Assuming a properly tuned engine, there are three factors that contribute to poor streetability: long cam duration, high compression ratios, and excessive cruise rpm. Since cam selection is largely ...

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

At first glance, the concept of engine compression is simple enough:It's the ratio of the volume of the combustion chamber and bore when thepiston is at bottom dead center (BDC) versus when it is at ...

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

An unconfirmed theory about how Mercedes and Red Bull have circumvented F1’s power unit compression ratio regulations has ...

A revised test at 130°C aims to end off-season speculation — but could shift the debate into 2027.

Rivals push the sport’s governing body into a midseason tweak as a dispute over compression ratios spills from the garage to ...

You'd think that the pistons listed for a 10.5:1 compression ratio would actually give you 10.5:1. But it's usually not that simple. Perhaps that's why so many four-wheelers have a foggy or incomplete ...

George Russell stormed to victory with Mercedes in the first race of 2026 ...

"Making horsepower is all about building adequate cylinder pressure," proclaimed Mike Dezotell of Dez Racing, as we embarked on our latest adventure into the world of compression ratios for boosted ...