Honda of America Mfg.’s Anna, OH, engine plant, the automaker’s largest engine plant in the world, celebrates the 25 millionth engine produced there since it opened in 1985. Honda recently invested $47 million in the Anna plant for the introduction of the new engine lineup for the ’18 Honda Accord, including two new, direct-injected VTEC Turbo 4-cyl. engines and the 2.0L i-VTEC Atkinson-cycle engine for the…