Yeah it is a gokart. Single cylinder. The person that rebuilt it before me did a horrible job. The first thing I did when I couldn;t get the piston off was to crack the case and take the rod off...well BOG...your right it wont come off. Im thinking that I need to take it to a machine shop and have them press it off. SHouldnt be too much work for them. I hope they dont charge me too much. Thanks for the help!!