the engine was rebuilt probably 10,000 miles ago and they said they shaved the head and worked on the block. They did a crappy job with everything though. Didnt replace many parts that they said they did. They even put the old tc and tensioner back on the new engine. Still pisses me off thinking about it. Now that ive been into this engine so much fixing their problems, i believe I couldve done a better job on such a simple engine. But i dont know if they put a spacer or anything in there. When i put the new chain kit on, the tensioner was extended at least halfway if not more. Thanks guys!!!!!!