Scale model Harley Pan Head Engine Makes All the Right Noises Scratch any car or bike enthusiast and, underneath, you'll likely as not find a passion for anything that runs on petrol.

This 290+ piece 1:4 scale model kit requires three AA batteries, but don't worry about any glue, not needed for this superb flat-six scale model engine. The real 2.0-liter flat-six engine in the ...

To celebrate the occasion, MZ Racing is offering a detailed 1:6 scale model of the four-rotor R26B engine in race specification that’s selling for ¥179,300 yen ($1,579).

A project that demonstrates this in spades is [mayhugh1]’s quarter-scale model of a vintage Rolls-Royce Merlin V12 piston aero engine.