sweet so acetone it is.i guess and ya pistons are still in the block just took the head off putting a new one on it.carbon isn't to bad just figured mite as well do it while i'm there.and THANKS for the help.oh ya and what will carburater cleaner do?just in case a guy has already tried it?not pointing any fingers though. <img src="/forums/images/graemlins/lol.gif" alt="" />