Until 2018, the 2.2-liter turbo V6 regulations were introduced in 2012, IndyCar has run 130kPa [1.3-bar] boost at superspeedways on raceday, 140kPa at short ovals and in Indy 500 qualifying, and 150kPa on road and street courses. Last year, the short oval boost was increased to 150kPa, and so rather than have Indy 500 qualifying as the outlier on 140kPa, IndyCar has simplified engine mapping requirements by increasing Indy’s Fast Friday and qualifying weekend boost to 150kPa.
This has coincided with the aeroscreen’s introduction in 2020 – but Dixon believes the drag induced by the screen has been overemphasized, and that therefore lap times could come down.
“Even though we see the drag numbers are higher, our straightline speeds are the same if not better this year than last year, even in roadcourse trim,” Ganassi’s 2008 Indy winner and three-time 500 polesitter told Motorsport.com. “Granted, some of the engine numbers – horsepower and torque – will be up a little bit this year, but not by that much, because we’re getting near the end of the cycle for this engine spec. The manufacturers have pretty much got all they can from the 2.2.
Dixon in practice at Texas Motor Speedway.
Photo by: IndyCar
“When we did the Speedway test with the aeroscreen last year, we expected the…