I recently picked up this go cart for free wanting to get it running for kids to mess around on. From what o have seen this is a 2 stroke motor, hence the oil injection tank. The shaft to crank case length is also 7inchs, compared to the 9.5 inches on the 150cc motors. Also this motor has a disc brake on the rear axle and the 150cc motor I have seen seem to have drum brakes on motor shaft.All I'm after right now is a motor to fit this thing and get ball rolling on fixing it up. I have attached pics to see what I'm working with.