November 11, 2019
Wilmink Performance regularly supplies new carburettors to various customers. The carburettor is part of the combustion engine and ensures that the fuel (usually petrol) is atomised and mixed with air. After mixing, it is sucked into the cylinders and burned.
Basically, the operation of a carburettor is as follows: There is a tube in the carburettor. 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 atomised in the air and drawn into the combustion chamber. The petrol/air ratio can be changed with the help of a nozzle. A larger atomiser means a larger 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 carburettor is adjusted. The further the throttle is opened, the more air can be sucked in.
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 from the fuel pump) can flow into the float chamber. As soon as the float chamber fills up, the float rises again, closes the opening and the fuel supply from the tank or fuel pump stops again.
Wilmink Performance can supply various carburettors, from OE parts to high performance carburettors. A large proportion of these carburettors are what are known as four-barrel carburettors. These are equipped with four venturi channels. Two of them (primary barrels) are used when the engine is running at low speed. If the engine is forced to run at higher revs and thereby creates 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.
The use of such carburettors has been practised for years in various sports such as street performance, drag racing and powerboat racing. Wilmink Performance supplies various replacement carburettors, but sometimes it is desirable to install a larger carburettor for example in the racing industry. The brands Quick Fuel Technology (part of Holley) and Edelbrock therefore supply High Performance carburettors for various engine types. The main difference between these brands is the provision of tuned, race-ready carburettors by Quick Fuel Technology. They use a variety of settings for various racing applications. Edelbrock supplies carburettors that need to be tuned.
In addition to motor sports, various carburettors are also available for water sports for example. Besides complete carburettors, Wilmink Performance also supplies overhaul sets to overhaul the current carburettor.
Looking for a suitable carburettor? Contact Lammert, our product specialist in Performance parts!
Contact our product specialists; they will be happy to work with you to find a solution!
+31 (0)50 549 52 30
performance@wilminkgroup.com
Or order via our webshop.