APD Billet Enforcer Circle Track Alcohol Carburetors feature a CNC custom machined billet main body and custom billet booster designed for maximum air flow and a strong booster signal. CNC machined billet metering blocks allow precise metering, a uniform fuel curve, and superior adjustability. A billet throttle base plate also CNC machined in-house at APD, offers superior strength and smoth throttle response, while a 4-corner idle system offers consistent fuel control at idle. Secondary idle speed adjustments allow for fine tuning of the secondary throttle position.
APD Billet Enforcer Circle Track Alcohol Carburetors also feature adjustable air bleeds, non-stick gaskets, large head mixture screws, and a custom hard coating / anodized finish. High flow power valves improve drivability through the corners, and custom angled floats insure correct level throughout the race track.
The BILLET ENFORCER starts from a custom extruded piece of 6061-T6 aluminum and is produced on 4-axis machining center. The raised boosters are also machined from 6061-T6 aluminum which allows us to better channel fuel around the entire diameter of the booster. This along with raising the exit point of the fuel in the booster helps stop fuel slosh out of booster on launch and when going on the throttle stop. These parts being CNC machined from a billet allows us to make whatever changes necessary without having to work around casting limitations. The billet also adds strength eliminating warped or broken main bodies. The fully CNC machined main body is hard anodized after machining to eliminate any corrosion problems and makes for a good looking carburetor for years to come. The throttle shaft bushings are made from an oil impregnated bronze to make for smooth throttle transition and eliminating throttle sticking off idle. The standard 7-9/16 x 5-3/8 hood scoop tray mounting flange is integrated into the carburetor which eliminates the need to run a plate below the carburetor making for a much cleaner setup. Externally adjustable linkage is Teflon coated along with 304 stainless steel hardware making it strong and corrosion free. These features along with our billet metering blocks, Teflon coated large window sight glass bowls, screw on jet extensions and a notched float makes this the best value the carburetor industry has seen.