The car
Dallara INDYCAR
Manufacturer: Dallara Automobili, Italy
Model: Dallara IR-12 chassis (2012-present) with Dallara IR-18 aero kit.
Construction: Monocoque contains cockpit, fuel cell and front suspension; engine is stressed (integral) member of chassis; rear assembly contains bellhousing, gearbox and rear suspension members
Materials: Carbon fiber, kevlar and other composites
The car
Top speed (mph)
Weight (lb)
Length (in)
Wheelbase (in)
Width (in)
Top speed (mph)
Weight (lb)
Length (in)
Wheelbase (in)
Width (in)
The engine – Honda HI21R Indy-V-6
Displacement
2.2-liter (134.25 cubic inches) V-6,
twin-turbocharged
Horsepower
Estimated 550-700 horsepower, depending on turbo boost pressure used at track
Weight
Approximately 1,700 lbs (Road/Street Courses), 1,690 lbs (Short Ovals) and 1,655 lbs (Speedways)
Turbocharging:
Twin BorgWarner EFR 7163 turbochargers
RPM:
12,000 maximum (INDYCAR-supplied rev limiter)
Injectors:
Maximum two injectors per cylinder, one for direct injection, 300 bar maximum fuel system pressure
ECU (Engine Control Unit):
McLaren Applied Technologies TAG 400i
Throttle:
Drive-by-wire controlled port throttles
Gearbox:
XTRAC #1011 gearbox. Six forward gears, one reverse gear, Mega-Line Assisted Gear Shift (paddle-shift)
Length:
Approximately 201.7 inches
Width:
76.5 inches maximum, 75.5 inches minimum (75.75 inches minimum and 76.75 inches maximum for ovals) measured outside rim to rim.
Height:
Approximately 40 inches
Wheelbase:
117.5 to 121.5 inches
Wheel 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 Firehawk
Front diameter: 26 inches maximum, 25 inches minimum @ 35 psi
Rear diameter: 27.5 inches maximum, 26.5 inches minimum @ 35 psi
