Jr. Dragster Carburetors, Fuel Pumps & Parts

The correct combination of fuel system parts will provide the best performance possible for your JR dragster at the next race. This will result in more consistent runs that you need in order to be first at the finish line, from a more reliable engine, race after race.

Replacing or upgrading the fuel system on your JR dragster with the properly matched parts and tuning helps create quicker starts, a more consistent idle, and improved acceleration. This is achieved with the proper amount of fuel with improved atomization that is ignited in the combustion chamber at all RPM levels.

The amount of oil a Jr dragster engine will take does depend on the model and type. Most Jr Dragster engines use around 12 to 14 ounces of oil.

Per JR Race Car, the following list provides the Jr dragster carburetor size recommendation, depending on the engine. If the engine is modified, the recommended size may change.

Depending on the engine setup, there are different fuel pump mounting and performance options to choose from. The two most common mounting options are the "Walbro mount" and "Mikuni mount". Another option is a flush mount, which requires a custom adapter to attach the pump. There are also a couple different performance options for fuel pumps, such as the JR Race Car pump and the Magnafuel 4000 pump, depending on your engine's needs.

The following list, per JR Race Car, provides the recommended intake manifold, depending on the application.

Building a Jr dragster motor requires a lot of preparation and planning. First, you need to select the size and type based on what the official rulebook allows so you can race in events. This is because Jr dragster engine horsepower and size is regulated to make racing fair for all participants. Building an engine starts with a block and then adding the crankshaft, connecting rods, and internal engine components. This is followed up by the cylinder heads and remaining parts to complete the engine build, including the fuel system. To help you with your build, JEGS offers a large selection of engine parts to choose from. JEGS also offers a large Jr dragster engine selection if you prefer to save time.

When building or upgrading your Jr. Dragster engine, the fuel system needs to be properly matched to provide the best power and performance for race day. This includes the proper size Jr dragster fuel pump, carburetor, air filter, Jr dragster carburetor top kit, and intake manifold. With the proper planning and installation, your chances to be in the winning circle will greatly improve. Browse our full line of JEGS Jr dragster parts to help you get to the finish line first at the next race.