Wilmink Engine Parts regularly supplies new carburetors to various performance customers. The carburetor is part of the combustion engine and ensures that the fuel (usually petrol) is atomized and mixed with air. After mixing, it is sucked into the cylinders and burned.

The effect

The operation of a carburetor is as follows: There is a tube in the carburetor. When the piston in the combustion engine moves down, air is sucked in through that tube. The narrowing in this pipe causes the air to flow faster, thus reducing the pressure (venturi effect). As a result, petrol will be sucked in from a small opening in the wall of the pipe leading to the float chamber. This fuel is atomized in the air and drawn into the combustion chamber. The petrol/air ratio can be changed with the help of a nozzle. A larger atomizer means a wider hole through which petrol can pass, which means that there is more petrol in the mixture (richer). With the help of a slider or throttle needle, the supply of the mixture to the engine can be regulated. By using a throttle valve, the amount of oxygen in the carburetor is adjusted. The further the throttle is opened, the more air can be sucked in.

The float chamber

The float chamber is always filled with a small amount of fuel. When the fuel level drops, the float drops with it. When the float falls below a certain level, the needle opens an opening through which fuel from the tank (or fuel pump) can flow into the float chamber. As soon as the float chamber fills up, the float rises again, closes the opening, and stops the fuel supply from the tank or fuel pump.

High performance

Wilmink Engine Parts can supply various carburetors, from OE parts to high-performance carburetors. A large proportion of these carburetors are what are known as four-barrel carburetors. These are equipped with four venturi channels. Two of them (primary barrels) are used when the engine runs at low speed. If the engine is forced to run at higher revs, creating an oxygen/fuel shortage (due to the high revs), the other two chambers (secondary barrels) will also operate. An additional valve opens to allow access to these rooms.

Applications

The use of such carburetors has been practiced for years in various sports, such as street performance, drag racing, and powerboat racing. Wilmink Engine Parts supplies various replacement carburetors, but sometimes, it is desirable to install a larger carburetor, for example, in the racing industry. Therefore, Quick Fuel Technology (part of Holley) and Edelbrock, supply High-Performance carburetors for various engine types. The main difference between these brands is the provision of tuned, race-ready carburetors by Quick Fuel Technology. They use a variety of settings for various racing applications. Edelbrock supplies carburetors that need to be tuned.

In addition to motorsports, various carburetors are also available for water sports. Besides complete carburetors, Wilmink Engine Parts also supplies overhaul sets to overhaul the current carburetor.

Looking for a suitable carburetor? Contact our product specialist in Performance parts!