Bruce ( Shrinker )

Hysteric said

Does camshaft profile relate to the valve curtain area's effect on the vaporization rate and droplet size considering piston speed influences the vacuum generated in that area?

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The camshaft profile greatly effects the vaporization of the fuel,especially in low load driving.There is potentially a large amount of vacuum generated as the intake valve lifts off the seat area and its this area where a lot of vaporization takes place.You can kill this area real quick when you change cam profile,speed of lift etc..
You can tan a plug on wide LSA cams real easy even at idle if you get the fueling correct.narrow lobe cams need a lot of comp and good fuel.
Fuel is such a key component to it all,the quality that is.
The inlet valve closing point in relation to piston speed will determine the first stage of compression,whether it is slow or fast.The energy that is added to the fuel molecules in the first stage is very critical.