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 ...

This engine has an 8.84:1 compression ratio. When using this formula, make sure to express domed piston cc's as a negative number.

The MCE-5 engine from MCE-5 Development in Lyon, France varies its compression ratio and uses a combined gear and rod-crank mechanism.

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 ...

Why variable compression ratio matters Today's gasoline-engine cars compress the outside air to about a tenth its original volume, a 10:1 ratio, inside each cylinder.

Variable Compression Ratio Engines have been some sort of a Holy Grail, and now Porsche proposes a viable solution for this ...

Mazda‘s upcoming SkyActiv-G engines will get a 14:1 compression ratio, the highest in the world for a gasoline engine, according to a report in Autoweek.Most cars run compression ratios of 8.5:1 ...

How to Calculate Compression Ratio from Scratch As an example, let's calculate the CR for a popular big-block Chevy application.

Why variable compression ratio matters Today's gasoline-engine cars compress the outside air to about a tenth its original volume, a 10:1 ratio, inside each cylinder.

How to Calculate Compression Ratio from Scratch As an example, let’s calculate the CR for a popular big-block Chevy application.