RE: Weed wacker motors?
I'm down to 2 pounds 3 oz, and probably a little less. last time I was into that engine I don't remember noticing that the ports are about the size of a normal nitro .46...
it also turns out that the piston/jug are scored in a couple spots, which would explain some of the low compression... I'll clean them up a bit and see where it gets me, makes me worry less about screwing it up porting it... do you think this thing would benefit more from increased port size or duration? or both? the exhaust port seems to take about as much room as it has available width wize, but could go up without a problem, the intake could be a lot wider and still be fine and could go down without problem, the transfer ports look decent, but didn't check out their timing...