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.

How do you calculate a compression ratio, and what’s the ideal number for your build? Let’s find out.

You’ve heard the term compression ratio before, but have you ever wondered exactly what it means? Well, it’s time to explain exactly what compression ratio is, and why every carmaker is now ...

In Two Stroke Spark Ignition engines the thermal efficiency increases with increase in compression ratio. Also, with higher compression ratios the lean burning limit increases because of the reduction ...

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

All this originated with our first Agent 87 engine when we combined an 8.75:1 static compression ratio with a Comp Cams Xtreme Energy camshaft. This combination looked good on the dyno and made ...

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

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.

Infiniti will showcase its new variable compression ratio engines – the world’s first in series production, it claims – at the 2016 Paris motor show. Badged VC-T (Variable Compression ...

In principal, the engine changes compression ratio simply by altering where the cylinder's top dead center is.