Ring Gap?

RAMM said

The KB's have a lower top ring placement--KB's ring gap requirements are not based on the ring groove placement. Its the alloy. KB's get a bad rep from some and yet the only KB I've ever seen broken was my own and I knew I was hurting it when I had my foot buried and could hear the "can full of marbles" . High load and thus high heat will exceed KB's ring gap spec's in a hurry.

To the OP--I hope you were able to put a nice cross hatch on the cyl's and limit taper. If you used a rigid hone like a Sunnen AN series then your job was much easier--If you used a spring loaded 3 finger deal then I strongly doubt you will have much success. J.Rob

Click to expand...

Actually when I spoke with the KB on line tech he mentioned the high top ring location as being the reason for the larger top ring gap. He said that in operation the heat will cause the top ring to expand and the ring gap in
operation will have near the same gap as a typical top ring. The second rings gap installation recommendation is about the normal ring gap to bore size ratio.
It seems to me if the piston was expanding it would be the piston to bore size ratio that would be significantly adjusted and result in a larger piston to bore clearance at installation. And as the piston expanded it would take the piston ring with it and enlarge the end gap,,,