▁increased ▁to ▁. ▁With ▁five ▁main ▁bear ings ▁on ▁a ▁for ged ▁steel ▁c rank sh aft , ▁the ▁engine ▁is ▁extremely ▁smooth ▁and ▁dur able . ▁The ▁two - bar rel ▁( t win - cho ke ) ▁Hit achi ▁car b ure tt or ▁was ▁significantly ▁improved ▁with ▁the ▁addition ▁of ▁a ▁power ▁val ve ▁circuit . ▁The ▁A 1 2 ▁engine ▁produced ▁ ▁and ▁▁ ▁tor que . ▁ ▁A ▁special ▁version ▁of ▁the ▁A 1 2 ▁called ▁the ▁" A 1 2 ▁G X " ▁engine , ▁was ▁available ▁( A 1 2 G X ▁or ▁A 1 2 T ▁for ▁front - w heel ▁drive ▁applications ). ▁With ▁tw in ▁Hit achi ▁s ided raft ▁car b ure t ors , ▁a ▁longer ▁duration ▁cam sh aft ▁and ▁ 1 0 : 1 ▁compression ▁ratio , ▁it ▁delivered ▁ ▁at ▁ 6 4 0 0   r pm , ▁up ▁ 2 0   percent ▁from ▁a ▁standard ▁A 1 2 ▁engine . ▁The ▁G X ▁engine ▁was ▁offered ▁in ▁Japanese ▁Dom estic ▁Market ▁N iss an ▁Sun ny ▁ 1 2 0 0 ▁G X ▁sed ans ▁and ▁coup es . ▁The ▁identical ▁specification ▁A 1 2 T ▁engine ▁was ▁offered ▁in ▁the ▁front - w heel - drive ▁N iss an ▁Cher ry ▁X ‑ 1 . ▁ ▁An ▁over bor ed ▁version ▁of ▁the ▁A 1 2 ▁was ▁used ▁in ▁period ▁race ▁cars , ▁including ▁N iss an ▁factory ▁( works ) ▁racing ▁S unn