Putting a motorcycle engine in a car may sound like a completely crazy thing to do, but there have been a surprising number of times it has happened. The results come in a variety of shapes, sizes, ...

The BMW HP4 Race is engineered as a track-only machine that pushes performance to the limit. Underneath the carbon fiber frame (which might be banned soon) is a hand-built 999cc inline-four that ...

The story of how Honda developed an oval-piston race engine that ultimately failed but still made history along the way.