Idle Metering System (Holley 852-FFG)
Main Metering System (Holley 852-FFG)
Power Mixture Supply (Holley 852-FFG)
Accelerating Pump (Holley 852-FFG)
Governor (Holley 852-FFG Model 1174)
The Holley Model 852-FFG Carburetor is a dual downdraft carburetor of the plaine tube type, designed for use on engines of approximately 260 to 390 cubic inch displacement. All of the metering jets and passages are located in the center of the main body, which provides for correct metering of fuel and air at all practical operating angles. The carburetor fuel system is fully balanced and sealed, the air for all vents and bleeds being taken from the main air entrance of the carburetor, thus, only air which has passed through the air cleaner is admitted to the carburetor.
The governor actuated throttle mechanism is an integral part of the carburetor, designed to provide the needed power required for moving the throttle to governing speeds as controlled by a separately driven governor rotor. The combination of these two units has been engineered to give instant response and accurate governing.
A power valve provides additional fuel for high power operation, and a throttle actuated accelerating pump provides the necessary feed for fast engine pick-up.
A universal throttle lever which is self-locking and adjustable to any position is incorporated in this carburetor.
This dual carburetor can be considered as two carburetors built into one unit. There are separate venturi tubes, idle tubes and throttle plates and a separate main metering system and idle system, one for each side.