Trystan Casey
The Rochester Quadrajet carburetor is a high-performance carburetor that requires a steady and plentiful supply of fuel. It is recommended to use an electric fuel pump to ensure a consistent fuel supply and prevent engine issues. Various electric fuel pumps are available in the market, such as those from Carter, Holley, and Edelbrock, which offer different features like quiet operation, ease of mounting, and different volume options. When choosing an electric fuel pump for a Rochester carburetor, it is essential to consider factors such as the carburetor's fuel pressure requirements, the pump's GPH rating, and the compatibility of the pump with the specific Rochester carburetor model.
| Characteristics | Values |
|---|---|
| Brand | Carter, Holley, Edelbrock, Mr Gasket, Aeromotive |
| Pump Type | Universal Rotary Vane, Inline, Solenoid |
| Compatibility | Rochester 2GC, 2G, 2GE, 2GV, 4G, B, BC, BV, H, HV, Ford Motorcraft |
| Pump Specifications | 21-34 GPH rating, 5-7 psi pressure, 3/4" accelerator pump cup |
| Additional Features | Quiet, easy to mount and wire, includes cutoff switch for oil pressure |
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What You'll Learn
Electric fuel pump options
Carter is a popular choice for electric fuel pumps, offering a range of different volume pumps that are suitable for Rochester carburetors. One notable feature of Carter pumps is their solenoid-type pump, which is known for being quiet and easy to mount and wire. Carter also offers universal rotary vane electric fuel pumps that are compatible with certain orders. Additionally, their pumps are designed to work with today's fuel that contains alcohol or ethanol.
Another option is Holley, which offers electric fuel pumps that are compatible with Rochester carburetors. Holley pumps have been praised for their precision and quiet operation.
Mr Gasket is another brand that provides electric fuel pumps, which have been used in combination with Rochester carburetors.
Precision is a brand that offers a universal external electric fuel pump with a rating of 21 to 34 GPH. This pump has been described as super quiet and is worth considering for its performance and noise reduction.
When choosing an electric fuel pump, it is important to consider factors such as compatibility, performance, ease of installation, and noise levels. It is also advisable to read reviews and compare different options to find the best value for your specific requirements.
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$21.99
Rochester B accelerator pump testing
The Rochester B accelerator pump was used in carburettors for cars up to 1956 and trucks up to 1962. These pumps originally featured a leather cup, which is not replaceable. Later Rochester B, BC, and BV carburettors used a replaceable cup.
When testing the Rochester B accelerator pump, it is important to first identify which type of pump you have. The earlier version has a flat shaft, while the later version has a round shaft. The same accelerator pump fits all of the early 1-barrel carburettors.
If you are experiencing issues with fuel feeding back into the well, it may be that the check ball is not sealing properly. To fix this, lightly tap the ball with a brass punch to seat it. If the ball is coming out of the hole completely, you may need to adjust the return spring to keep it in place.
It is recommended to have a steady and plentiful supply of fuel for the Rochester B accelerator pump to perform its best. A fuel pressure of 6-7 lbs is suggested for most combinations.
There are several electric fuel pump options available for Rochester carburettors. Some popular brands include Carter, Holley, Edelbrock, and Mr Gasket. Carter offers a "solenoid" type pump that is quiet and easy to mount and wire. It is important to consider the GPH and PSI ratings of the electric fuel pump when selecting a replacement.
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Rochester B accelerator pump springs
The Rochester B carburettor used two styles of accelerator pumps over the years. The first style has a flat shaft and was used in all early 1-barrel carburettors, including cars up to 1956 and trucks up to 1962. These pumps were originally a leather cup type, which is ethanol-ready, and the current accelerator pumps of this type are still made with leather cups.
The second style has a round shaft, with two different sizes available: AP327 (2.851) and AP462 (2.776). The leather cup in some of the Rochester B's with the round shaft cannot be replaced with a rubber cup, and in these cases, a complete accelerator pump must be purchased.
The accelerator pump assembly is illustrated on some websites, which show the return and delayer springs on the two types of Rochester B carburettors. The return spring is present on all Rochester B carburettors and is placed under the accelerator pump to help return the pump to the top position. The delayer spring is placed over the pump stem and is found on both the round accelerator pump stem (late type) and the flat accelerator pump stem (early type) carburettors. The delayer spring helps the accelerator pump move in a smoother manner, rather than a quick jerk.
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Rochester 4G carburettor pump assembly
The Rochester 4G carburettor pump assembly is designed to withstand today's fuel with alcohol or ethanol. It comes in two sizes: 21/32" and 3/4". The 3/4" pump cup is used in large bore 2-barrel Rochester 2G, 2GC, 2GE, 2GV, and 4G carburetors.
There are a variety of electric fuel pumps that are compatible with Rochester carburetors. For example, Carter offers a range of electric fuel pumps that are compatible with Rochester carburetors, including the Universal Rotary Vane Electric Fuel Pump and the "solenoid" type pump. Holley and Mr Gasket also offer electric fuel pumps that are compatible with Rochester carburetors.
When choosing an electric fuel pump for a Rochester carburetor, it is important to consider the GPH and PSI ratings of the pump. The Rochester Quadrajet carburetor, for example, has a small fuel bowl and requires a steady and plentiful supply of fuel to perform its best. It is recommended to run 6-7 lbs of fuel pressure for most combinations.
In addition to the pump itself, there are also a number of accelerator pump parts available for the Rochester 4G carburettor, including the accelerator pump discharge "T" guides and the accelerator pump cup. These parts help to ensure the proper functioning of the carburettor and maintain the performance of the vehicle.
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Rochester 2G, 2GC, 2GE, 2GV carburettors
The Rochester 2G, 2GC, 2GE, and 2GV carburettors are all two-barrel carburettors, which means they have two venturi tubes that supply air and fuel to the engine. These carburettors were commonly used on a variety of vehicles, including older models like the 1934 Ford.
When it comes to choosing an electric fuel pump for these Rochester carburettors, there are a few options available. One popular choice is to go with an inline electric fuel pump that is designed for carbureted engines. Brands such as Carter, Holley, and Edelbrock offer inline pumps that can provide a good balance between performance and cost. Off-brand options are also available, which may offer a more affordable solution without compromising on quality.
Carter, in particular, offers a "solenoid" type electric fuel pump that is well-suited for Rochester carburettors. It is known for being quiet and easy to mount and wire, making it a popular choice among enthusiasts. This pump has been used successfully in various applications, including a 1957 Cadillac with a 500 cubic inch engine.
When considering an electric fuel pump for your Rochester carburettor, it is important to review the options based on your specific engine configuration and performance requirements. Factors such as ease of installation, noise levels, and price can help guide your decision to ensure you get the best value and performance for your needs.
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Frequently asked questions
Some options include Carter, Mr Gasket, Holley, and Precision Universal External Electric Fuel Pump.
Yes, it is important to consider the GPH rating and psi compatibility of the electric pump with the carburetor.
Electric fuel pumps can be quieter and more reliable than mechanical pumps, which may experience issues and require frequent replacement.
The Rochester 4G carburetor pump assembly is designed to withstand today's fuel with alcohol/ethanol and comes in a 3/4" size. It is important to ensure compatibility with your specific Rochester carb model.
