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Quick Fuel Q-850-A - Quick Fuel Q-Series Carburetors

Quick Fuel Q-850-A - Quick Fuel Q-Series Carburetors

JEGS Part Number: 793-Q-850-A

Q-Series 850cfm Drag Race Carb
  • Alcohol

    Performance & Value

    Main Body
  • All aluminum (upgrade from existing designs)
  • Tumbled finish for a high luster that protects against contaminants
  • Recessed air bleeds out of air stream to improve airflow
  • Raised accelerator pump squirter nozzle boss also out of air stream to reduce the possibility of high-speed pullover or "dribbling"

    Metering Blocks
  • CNC-machined from solid aluminum
  • 4 stages of emulsion help break up solid fuel for leaner air/fuel sooner & excellent throttle response
  • Stainless steel idle mixture screw with a superior nylon seal that won't deteriorate over time like cork
  • Machined internal passages (vs. die-cast cored holes) ensure consistent performance and almost no chance of porosity holes cross-talking between passages
  • 4-corner idle system for fine-tuning even with extremely long duration camshafts

    Throttle Body
  • CNC-machined from solid aluminum for a more stable platform than die-cast equivalent
  • Teflon-coated throttle shafts with Teflon ribbon bearings reduce rotational resistance and nearly eliminate the use of the throttle body shaft hole as a bushing (great protection in dirt environments)
  • Mechanical secondary carbs have the Quick Link Secondary Opening System that enables rate adjustment simply by changing links (available opening rates: 40%, 60%, 1:1)
  • Mechanical secondary carbs also have adjustable secondary airflow cam brackets that allow better idle tuning with race-oriented camshaft profiles

    Fuel Bowls
  • Die-cast aluminum for cooler fuel resulting in fewer fuel percolation problems
  • Sight glass to monitor fuel level without risking fuel spillage
  • All standard service replacement parts accepted
  • Floats based on application, i.e. Drag Race Carbs have notched floats & secondary jet extensions

    Vacuum Secondary Carburetors
  • Exclusive billet secondary housing cover
  • Cover has an integrated screw that allows timing & opening rate adjustments with just a simple turn
  • Adjustable housing offers much finer tuning to dial-in application

    Q-Series Mechanical Secondary Carburetor Kits include:
  • Quick Fuel Q-Series Drag Race Carb (650, 750, 850, 950, or 1050 cfm)
  • JEGS Dual Inlet Fuel Line Kit #555-100822
  • JEGS Fuel Pressure Gauge 15 psi #555-41010

  • Quick Fuel 793-Q-850-A

    Manufacturer's Part Number:
    Rated 5 out of 5 by from Bolt on and go race! This particular alcohol carburetor was purchased to replace a gas application. With a quick phone call to the tech line at Quick Fuel, they recommended what carburetor should be used. I called up Jegs and the new carburetor was at my doorstep within 2 days! The carburetor was bolted on along with other Quick Fuel components (fuel pump, regulator and inline filter) and set to recommend specs. It ran smooth and consistent right out of the box!
    Date published: 2015-02-15
    • 2015-11-27T08:48CST
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