Cadillac is rolling out a new, smaller-displacement engine for its DPi (Daytona Prototype international) race cars in the IMSA WeatherTech SportsCar Championship next year. The new engine is a normally-aspirated, 5.5-liter V8, which will replace the 6.2-liter mill that helped propel Ricky and Jordan Taylor to the top of the driver’s championship podium last season. Like the motor it supplants, it will be built for Cadillac by ECR Engines in North Carolina.
The new 5.5-liter has already been approved for use by IMSA, Sportscar365 reports. It was tested earlier in the month at an IMSA-sanctioned test at Daytona International Speedway.
Why Go Smaller?
Cadillac’s DPi race cars were hit with Balance of Performance (BoP) adjustments throughout the 2017 IMSA season in an attempt to keep the class competitive. Ricky and Jordan Taylor’s No. 10 Konica Minolta Cadillac DPi-V.R is likely largely to blame, having won each of the first five events in the series.
Cadillac’s new, smaller DPi engine could help Cadillac achieve a more balanced torque curve without incurring BoP penalties, according to Sportscar365.
The 2018 IMSA WeatherTech SportsCar Championship season will officially kick off next weekend at the Roar Before the Rolex 24 three-day test event. Ricky Taylor won’t be behind the wheel of the No. 10 Cadillac DPi-V.R in 2018, having chosen to take a spot driving for Team Penske; in his place will be Dutch racing driver Renger van der Zande.