bo ▁era ▁in ▁the ▁early ▁ 1 9 8 0 s ▁put ▁an ▁end ▁to ▁the ▁D F V ' s ▁F 1 ▁activities , ▁as ▁even ▁with ▁modifications ▁the ▁ 1 5 - year - old ▁engine ▁could ▁not ▁hope ▁to ▁comp ete ▁with ▁the ▁vast ▁power ▁being ▁put ▁out ▁by ▁the ▁new ▁ 1 . 5 - lit re ▁tur bo charg ed ▁engines . ▁However , ▁in ▁the ▁early ▁days ▁of ▁tur bo ▁F 1 ▁cars ▁( 1 9 7 9 - 1 9 8 2 ) ▁the ▁Ren ault , ▁Ferr ari ▁and ▁To le man ▁were ▁unable ▁to ▁offer ▁consistent ▁opposition ▁to ▁the ▁Cos worth ▁D F V ▁British ▁teams . ▁The ▁early ▁tur bo ▁Ren ault , ▁though ▁powerful ▁( part icular ly ▁so ▁on ▁high ▁alt itude ▁tracks ▁such ▁as ▁Inter lag os , ▁K yal ami , ▁Jar ama , ▁D ij on - P ren ois ▁and ▁the ▁Österreich ring ) ▁were ▁much ▁heav ier , ▁cum bers ome , ▁complicated ▁and ▁significantly , ▁much ▁more ▁un re li able ▁than ▁the ▁British ▁Cos worth ▁D F V ▁teams . ▁▁ ▁The ▁extra ▁power ▁and ▁tor que ▁of ▁a ▁tur bo ▁engine ▁put ▁much ▁more ▁stra in ▁on ▁the ▁g ear box , ▁driv esh aft s ▁and ▁bra kes ▁on ▁the ▁Ren ault s ▁and ▁Ferr aris , ▁and ▁during ▁the ▁early ▁ 1 9 8 0 s ▁the ▁sight ▁of ▁a ▁Ren ault ▁or ▁Ferr ari ▁wil ting ▁under ▁the ▁stra in