Careful, with that wiseco formulation, something is “fishy”, or my math is way off.
0.04 % of say 2 inch bore is only 0.0008 inch, way too small
and in the other interpretation of the formula … 0.04 X 2 inch = 0.080 inch , way too big
Joe B
PS, I just looked at air cooled small engine repair manual , typical ring end gap listed is 0.010 to 0.025 … and that is for air cooled engines, I think that on water cooled engines the tighter end of the range would be OK
