Every car engine has quite a few details, ranging from cylinder count to compression ratios. How does changing the ...

You might have heard about high compression ratios, but what exactly are they, and what kind of effect do they have on an engine's fuel efficiency?

We all know the age-old maxim, "There's no replacement for displacement." It's the truth. That's why so many sanctioning bodies use displacement and compression rules to limit engine power. Of course, ...

Apart from the very curious, not many people ask why diesel engines, compared to gasoline, run higher compression ratios. The argument is reasonably straightforward and starts with fuel ...

Daniel Stafford;Nicholasville, KY: I've looked all over the Internet and asked the opinion of everybody I can think of, but I can never seem to get a definitive answer to my question. What is the ...

Changes to compression ratio tests will be introduced in the summer after a lot of focus on Mercedes' new power unit over pre ...