Outside of torque converters and electronic fuel injection, carburetors can be one of the more difficult things to master the tuning of on a race car. Understnding how to turn the screws on a carburetor will make your bracket car deadly accurate, or help make a heads-up car perform at its peak.
Quick Fuel Technology (QFT) is an industry leader in anything carburetor-related, and they’re passing some of their tuning know-how on to you, their customer, in this great tip-filled “Carb Class.”
One of the things that sets QFT apart, besides their attention to detail, is the practice of testing of every carburetor before it is shipped to customers.The testing gets the carburetor very close to perfection, so when a customer gets their new QFT carb, it might only need some slight tweaking … and that”s where this Carb Class comes into play.
Before you start the process lined out by QFT, it’s important to make sure the rest of your engine’s systems are in good running order, to prevent adjusting the carburetor based on another issue. The advantage of the information provided by QFT is that it will help you set up the carburetor to have a solid baseline tune, and have room to be tuned up even more after you have it running well.
The carb wizards at QFT even go a bit further and provide you some bonus information on how to tune for altitude and deal with those pesky valve circuits on your carburetor.