If I may offer some machining wisdom, boring to .010 over and leaving enough to hone to finish is simply impractical and on the other hand honing to bring to .010 over is possible but will easily leave an inconsistent bore. A professional honing machine will do it, yet for the reasons stated above, .010 over pistons are basically rare. I have seen and had .030 overs (a .010 increment) but that was for a bad stock bore that need to go past .020 over.Mark F said:Anybody know a source for +10 pistons for an 850. Prefer Hepolites if possible but anything considered.
Thanks in advance.
Mark.