To keep the Indy Racing League cars from slowing down next year when the teams are forced to use ethanol, Honda will build a bigger engine for the series.
Currrently all IRL V8 engines are 3.0-liters. Next year the maximum displacement will be 3.5-liters.
According to IRL-live.com, the bigger engines will give the cars more torque at low-rpm ranges and help improve durability. By running the engines at a lower rpm, Honda can save up to $400,000 with fewer rebuilds between races. The biggest reason for the change, however, is that the horsepower output with ethanol will be lower than the current methanol formula.