on ▁teeth ▁instead ▁of ▁being ▁completely ▁made ▁from ▁n yl on ▁as ▁on ▁previous ▁ones . ▁After market ▁steel , ▁al umin ium , ▁and ▁al loy ▁g ears ▁have ▁been ▁produced ▁as ▁rep lac ements ▁to ▁prevent ▁the ▁g ear ▁from ▁stri pping ▁its ▁teeth : ▁this ▁is ▁commonly ▁due ▁to ▁over he ating ▁causing ▁the ▁n yl on ▁to ▁weak en . ▁This ▁is ▁one ▁of ▁the ▁two ▁major ▁" weak ▁points " ▁of ▁the ▁Es sex ▁ve e - eng ines ▁with ▁the ▁other ▁being ▁the ▁hex ag onal ▁oil ▁p ump ▁sp ind le ▁/ ▁sh aft ▁which ▁can ▁round ▁off ▁or ▁even ▁break . ▁ ▁The ▁ 2 . 5 ▁L ▁engine ▁was ▁r ated ▁at ▁ ▁S AE ▁gross ▁or ▁ ▁D IN ▁and ▁peak ▁tor que ▁was ▁r ated ▁at ▁ ▁S AE ▁gross ▁or ▁ ▁D IN . ▁The ▁ 2 . 5 - lit re ▁version ▁ended ▁production ▁in ▁ 1 9 7 7 ▁along ▁with ▁the ▁Es sex ▁V 4 ▁engine . ▁The ▁ ▁V 6 ▁engine ▁as ▁used ▁in ▁the ▁Ford ▁Cap ri ▁R S ▁ 3 1 0 0 ▁was ▁essentially ▁a ▁ 3 . 0 ▁L ▁engine ▁b ored ▁out ▁by ▁ ▁or ▁ 6 0 ▁thousands ▁of ▁an ▁in ch ▁from ▁ ▁to ▁. ▁It ▁was ▁capable ▁of ▁ ▁at ▁ 5 0 0 0   r pm ▁and ▁ ▁of ▁tor que ▁at ▁ 3 0 0 0   r pm . ▁It ▁featured ▁blue ▁ro cker ▁covers