jamesmartin
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2 thou is plenty so should be good ,some often just but a cross hatch on top of bored surface which doesnt remove all tool marks 320 grit was what i used to use ,and plenty of thinners and paper towel to clean after2.5/1000 for the honing. The cross hatching gets down to silly small sizes at 25Ra which apparently wears down to 20Ra within a day of use. Out of interest I'll keep an eye on the oil filter and see if it picks up anything chunky after a short while, but at these small measurements I wouldn't expect to see anything without a microscope.