[Homeoboxter]

Originally Posted by marsheng

One of these will do, https://www.toolfactory.co.nz/products/ampro-3-jaw-engine-cylinder-hone-50-175mm-75mm?variant=39640318349&gclid=EAIaIQobChMIhN7U-pyL4AIVCSQrCh33Mg57EAYYAiABEgK7IPD_BwE

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.