Nialls supercharged GTi6 - project tidy up

[Ruan]

And all that is true but the point I was making about hot spots being reduced is due to the raised boiling point.

Agree with the GTi6 should run at 83*C - but the hotspots being reduced by Anti-Freeze in the system isn't true - soon as you increase the pressure in the system, the boiling point increases also.

Not being a cock here, but...

You should never be to the point of nucleate boiling in an engine, if you're having to use Anti-Freeze to prevent Nucleate boiling, you've got far bigger issues. To overcome that, you'd need a good 50% increase in specific heat capacity of the entire cooling system (i.e. system capacity & flow) to remove the heat since at 50/50 Anti-Freeze mix, you've dropped your heat capacity of the coolant by 25%.

I'm sure you see my point, if you're struggling with the cooling system removing heat with no Anti-Freeze in, adding it will only make things worse since at 83*C you should never be hitting the boiling point at any area inside the engine - going from your average 83*C coolant to >105*C on the cylinder walls - not going to happen unless you've got real problems