There's more to piston shapes than you might think. Whether it's domed, flat, or dished, all pistons have their fair share of pros and cons when it comes to performance and efficiency. Understand that ...

The Commer TS3 engine, built for Commer trucks from the '50s into the late '60s, didn't conform to design conventions of the time. Where most engines follow familiar blueprints with one piston per ...