A good friend recently passed and I have a chance to buy his 113 inch S&S Evo engine. He bought it at the Denver swap meet some years ago but never ran it. Its supposed to be new and never ran. I called S&S and the engine number indicates it went out the door in 2000, is a 4 and a half inch stroke by 4 inch bore. It seems this engine was discontinued not long after and replaced by the 111 inch engine. I asked around and local mechanics say this under square engine is known to vibrate and have a short life.
Does anybody have any experience with this engine? Thanx in advance