Squish VS Compression In A 500HP Hayabusa V8 Engine
The RPV8, a 400-500HP Suzuki Hayabusa based V8 engine, is used as an example to help explain compression ratios and squish with James Pinkerton of Radical Performance Engines.
The N/A Hayabusa V8 used in some Radical Sportscars models runs a 12.5:1 to 13.5:1 ratio on 98 RON pump gas, with only the higher ratio becoming prone to knock, aka detonation, before minimum timing for best torque (MBT) is reached. In this interview James explains why he would choose more ‘squish’ over a higher compression ratio along with exactly what squish is and why it is so important for a complete fuel burn not just to make as much power as efficiently possible, but also to reduce the chance of detonation which can cause terminal damage to your engine very quickly in some circumstances.
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