The Honda Civic Si combines an underused transmission option, decent speed, and a relatively fuel-frugal - it's not a sedan ...

Borrowing the 1.8-liter engine from the Celica and MR2, the pocket rocket received a Toyota Motorsport turbo kit. This kit bumped output from the regular model's measly 68 hp and 69 lb-ft (93 Nm ...

The costs of printing a rocket engine are only bound by the volume of the finished piece, meaning the most expensive engine per unit of thrust is the one that will fit in your pocket; scaling up ...