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 ...

Since cam selection is largely determined by the other two factors, you need to know how to calculate your compression ratio and freeway rpm. We′ll show you how it's done.

By C.J. Baker The true compression ratio of an engine is a critical factor with today's low-octane gasolines Shown here are the component volumes that comprise ...

Now that we know how to calculate a compression ratio, let’s dig a bit deeper into what compression ratio physically means when applied to a cooling system. In reciprocating compressors, there must be ...

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 ...

The compression conundrum: How to measure what’s really happening Over the course of testing, we had to make several passes at testing how these application-acceleration devices use compression ...

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

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