That engine had a static compression ratio of 9:1, used a whopping 25 psi of boost, and came up with an ECR of 24.3:1. That engine ran on 118-octane race gas and had no detonation issues, at least on ...

We might be covering ground that's well trampled for many, but the static compression ratio of an engine is simple to understand: it's all the volume of a cylinder above the compression ring at Bottom ...

In a conventional piston engine, the compression ratio defines the relationship between the largest and smallest volume of a cylinder - when its piston is at bottom dead centre and top dead centre ...

Nissan’s variable-compression turbo (VC-Turbo) is a unique engine capable of variable compression adjustment. Unlike traditional engines, which have a fixed compression ratio, the VC-Turbo engine ...

In our previous adventures with Mods for Mods, we subjected our '98 4.6 two-valve GT motor (supplied by Mustang Parts Specialties) to all manners of abuse. The early short-block went through cams, ...

A refrigeration system’s compression or pressure ratio is defined as the absolute discharge pressure divided by the absolute suction pressure. Calculating this ratio can be a big help when it comes to ...