An engine's displacement and compression ratio both play a big part in determining how much power it makes. Here's how the ...

With every passing day the Mule provides opportunities beyond our original expectations. Since the 467ci engine belongs to HPP editor Tom DeMauro, it is at our beck and call. This affords HPP the ...

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 ...

DeltaHawk Engines of Racine, Wisconsin, said May 18 that the FAA has certified its DHK180 jet-fueled aircraft piston engine. The privately held company, founded in 1996 to develop a clean-sheet design ...