Originally Posted by 64nailhead
In you original post, you said you're looking for some more torque and longevity. If you have vertical scratches and you do not bore, then you are dramatically cutting into the longevity.
Not just longevity but torque as well, without good ring seal your power will be going out the crank case breather, and the oil consumption will mess with your burn.
A well sealed cylinder is like the foundation of a house- without that the rest is for nothing.