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's next-gen hybrids will get a brand-new engine, and the Japanese automaker isn't holding back on the tech innovations.

So I found this guy selling a slightly used BMW stroker motor. 3.0 now a 3.4 via big crank, 10:1 compression lightened pistons, 15% flow increase on ported/polished head, mild cam, and a bunch of ...

The compression ratio isn’t just a number: it’s one of the greatest determining factors in engine building. Compression ratio determines the type of fuel, how much boost, and has a significant ...