well I might sell the motor that I worked on for 5 months, its a 140cc OGM that has a race head that I paid 250 bucks for its got bigger valves 28/24, race camshaft, heavy duty valve springs and has had light porting done. The piston is a 55mm akunar with a 8.5mm dome on it, the piston was sent out to get coated (molly skirts all the way around, and ceramic dome), the cylinder was also decked 1mm to better suite the piston. I also have a 26mm oko carb on it, and a d section exhaust and let me tell you this engine is not for the in inexperienced it freaking flys you have no idea I wouldn't be scared to race cars

and it has a lot of compression no leaks. I have put about 7 tanks of gas through it and its running 100% perfect, you can still see the cross hatch pattern in the cylinder as well. I can guarantee everything has been done properly as I have put about 1500 of my own money into this engine. I made sure everything was done proper. There is tons of clearance between the valves and piston. I promise you a good strong engine, I want to sell it to someone that will take care of it. I ran mineral oil for a bit and recently threw in some amsoil 20 50. I also got the head spark plug hole re threaded since I stripped it. The heli coil insert is brass, its a lot stronger then the aluminum. I want $600 for the engine, thanks