my O-320 now has about two hours on it. I cut the oil filter and found some metal flakes. They look to be about .001" in size. I have 60's vintage steel cylinders with cast iron rings. The boring and honing was done 20 years ago, so a course hone, not the finer hones used today. These flakes seem normal to me for an initial break in run on a course honed engine. My partner thinks they may be too big.
Looking for an opinion from an expert. Hopefully this picture helps.
Thanks for your assistance.
Larry
Looking for an opinion from an expert. Hopefully this picture helps.
Thanks for your assistance.
Larry