Technical specification: Modified 1974 Mini City

摘要

Road engine: 1275cc A+ bored to 1380cc. 73.5mm Hepolite press-pin pistons. 36mm inlet, 29mm exhaust valves, hardened exhaust seats. Piper 270 cam. early pressed steel 1.3:1 rockers (welded, lightened). A+ crank, wedged, mirror finish polished, balanced at home. lightened, balanced, mirror finish polished con rods (each 100g lighter than standard). lightened duplex timing chain. lightened pre-Verto cast iron flywheel (a third of original weight removed). flowed slot-drive oil pump. lightened cam followers.