650 CFM Black Diamond Q-Series Race Carburettor Mechanical Secondaries, No Choke, 4150 Series

Ideally suited for bracket racers and weekend warriors alike, Q-Series carburettors are purpose-built for the dragstrip. To combat the g's experienced during hard launches, Q-Series carbs are equipped with notched floats and secondary jet extensions. The high-flow aluminium main body isn't just lightweight, but it also features recessed air bleed cavities for improved air flow. Die-cast venturi are machined to exacting tolerances for outstanding throttle response.Billet metering blocks ensure a uniform fuel curve, while throttle-bodies enhance durability. For those days when track conditions vary from one pass to the next, QFT's QuickLink system makes adjusting the secondaries easyon models equipped with mechanical secondaries. The Q-Series is our most comprehensive line of carburetors, with applicationsavailable for use with gasoline, methanol, and E85 fuels, forced induction, drag race, circle track, and comes in both vacuum and mechanical secondary models.

Even acarburetor that performs greatcan still be an eyesore, but it doesn't have to be that way. Quick Fuel Technology's proprietary Black Diamond coating offers excellent corrosion resistance as well as a durable finish that easily stands up to dirt and oil. In addition to great looks, the PTFE coating reduces fuel temperature by six percent for improved performance.

Product Specs:

• Throttle Bore Size 1-11/16"
• Primary Jet 22-68
• Secondary Jet 22-76
• Idle Bleed 26-73
• Inter. Bleed N/A
• Hi-Speed Bleed 26-31
• Pump Nozzle 21-31
• Power Valve 25-45
• Needle & Seat 18-2
• Fuel Type Gas