Milling the Head

[toki]

Since no one wants to answer in the 240 general section, might as well ask here:

I know when you mill your head it provides a smoother contact surface between the head and block, but i hear it can also raise/lower compression quite a bit, like .5:1+. On a KA24E exactly how much compression would be added for milling it say 1/1000, as apposed to say 8/1000? I am not sure yet what I am doing with this motor, it does need a rebuild though regardless of NA or turbo in it's future. So the pistons I will be choosing will come into play very soon, and I will need to factor in the amount of comp added from the milling.