well I think I found the problem.Looks like somebody changed the guides and left the old chain on .guides look new ,but the cover has been cut by a chain at some time.Lot of slack in the chain.also looks like a water pump scored the cover at some time.Cant figure it out,chain was 1/8" longer than a new one but guides were fine.hope thats all it is ,Ill know when I get it back together.Think Ill take the time to drop the pan and look for junk in there.Is it possible to check the pan without dropping the front axle.All I can say is "why" would they do this?Now there is no doubt in my mind what a chain rattle is. <img src="/forums/images/graemlins/notooth.gif" alt="" />