I think you might have the events a little off and I think my math is sound...
It's a small cam so I don't think it's opening during the exhaust stroke. If that's the case & using these numbers: intake opens 22.5 ATDC, int close 62.5 ABDC
exhaust opens at 62.5 BBDC and close 22.5 ATDC
Doing the math on the intake stroke: 180 - 22.5 = 157.5
157.5 + 62.5 = 220 / 2 = 110°
On the exh stroke: 62.5 + 180 + 22.5 = 265 / 2 = 132.5°
overlap is 0.
