The fuel sender unit float in the Corvair is typically made of plastic or brass. While the plastic float is durable and can last for years, it may need to be replaced at some point.
One option for replacing the Corvair's float is to use a closed-cell solid foam float from newer cars. Closed-cell foam is known for its durability, lightweight structure, and excellent buoyancy. It is commonly used in water-based applications such as foam floats, boat cushions, and safety pads. Closed-cell foam has tiny, sealed air pockets that prevent water absorption, ensuring that it remains buoyant even after prolonged use.
When replacing the float in the Corvair, it is important to consider the dimensions of the original float to ensure a proper fit. The outer diameter (OD) of the float body and the sender arm groove should match those of the original float. Additionally, it is necessary to cut and weld the rod in the correct position to allow for a secure connection.
One advantage of using a closed-cell solid foam float is its resistance to leakage and sinking. The foam-filled brass float option has been reported to work well and last for over a year. This type of float can be purchased online through platforms such as eBay, offering convenience and accessibility for replacement parts.
In conclusion, the Corvair's float can be successfully replaced with a closed-cell solid foam float from newer cars. By following the necessary installation steps and ensuring proper dimensions, the replacement float can provide reliable performance and enhance the overall functionality of the fuel sender unit in the Corvair.
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The fuel gauge circuit in the Corvair is relatively simple, with power coming from the fuse block
The fuel gauge uses a balanced bridge design to prevent needle movement as the car's system voltage changes for better accuracy. The ground wire for the sender may have a bad connection, causing the gauge to read fuller than the tank actually is. A poor connection within a connector will act like the variable resistor within the fuel tank sending unit, limiting current flow and preventing a full meter deflection at the gauge.
The fuel sender is easy to test with a multi-meter set to 200Ω. Touch the black lead to the sender housing and the red lead to the sender post, then move the float up and down to see the ohms on empty and full. If you do not have the sender out of the fuel tank, you can pick up the signal from the tan wire that runs from the tank to the fuse box.
The floats that were used in Corvairs were also used in a lot of other vehicles, including 90s Ford trucks and Freightliner trucks.
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The sending unit in the Corvair can be replaced without removing the crossmember
Another user, who has swapped many tanks, confirms that removing the crossmember is not necessary. They recommend using the Clark's tool, which makes the process much easier.
If the sender tube is plugged, it could be due to a build-up of debris, rust, or a failed sealer. The entire unit may need to be replaced.
To replace the sending unit, there is a special tool to remove the locking ring. However, some people use a blade screwdriver and a hammer to drive the ring counter-clockwise until it releases. Greasing the new O-ring is also recommended. It is important to ensure that all the flanges on the ring go under the tank ring fingers, and that the rubber hoses at the sending unit and back by the engine are secure.
The floats in Corvairs are typically made of plastic or brass, but some owners have replaced them with unsinkable closed-cell solid foam floats from newer cars. One owner reported that they bought a sender from a 1956 Chevy and cut/bent it to shape for their 1960 Corvair, and it worked well for 14 years.
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Frequently asked questions
The stock Corvair sender float is made of plastic. However, some variants are made of brass.
To replace the stock Corvair sender float, jack up the front right of the car and remove the gas tank. Then, drain the gasoline, pop off the old float from the wire arm clip, and install the replacement.
You can buy a stock Corvair sender float from California Corvair Parts.
