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2018 Dodge Challenger SRT Demon Fact Sheet

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  • 2018 Dodge Challenger SRT Demon Fact Sheet

    The Dodge Challenger is a horrible car for a track with corners, but it is an amazing machine, nonetheless. Historic even. FCA released this fact sheet, which I thought was kind of interesting.


    Click image for larger version

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    Details about the supercharged 6.2-liter HEMI® V-8 and powertrain in the 2018 Dodge Challenger SRT Demon:

    Displacement: Supercharged 6.2-liter V-8

    Construction: Deep-skirt cast iron block; aluminum alloy heads with hemispherical combustion chamber

    Output:

    840 bhp (626 kW) @ 6,300 rpm; 770 lb.-ft (1,044 N•m) @ 4,500 rpm with Direct Connection Controller and unleaded 100 octane minimum fuel
    808 bhp (603 kW) @ 6,300 rpm; 717 lb.-ft (972 N•m) @ 4,500 rpm with Premium 91 octane fuel

    Production site: Saltillo Engine Plant, Ramos Arizpe, Mexico
    62 percent new content compared with Hellcat V-8: engine block; crankshaft; pistons; connecting rods; supercharger
    Cylinder heads machined on dedicated Demon/Hellcat CNC machines
    Engine block is deck plate honed to minimize bore distortion
    Every Demon and Hellcat engine is dyno tested for 42 minutes under load up to 5,200 rpm before being shipped to assembly plant in Brampton, Ontario

    More air: Largest functional hood scoop opening (45.2 square inches) and triple-inlet air box (903.1 cubic inches). High flow, low restriction inlet system designed to deliver cool air into the supercharger.

    Air-flow rate: 1,150 cubic feet per minute

    SRT Power Chiller™: Redirects air conditioning refrigerant from cabin to chiller unit; reduces charge air temperature by 18 degrees Fahrenheit

    Supercharger:
    Twin screw, 2.7 liters per revolution
    Rotors 1.1 inches longer compared with Hellcat
    Maximum boost pressure 14.5 psi compared with 11.6 psi for Hellcat
    Dual water/air heat exchangers integrated into supercharger housing
    Electric pump flows up to 11.9 gallons per minute

    Engine internals:
    Forged alloy steel crankshaft with 90.9-millimeter stroke and revised balancing
    Induction-hardened crank bearing surfaces; individual journal optimized main bearing clearances
    Forged high-strength alloy pistons; 30-micron increased piston to bore clearance
    Powder forged connecting rods; upgraded shank and big end; revised ultra-high tensile fasteners
    Flow doubled on piston cooling oil jets
    Revised design valve springs
    33 percent increase in oiling for valve springs and rocker tips – lubrication and cooling
    Single-groove collets on valve stems for improved stability
    Fuel injector pressure increased 27 percent
    Oil pan and windage tray optimized for high acceleration – tested up to 1.8 g

    Transmission: TorqueFlite 8HP90 eight-speed automatic
    Upgraded automatic transmission torque converter increases torque multiplication 18 percent
    Torque converter stall speed increased 11 percent
    In Drag Mode, transmission minimizes torque cut during gear changes – 400 millisecond shifts

    Drivetrain:
    Limited-slip differential
    230-millimeter ring gear in high strength alloy, heat-treated aluminum differential housing
    3.09 final drive ratio for maximum acceleration
    20-percent thicker prop shaft made of high strength, low alloy steel tube; high strength steel stub shafts
    Upgraded halfshafts with 8-ball Cross-Glide inner and outer joints; larger diameter barshafts with 41-spline count; high alloy steel inner and outer stub shafts
    Nitto drag radial tires achieve up to 40 percent more launch force

    Fun facts:
    During a quarter-mile run, the Demon V-8 ingests 173 cubic feet of air. That’s equivalent to the lung capacity of 816 humans.
    800 feet into a quarter-mile run, the Demon V-8 would empty all the air in the cabin of the Dodge Challenger SRT Demon – 105 cubic feet
    Demon V-8 cooling system rejects 258 kW of heat at rated power – that would boil 1 quart of water at room temperature in 1.2 seconds. The heat rejected is equal to 250 electric toasters.
    At rated power, high-octane fuel flows at 1.36 gallons per minute. Typical shower head flows at 2 gallons per minute
    On each power stroke, piston and connecting rod is loaded with 11 tons of force – equivalent of 5 2018 Dodge Challenger SRT Demons. This happens more than 50 times a second @ 6,300 rpm.
    Torque Reserve and TransBrake combined generate 317 lb.-ft. of incremental torque, for total launch torque of 534 lb.-ft.
    The driveline sees 11,164 lb.-ft. of ring gear torque at launch. Results in a 1.8 g launch.
    More than 1 ton (2,500 pounds) transferred from front to rear wheels at launch
    www.TrackHQ.com

  • #2
    A lot of reliability engineering!

    Comment


    • #3
      I think the fun facts section is most entertaining part of the fact sheet.
      www.TrackHQ.com

      Comment


      • #4
        Ok. Who will be the first to create a Demon Miata? C'mon Moti and Ryan. Time to step up.

        Mark
        AiM Data and Video systems, Suspension Setup, Race car builds, support, and rentals. At your beck and call.

        Mark Nichols
        Iron Canyon Motorsports
        http://www.ironcanyonmotorsports.com

        Comment


        • #5
          Originally posted by markn View Post
          Ok. Who will be the first to create a Demon Miata? C'mon Moti and Ryan. Time to step up.

          Mark
          Should be something like 6x6

          Comment

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