If you overbore our sample 350 from 4.00 inches to 4.020 inches and make no other changes, the compression ratio will increase from 8.84:1 to 8.90:1 because the volume of the cylinder has increased.

HOW TO CALCULATE COMPRESSION RATIO. Compression ratio is a fixed relationship of cylinder volume with the piston at bottom dead center (BDC) divided by cylinder volume with the piston at top dead ...

Knowing how compression ratios are calculated and work can lead to more horsepower on the track and more appearances in victory lane. Find all the details inside Circle Track Magazine.

Calculate compression ratio and determine what it means. By John Tomczyk. August 7, 2017. The capacity of a compressor can be affected by a refrigeration system’s ever-changing pressures. In addition, ...

Compression ratios usually range from 8:1 to 10:1. A higher compression ratio -- say, from 12:1 to 14:1 -- means higher combustion efficiency. Photo: Sébastien D'Amour: The benefits ...

The "Mods for 2V Mods" series in our sister publication, Muscle Mustangs & Fast Fords, took a hard look at the effect of changes in compression ratio on a two-valve 4.6L GT motor. The idea behind ...

Compression ratio is just the difference between the biggest and smallest volume in a cylinder. Smallest is when the piston’s at the top, biggest is when it’s at the bottom. So if the volume ...

The new Infiniti VC-Turbo engine (code-named KR20) is chock-full of interesting details that come with its variable-compression-ratio trick. Click on through to demystify the unique operating ...

Fixed-compression-ratio 2.0-liter turbocharged four-cylinder engines, which have become the go-to powerplants across wide swaths of today’s automotive landscape, generally have a compression ...

Its 'Variable Compression Turbo' engine was unveiled in late 2016 and, like the Saab, offered a compression ratio that ranged from 8:1 to 14:1. This engine ultimately made it into production in ...