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check out this hole in my cylinder head oops

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Norcalgsx707

10+ Year Contributor
564
0
Jun 28, 2012
lake county, California
Pulled the head and wanted to know if anyone gots any idea how this monster hole was created?
 

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above, and add a lean condition that acted like a torch in that spot.

That can be fixed if you really wanted to save that head for some reason, port work would be the main one. if it is stockish, replace it.
 
Definitely looks to be from a blown HG. It seems like one of the hole was expanded by massive force. Chuck it and get a new one.
 
Ouch, that sucks! I have an extra 95 GST head in parts car.
 
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