Honing an engine block is a critical part of the process. The key to optimal ring support and oil retention is a proper honing job on the cylinder walls. This all comes down to the depth and angle of the crosshatch used. It is necessary to create a crosshatch that allows for some oil to be held as the piston rings slide past, but not too much to damage them. For this reason, make sure to visit a reputable machine shop for this process, and ultimately, all of the machining.