NASCAR makes another change before Daytona 500
NASCAR is making another change to cars for the Daytona 500,
this one because temperatures are expected to reach 80 degrees
during the season-opening race.
Sprint Cup officials say teams can add an extra inch to grill
openings, allowing more air to flow to engine-cooling
The change was made following the final practice session
Saturday and should help drivers keep their engines cooler at
speeds nearing 200 mph around Daytona International Speedway on
NASCAR made three changes earlier in the week, reducing the size
of the horsepower-sapping restrictor plates, adding a
pressure-relief valve to cooling systems and reducing the size of
grill openings. The moves were made to slow downs cars after speeds
topped 206 mph.