Carter WCFB Metering Jets

The size and type of the jet in a Carter WCFB carburetor significantly influence the engine's fuel efficiency and performance. Typically, these carburetors come equipped with primary and secondary jets, with the primary jets being crucial for low-speed operation and the secondary jets coming into play at higher speeds. Adjusting these jets allows for the fine-tuning of the air-fuel mixture, a process critical for achieving optimal engine performance and efficiency.

For enthusiasts and restorers, finding the right jet size can be a meticulous process. It involves considering factors such as the engine's displacement, the altitude at which the vehicle is primarily driven, and any modifications that have been made to the engine or exhaust system. Using jets that are too large can lead to a rich fuel mixture, causing the engine to run inefficiently and potentially leading to carbon build-up. Conversely, jets that are too small can result in a lean mixture, risking engine damage due to overheating or detonation.