Ok. So after retesting the engine, I discovered that the 168psi reading was incorrect. Great. So I have decided to replace the water pump, and the O rings on the Y pipe behind the water pump, because they're leaking so bad, and to properly pressure test the cooling system, to see if the head gasket is compromised between the water jacket, and the oil galley. Fast Forward. While replacing the flange gaskets on the water pump bypass, one of the new bolts that I was screwing in (grade 8.8 btw), snapped it's head. And then while attempting to extract the bolt with a bolt extractor, the extractor broke off in the bolt. So in a word, this sucks. I've tried taking cobalt drill bits to it, and that has not done a thing, except dull the bits. Does anyone have any ideas here? I'm tempted so far to call up a mobile car repair place, to see if they can remove the stud for me. Especially since it's so accessable. Otherwise, if I could find like a hollow bit (like a hole saw) that could cut into the bolt, and bore around the broken extractor bit, I'd could knock it out of place. Does anyone know if anything like this exists? -Robert vin 6585 "X" To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/