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 m ...

“Too little compression will usually result in unmet performance expectations. On the high side [too much compression] carries greater risk in tuning and potential component failure if appropriately ...

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

A compression ratio calculation is pretty straightforward, but involves a little math. So, grab your calculator and let’s crunch some numbers.

F. G. Wirbeleit, K. Binder, D. Gwinner, Development of Pistons with Variable Compression Height for Increasing Efficiency and Specific Power Output of Combustion Engines, SAE Transactions, Vol. 99, ...