Ka lilemo tse fetang 80, UK Perkins esale e le morekisi ea etelletseng pele lefats'eng oa lienjine tsa diesel le khase 'marakeng oa 4-2,000 kW (5-2,800 hp).Matla a bohlokoa a Perkins ke bokhoni ba eona ba ho lokisa lienjine ka nepo ho fihlela litlhoko tsa bareki, ke ka lebaka leo tharollo ea enjine ea eona e ts'eptjoang ke bahlahisi ba kaholimo ho 1,000 marakeng oa indasteri, oa kaho, oa temo, o sebetsanang le thepa le mebaraka ea phepelo ea motlakase.Ts'ehetso ea lihlahisoa tsa lefats'e tsa Perkins e fanoa ke kabo ea 4,000, likarolo le litsi tsa lits'ebeletso.