How much fuel does a top fuel dragster use

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  1. brian6pac

    brian6pac Well-Known Member

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    Here is a injector test



    Here is a run, Watch the fuel gauge

     
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    • Hellrats

      Hellrats Still wrenching after all these years FABO Gold Member

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      Wow! I knew they used a lot but damn!
       
    • rumblefish360

      rumblefish360 so close yet so far away

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      I had seen something on TV once about this. They are VERY thirsty for sure. I just don’t remember how many gallons the fuel cell contains.
       
    • Cuda416

      Cuda416 Well-Known Member

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      About the same as a woodchuck, chucks wood :)
       
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      • brian6pac

        brian6pac Well-Known Member

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        About 17 gal a 1000 ft pass
         
      • gdrill

        gdrill OK, now what??? Staff Member FABO Gold Member

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        I always liked this......

        Read this thru slowly and try to comprehend the amount of force produced in just
        under 4 seconds! There are no rockets or airplanes built by any government in
        the world that can accelerate from a standing start as fast as a Top Fuel
        Dragster or Funny Car!

        DEFINITION OF ACCELERATION

        One top fuel dragster 500 cubic inch Hemi engine makes more horsepower than the
        first 4 rows of stock cars at the Daytona 500.

        It takes just 15/100ths of a second for all 6,000+ horsepower of an NHRA Top
        Fuel dragster engine to reach the rear wheels.

        Under full throttle, a dragster engine consumes 1-1/2 gallons of nitro methane
        per second; a fully loaded 747 consumes jet fuel at the same rate with 25% less
        energy being produced.

        A stock Dodge Hemi V8 engine cannot produce enough power to drive the dragster's
        supercharger.

        With 3,000 CFM of air being rammed in by the supercharger on overdrive, the fuel
        mixture is compressed into a near-solid form before ignition.

        Cylinders run on the verge of hydraulic lock at full throttle.

        At the stoichiometric (stoichiometry: methodology and technology by which
        quantities of reactants and products in chemical reactions are determined) 1.7:1
        air/fuel mixture of nitro methane, the flame front temperature measures 7,050
        deg F.

        Nitro methane burns yellow... The spectacular white flame seen above the stacks
        at night is raw burning hydrogen, dissociated from atmospheric water vapor by
        the searing exhaust gases.

        Dual magnetos supply 44 amps to each spark plug. This is the output of an arc
        welder in each cylinder.

        Spark plug electrodes are totally consumed during a pass. After halfway, the
        engine is dieseling from compression, plus the glow of exhaust valves at 1,400
        deg F. The engine can only be shut down by cutting the fuel flow.

        If spark momentarily fails early in the run, unburned nitro builds up in the
        affected cylinders and then explodes with sufficient force to blow cylinder
        heads off the block in pieces or split the block in half.

        In order to exceed 300 mph in 4.5 seconds, dragsters must accelerate an average
        of over 4G's. In order to reach 200 mph (well before half-track), the launch
        acceleration approaches 8G's.

        Dragsters reach over 300 miles per hour before you have completed reading this
        sentence.

        Top fuel engines turn approximately 540 revolutions from light to light!
        Including the burnout, the engine must only survive 900 revolutions under load.�

        The redline is actually quite high at 9,500 rpm.

        Assuming all the equipment is paid off, the crew worked for free, and for once
        NOTHING BLOWS UP, each run costs an estimate $1,000.00 per second.

        The current top fuel dragster elapsed time record is 4.428 seconds for the
        quarter mile (11/12/06, Tony Schumacher, at Pomona, CA ). The top speed record
        is 336.15 mph as measured over the last 66' of the run (05/25/05 Tony
        Schumacher, at Hebron, OH).

        Putting all of this into perspective:
        You are driving the average $140,000 Lingenfelter 'twin-turbo' powered Corvette
        Z06. Over a mile up the road, a top fuel dragster is staged and ready to launch
        down a quarter mile strip as you pass. You have the advantage of a flying start.
        You run the 'Vette hard up through the gears and blast across the starting line
        and pass the dragster at an honest 200 mph. The 'tree' goes green for both of
        you at that moment.

        The dragster launches and starts after you. You keep your foot down hard, but
        you hear an incredibly brutal whine that sears your eardrums and within 3
        seconds, the dragster catches and passes you. He beats you to the finish line, a
        quarter mile away from where you just passed him.

        Think about it, from a standing start, the dragster had spotted you 200 mph and
        not only caught, but nearly blasted you off the road when he passed you within a
        mere 1,320 foot long race course.

        ...... and that my friend, is ACCELERATION!
         
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        • brian6pac

          brian6pac Well-Known Member

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          This always amazed me,
          8000 RPM for 4.5 sec is only 600 total revolutions, and it's over
           
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          • oldkimmer

            oldkimmer FABO Gold Member FABO Gold Member

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            I was watching on tv awhile ago and they said from warm up, burnout to the run it uses 45 gallons. Yikes. Obviously they are wrong. Kim
             
            Last edited: Mar 15, 2019
          • dartfreak75

            dartfreak75 FABO Gold Member FABO Gold Member

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            Wow that is some crazy stuff right there! I had no idea.
             
          • brian6pac

            brian6pac Well-Known Member

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            Here is another good video on how it all works

             
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            • Hellrats

              Hellrats Still wrenching after all these years FABO Gold Member

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              Two and a half inch full line! LOL that's the size of my exhaust.
               
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              • Dartnut

                Dartnut Don't hate me because i'm beautiful

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                Wow!
                They accelerate almost as good as my Dart Sport!
                 
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