Update Mission Raptor
Well early this morning (I'm retired) I took off the side case. Couldn't find a crack , still stumped. However did find an ARC rod! The guy if he built it used a lot of Raptor parts, down to the pull start. I seen the two holes for the on/off switch. Carb is Raptor, head is Raptor. Next I am going to mic the valves and piston. The flywheel in the pictures is not aftermarket it's not aluminum. My conclusion is if he did indeed build a 5hp block he spent to much time and money. Could have just bought a Raptor block added the parts? I don't know? .For what I'm going to use the motor for again I'm retired, is riding around, race it once in awhile, show it. I spent a lot of time in painting the frame, flaming the fenders and chain guard. And buying a motor with some balls!:laugh: Thanks to all if anyone wants to add some more opinions, I read everything and think about everything I'm told. OH I would like to thank OldMiniBikes for turning me on to this forum- it's cool! I will me reading on and asking questions :thumbsup: