Hello, new to this forum, looks like some good info here. I have a SDG 107 3V motor, thinking of improving it's output a bit. What would the max stock revs be, and, if I manage to make it rev more, what is the limiting factor, like, what will break first, and at what revs? Also, will the stock cam timing limit it's ability to rev more? I measured the intake lift at the valve and it's close to 0.300", seems like it should be able to breathe well as it is now. Thanks to all.