**do not buy blueprint engines***

[67ranchhand]

Just a thought, are you sure this is the engine you purchased? Was the vendor a reputable company? From the pictures, this engine has a lot of carbon build up, dark colored oil stained pistons, and a ring around the top of the cylinder bore. I have built engines, ran the crap out of them in a demolition derby, tore them apart, and have looked better than this. Just saying, it may or may not be a blueprint engine. Check every option possible.