was 77 mm (3.3 in). It was a 2-valve SOHC like the 1A and 2A. There were California-spec ( 3A-C ), Japan-spec ( 3A-U ), transverse ( 3A-L ), and swirl-intake ( 3A-S ) versions of the same basic design. Power output ranged from just 62 hp (46 kW) at 4800