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
My rule of thumb has always been .003 to .004 per. inch
when not having a factory spec.
I believe 1% of an inch in .000 is .010
I interpret fifty20ne’s speck. to mean 4/10 of 1 % to
5/10 of 1 % which would be .004 to .005 end gap per. inch.
After seeing Bucks chart I will now use this as a guide
for 2 strokes when not having a factory spec.
“Typical ring end gap listed is 0.010 to 0.025 for air
cooled engines”. ??????
I can imagine what a 10/1000 to 25/1000 end gap would
apply to.
Tubs.
A "Boathouse Repair" is one thats done without having tools or the skills to do it properly.
