From Autosport · Tom Howard · · 1m 20s
FIA's 2027 Rally Class Plan
FIA sets 32mm vs 33mm turbo restrictor rule to split Rally1 and Rally2 in WRC 2027.
In brief
FIA sets 32mm vs 33mm turbo restrictor rule to split Rally1 and Rally2 in WRC 2027. FIA will use 32mm turbo restrictor for Rally2 cars without update kit to differentiate from Rally1 cars with 33mm restrictor in WRC 2027. Originally reported by Autosport.
FIA proposes 2027 class split
The FIA has put forward its proposal to differentiate between classes in the new era in WRC in 2027.
WRC27 and Rally2 kit cars
Next year the WRC is gearing up for a seismic shift in technical regulations that will see all-new WRC27 cars and Rally2 cars, featuring the FIA’s 7,500-euro update kit, compete under one new Rally1 umbrella.
Rally2 kit cars weigh less
Rally2 cars featuring the update kit will weigh 10 kilograms less than the new WRC2027 cars.
Performance concerns
Rally2 cars without the FIA update kit are also permitted to compete in the championship next year albeit in separate Rally2/WRC2 class.
Turbo restrictor change
WRC27 and Rally2 Kit cars will be permitted to run a 33mm turbo restrictor, while Rally2 cars without the update kit will have to run a 32mm turbo restrictor.
Power difference expected
It is anticipated this change could produce as much as a 15-horsepower difference between the two classes, with Rally2 cars producing a 290-horsepower output.
The big picture
FIA will use 32mm turbo restrictor for Rally2 cars without update kit to differentiate from Rally1 cars with 33mm restrictor in WRC 2027.
