Nissan brought the first, and only, variable-compression engine to market. But its future doesn't look bright. Complexity in cars is a funny thing. It’s tempting to say that it’s all bad, that more is ...

Nissan made a lot of noise when its variable-compression turbo engines hit the market a few years back, snagging awards and headlines left and right. However, those two power plants—the 1.5-liter ...

Today's low-octane unleaded gas mandates a compression ratio reduction for '60s supercars. The easiest way to lower compression is usually to swap on late-model heads; not only do their larger ...