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  1. #1

    Top Fuel Dragster fact page.

    One Top Fuel dragster 500 cubic inch Hemi engine makes more horsepower than the first 4 rows at the Daytona 500.

    Under full throttle, a dragster engine consumes 1˝ gallons of nitromethane per second;
    a fully loaded 747consumes 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 supercharger.

    With 3000 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 1.7:1 air/fuel mixture for nitromethane the flame front temperature measures 7050 degrees F.

    Nitromethane 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 1/2 way, the engine is dieseling from compression plus the glow of exhaust valves at 1400 degrees 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 at 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 9500 rpm.

    The Bottom Line; Assuming all the equipment is paid off, the crew worked for free, and for once NOTHING BLOWS UP, each run costs an estimated US $1,000.00 per second.
    The current Top Fuel dragster elapsed time record is 4.441 seconds for the quarter mile (10/05/03, Tony Schumacher). The top speed record is 333.25 mph (533 km/h) as measured
    over the last 66' of the run (11/09/03 Doug Kalitta).

    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 past 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 1320 foot
    long race! course. That, folks, is acceleration.

    Awesome


  2. #2
    WATER WOODY's Avatar
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    Great post Ross, When i sponsored Gary Densham in Seattle a couple years ago, he was telling me that they can reach about 100mph in the first 60' off the starting line!

  3. #3
    Tiny's Avatar
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    And people say that NHRA drag racing is not a adrenlizing sport!!!!! ha ha ha

  4. #4
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    they dont race a true 1/4 mile, 1320' anymore though correct?

  5. #5
    Joe Stang's Avatar
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    Quote Originally Posted by Mike H View Post
    they dont race a true 1/4 mile, 1320' anymore though correct?

    no they run 1000' now i believe.

  6. #6
    Click avatar for tech links/info, donation request K447's Avatar
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    Where/when was that article originally published?

    Is is technically accurate?

  7. #7
    Quote Originally Posted by K447 View Post
    Where/when was that article originally published?

    Is is technically accurate?
    Yes it is technically accurate, and probably 3-5 years old, so the numbers now would be even more staggering to believe.
    Yes after Scott Kalittas crash and death in 08 they shortened T/F and F/C to 1000 feet.
    Yes Kevin the 0-100 times are usually around .8 seconds.. Thats 8/10ths of a second.
    Any Top Fuel virgins out there, make sure to go lose your nitro virginity this year at an NHRA event.
    I lost mine way back in 1973 at the US Nationals in Indy.
    It had a profound effect on me, and i was forever infected with the fever..
    You will be stunned.. And no gas masks allowed.. Gas masks in the pits are for women!

  8. #8
    WATER WOODY's Avatar
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    Quote Originally Posted by rossnemo View Post
    Yes it is technically accurate, and probably 3-5 years old, so the numbers now would be even more staggering to believe.
    Yes after Scott Kalittas crash and death in 08 they shortened T/F and F/C to 1000 feet.
    Yes Kevin the 0-100 times are usually around .8 seconds.. Thats 8/10ths of a second.
    Any Top Fuel virgins out there, make sure to go lose your nitro virginity this year at an NHRA event.
    I lost mine way back in 1973 at the US Nationals in Indy.
    It had a profound effect on me, and i was forever infected with the fever..
    You will be stunned.. And no gas masks allowed.. Gas masks in the pits are for women!
    I can handle the nitro for a short time and find myself looking for a way out. We go to Sanoma every year now for 5 years, if you have not been to one, GO !!!!!

  9. #9
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by rossnemo View Post
    Yes it is technically accurate, and probably 3-5 years old, so the numbers now would be even more staggering to believe...
    Even this stuff?
    ...the fuel mixture is compressed into a near-solid form before ignition. Cylinders run on the verge of hydraulic lock at full throttle....

  10. #10
    Vern's Avatar
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    Quote Originally Posted by K447 View Post
    Even this stuff?
    Its true ... Nitro carries its own oxygen basically, which is part of the reason it makes so much power. But that is also why the air/fuel mix is 1.7:1 versus gasoline at 14.7:1. At 1.7:1 ... think about it, the 'intake charge' is mostly nitro.

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