Originally Posted by
Crash one
The honing would have to be extremely course and exactly square to the bore to have that effect. The hone would have to be held stationary for some time to produce grooves that bad, requiring incompetence of biblical proportions.
No, I don't think so. The honing angle can be quite critical and ninety degrees isn't the critical angle, it's much less. I always understood that it ought to be 45 degrees and anything shallower is less than ideal. Maybe a misunderstanding like that has caused the problem. But then, I'm just an amateur engine builder who likes to read up the theory, so what would I know?