Assuming a properly tuned engine, there are three factors that contribute to poor streetability: long cam duration, high compression ratios, and excessive cruise rpm. Since cam selection is largely ...

Strictly defined, compression ratio is the total volume above the piston at bottom dead center (BDC), divided by the total volume above the piston at top dead center (TDC). First, let's look at the ...

You'd think that the pistons listed for a 10.5:1 compression ratio would actually give you 10.5:1. But it's usually not that simple. Perhaps that's why so many four-wheelers have a foggy or incomplete ...

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 using ...

A single line in the technical regulations has sparked months of debate — here’s how the compression ratio saga unfolded and ...

Mercedes boss Toto Wolff has dismissed Formula 1’s escalating compression ratio controversy as “a storm in a teacup”.

Harry Ricardo built the first known variable compression ratio engine as a test engine in the 1920s to study knock in aircraft engines. Variable compression ratio was achieved by raising or lowering ...

A simmering technical row in Formula 1 is hurtling toward a decisive moment, as the sport’s five engine manufacturers prepare to cast votes.

Steve Nielsen believes a late engine rules change for F1 2026 would set a dangerous ...