timing chain rubbing on cover

AJTorris

New member
Ok so if I rev my 4.0 and let off I get a metalic noise of rubbing. Theres wear,marks,on my timing chain cover. Brand new long block. I got this through warrenty. Thought old one had a spun bearing. But aparently not. Its my timing chain cover. what would cause the chain to rub the cover?
 
Top