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Thread: Indy 500 - what engine?

  1. #1
    Registered Member Belair-o's Avatar
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    Indy 500 - what engine?

    Hi,
    I have read several articles on this last Indy 500, and I only see discussion about the drivers, and nothing about the cars in the race. Does anyone know anything about what engines powered the various cars? I know the winning car was driven by an Aussie, and was a Penske car, but don't know about the car. Used to be a big deal, maybe not so much anymore?
    Inquiring minds want to know. Thanks, Doug

  2. #2
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    Last [I] knew Honda and Chevy had paid to have their badges put on them. The last stock block effort was Buick;

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    Registered Member BamaNomad's Avatar
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    https://www.motorsport.com/indycar/news/

    http://media.chevrolet.com/media/us/...7-indy500.html

    "Chevrolet claimed its 10
    th Indianapolis 500 victory dating to 1988 when Rick Mears won from the pole for Team Penske. Since its return to Verizon IndyCar Series competition in 2012 with the 2.2-liter twin-turbocharged, direct injected V-6 engine, Team Chevy has posted three 1-2 finishes."

    I couldn't find much more engine detail - that's certainly NOT a chevy production engine..


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    Moderator NickP's Avatar
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    2018 Verizon IndyCar Series Car Specifications

    CHASSIS:Manufacturer: Dallara Automobili, ItalyModel: Dallara IR-12 Chassis (2012-Present)Construction: Monocoque contains cockpit, fuel cell and front suspension; engine is stressed (integral) member of chassis; rear assembly contains bellhousing, gearbox and rear suspension membersMaterials: Carbon fiber, kevlar and other compositesWeight: Approximately 1620 lbs (Road/Street/Short Ovals) and 1590 lbs (Speedways) (Does not include fuel/driver/drink bottle and contents/driver equivalency weight)Length: Approximately 201.7 inchesWidth: 76.5 inches maximum, 75.5 inches minimum (75.75 inches minimum for ovals) measured outside rim to rimHeight: Approximately 40 inchesWheelbase: 117.5 to 121.5 inchesWheel Size:

    • Front: 15 inches diameter, 10 inches wide. Minimum weight: 13.48 pounds
    • Rear: 15 inches diameter, 14 inches wide. Minimum weight: 14.7 pounds

    Tires: Firestone FirehawkFront diameter: 26 inches maximum, 25 inches minimum @ 35 psiRear diameter: 27.5 inches maximum, 26.5 inches minimum @ 35 psiBrakes: PFC CR90 monobloc aluminum calipers with PFC carbon-carbon brake discs and pads.Gearbox: XTRAC #1011 gearbox. Six forward gears, one reverse gear, Mega-Line Assisted Gear Shift (paddle-shift)Fuel Cell: Single, rupture-proof cell, 18.5 U.S. gallons (standard)ENGINEManufacturers: American Honda Motor Co., Inc., ChevroletModels: Honda HI18R Indy-V-6, Chevy IndyCar V6Type: 2.2-liter (134.25 cubic inches) V-6, twin-turbocharged, Max. bore diameter 95 millimetersWeight: Minimum weight is 248 poundsTurbocharging: Twin BorgWarner 6758 turbochargersRPM: 12,000 maximum (INDYCAR-supplied rev limiter)Maximum Boost Pressure (above atmosphere): 1300 mbar (Superspeedways); 1400 mbar (Short Ovals); 1500 mbar (Road/Street Courses); 1600 mbar (Push-To-Pass)Power: Estimated 550-700 horsepower, depending on turbo boost used at trackFuel: Sunoco E85R fuel (blend of 85 percent ethanol and 15 percent racing gasoline)Injectors: Maximum two injectors per cylinder, one for direct injection, 300 bar maximum fuel system pressurePower: Estimated 550-700 horsepower depending on variable turbo boost used at track.Injector: Direct injectionECU (Engine Control Unit): McLaren Applied Technologies TAG 400iThrottle: Drive-by-wire controlled port throttles


    Last edited by NickP; 06-02-2018 at 08:04 AM.

  5. #5
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    The "Chevy" Indycar engine is not truly Chevy, but they paid for the development. Likewise the Honda. Both within some strict rules that prevent either from gaining much advantage over the other.

    The bodywork or "aero packages" are the same way. Chevy and Honda paid for their development, but outsiders did both - and they have to adhere to some pretty strict rules.

    This is in many ways "spec car" racing, but there are two distinct brands each with their own variation. This year with the new bodywork and current engines, looks like the "Chevy" stuff has an advantage on the ovals, and the "Honda" stuff has the advantage on the road courses. As far as who wins, looks like the final prep by the teams makes a difference, as well as strategy.

  6. #6
    Registered Member Belair-o's Avatar
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    Thanks guys! I had done some internet searching, and couldn't find the info - thanks for the answer! Doug

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