Boil together the water and sugar.
Add juice of the 8 lemons.
Cool completely before refrigerating.
Refrigerate for several hours.
Slice off a thin slice of bottom of lemon, so it can stand. Freeze the lemon shells.
Mix together the simple syrup with 2 cups of ice cold water, making sure you have at least 3 cups of liquid in total. Do a taste test. You can add more water if taste is too sweet or too lemony.
Add water until you get the taste you like.
Run through the ice cream machine according to directions for about 20 -25 minutes or until the consistency is right.
Fill into the frozen lemon shells. Wrap in plastic.
Freeze for at least one hour before serving.