As such, some engine designers are seeking instead to build ICEs that are lighter and more fuel-efficient than those from generations past. One of those outfits is Avadi Engines Inc. based in ...

The prototype Avadi is a 250 cc engine that produces 30 Nm of torque at 3,500 rpm and 15 horsepower at 3,700 rpm. That sounds meagre, and compared to current water-cooled 250 cc engines with ...