it was a creaking / chattering noise upon a cold startup
it was very appearent that something was making noise on the front of the engine
when I got it out it bearly spunand the cracks were almost to the outer edge about 180 degrees apart
I would say if you have over 100k just change the belt and all the pullies for the belt. they had worn down anyway and the belt wasn't centered on the cam gears anyway
