Quick hone (20-40 sec) with some cutting oil is normally fine. Just roughen up to help seal the rings.
Just think of it this way, take a sharp knife and draw it across and oil stone. Home many strokes does it need to sharpen, 6 or 12. Same with and engine, the stone tears the liner microscopically, a few slides of the piston rings beds them in .
Seen some aero engines documents where they 'lap' the rings in by hand with a piston lapping jig.
Have 2 CB125 twins and one is bored to 150 cc. I need to do my magic on the motor but that will be good for 14000+ .
Will do. Honing will also help keep oil film on cylinder wall.
I also like to play with vintage Japanese bikes, I have a TX750 Yamaha and a CB750 K1.
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