▁of ▁ 1 4 0   mm ▁and ▁a ▁length ▁of ▁ 3 7 0   mm . ▁With ▁ 2 6 ▁tub es ▁to ▁take ▁induction ▁air ▁from ▁one ▁end - t ank ▁to ▁the ▁other , ▁the ▁unit ▁has ▁a ▁ 1 3 . 3 7   k W ▁heat ▁transfer ▁capacity ▁and ▁reduces ▁ 1 2 0 – 1 3 0 ▁degree ▁Cel si us ▁charge ▁air ▁to ▁ 7 0 – 8 0 ▁degrees ▁Cel si us ▁( c laimed ). ▁ ▁G ear box ▁and ▁D ri vel ine ▁ ▁Australian - del iver ed ▁Liber ty ▁B 4 s ▁come ▁with ▁a ▁longitud in ally ▁mounted ▁ 5 - speed ▁manual ▁g ear box ▁only . ▁It ▁is ▁essentially ▁the ▁same ▁unit ▁that ▁was ▁introduced ▁in ▁MY 9 9 ▁models ▁( which ▁saw ▁the ▁most ▁changes ▁since ▁the ▁Liber ty ▁was ▁introduced ▁in ▁ 1 9 9 0 ). ▁ ▁Among st ▁its ▁list ▁of ▁improvements ▁is ▁increased ▁case ▁rig id ity ▁and ▁twice ▁the ▁number ▁of ▁bol ts ▁att aching ▁it ▁to ▁the ▁engine ▁( e ight ▁instead ▁of ▁four ). ▁The ▁sync rom esh ▁ba ulk ▁ring , ▁g ear ▁dock ing ▁teeth ▁angles ▁and ▁the ▁double ▁cone ▁syn ch ro ▁on ▁ 2 nd ▁and ▁ 3 rd ▁g ear ▁have ▁also ▁all ▁been ▁ret un ed . ▁ ▁The ▁B 4 ' s ▁' S ▁type ' ▁close - rat io ▁g ear set ▁has ▁t aller ▁r ati os ▁in ▁the ▁first