I tried to get the builder's view on that for my jeep's 360 and got a pretty vague answer. Figured it was best to assume the rings might need conventional. Stock cam, 0.30 over, just a rebuild.
It depends a HUGE amount on the cylinder finish. If the machinist is using vitrified abrasives, it will take different techniques to get the correct finish than if he is using Diamond abrasives. And if they use a brush finish, a CBN finish or a combination of both.
What’s crazy is I’ve seen profilometer readings change a significant amount with 3 strokes of a finish brush. I’m mean a big move.
So if the machinist isn’t using a profilometer then I’d certainly start out with mineral oil and leave it in there for 500 miles. You can ***** up a set of rings right quick if the machinist isn’t careful.
I used to think I could hone a cylinder about as good as it can get. After watching a Rottler CNC hone, with a ball drive head finish a bore, I can’t even get within a country mile of that machine. Not even close. It’s that good a machine.
