What causes rod chucking and headgasket blowing?

[Flynn]

More boost increases the cylinder pressure

As most people know it's not just about the "PSIzzzz blud" it's also about flow.. Peoples cars have chucked rods at less than 20mph in some cases so it's not exactly as if they're under high stress

Cylinder pressures can still be high at 20MPH. Also having a turbo that can flow more air at less pressure will cause lower cylinder pressures than a smaller one which needs to compress it more and therefore raise the cylinder pressure and intake temperature.

So essentially I am correct :dance: