Quote:
Originally Posted by citcapp
Looking close at the pictures it looks like heat stress cracks are all around the hole with dark discoloration. Did the tranny fluid smell burnt and was it dark brown in color. Lots of hard use with no care can cause heat fractures in the alumimum  
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You got that from a couple of somewhat out of focus pictures? I wouldn't read too much into those photos. The "cracks" are pretty typical of normal cases I've seen and are the result of the casting process. The discoloration in the cracks is also pretty typical.