BY TEAM FORD RACING CORRESPONDENT

Joliet, Ill. — Violators beware. NASCAR has had enough.

Mike Helton, the sport’s president, is telling competitors at this weekend’s NASCAR event at Chicagoland Speedway that he is upping the punishment for those who violate the rules.

Case in point: A pair of six-week suspensions handed out this week for violations that occurred at Daytona International Speedway.

Helton told the Busch teams during their pre-race meeting, and he is expected to do the same with the Nextel Cup teams prior to Sunday’s race.