Water Pump - Snapped Bolt

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HT4100 4.1, 4.5, 4.9 Discussion, Water Pump - Snapped Bolt in Cadillac Engine Discussion; 1993 Cadillac Eldorado 4.9L 195k miles ...arrghh...I replaced the water pump this weekend that had 100k miles on it. Got ...
  1. #1
    kdcing is offline Cadillac Owners Fanatic
    Automobile(s): 1993 Eldorado, 4.9L, 200k miles
    Join Date
    Dec 2006

    Water Pump - Snapped Bolt

    1993 Cadillac Eldorado
    195k miles

    ...arrghh...I replaced the water pump this weekend that had 100k miles on it. Got it almost all back together and the last "dang namit" bolt/stud snapped on me. Since the job was more-or-less completed, I decided to button her up and hope for the best (i.e. hope for no leaks, steam or otherwise bad stuff).

    Well, I drove 30 miles @ 35mph and another 50 miles on the highway...so far I haven't had any leaks. I still would like to get this thing repaired properly...thus this post to the group.

    The fastener that snapped is the 3rd fastener from the upper left corner (if you are looking at the H2O pump from the front). The 1st fastener in the upper left corner is a large hex head bolt, the 2nd and 3rd are studs w/ 10mm hex nuts..the 3rd one is the buggered that snapped...and it snapped pretty much flush to the block (or at least flush to the plate that is behind the water pump).

    Does anyone have an idea on the proper fix for the snapped stud? The area around the fastener is so tight that I cannot fathom any idea on how to get a drill in there to drill it out....short of pulling the whole engine out. The car has 195k miles and many dents, so there is no way that the investment will be made to pull the engine. Any ideas are appreciated. If there are no ideas, I'd appreciate anyone that would hoist a Pabst Blue Ribbon in honor of the Eldorado that may soon be headed to the crusher!

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  3. #2
    ehall's Avatar
    ehall is offline Cadillac Owners Connoisseur
    Automobile(s): 1985 Sedan DeVille
    Join Date
    Aug 2007
    Southern Maryland

    Re: Water Pump - Snapped Bolt

    If you can't fix it right, I'd say see how it goes, and if it develops a bad leak then you may want to try some kind of heat sealant and junk it when the current one blows up again. If she doesn't pour out, you could use it for a trade and tell them there is a broken bolt--they might be able to fix it with in-house people.

  4. #3
    awadecki is offline Cadillac Owners Enthusiast
    Automobile(s): 76 Eldo (54k), 76 Eldo (52k), 78 Eldo (9k), 85 Deville (43k)
    Join Date
    Jun 2005

    Re: Water Pump - Snapped Bolt

    Might be able to rent a right angle drill and drill it out. Then retap.

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