Northstar Head/Engine removal - Page 2
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Northstar Engines and System Technical Discussion Discussion, Northstar Head/Engine removal in Cadillac Engine Technical Discussion; Yes, yes, yes, 54,407, considering it, not really, I have & that's part of why I'm taking a chance on ...
  1. #16
    sundog is offline Cadillac Owners Member
    Automobile(s): 1999 DeVille D'elegance
    Join Date
    Aug 2012
    Location
    Newton, Kansas
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    Re: Northstar Head/Engine removal

    Yes, yes, yes, 54,407, considering it, not really, I have & that's part of why I'm taking a chance on it.

    It's been sitting under trees in Dallas; there are a couple of small paint chips, 3 small parking lot dings, 2 very small dings in the trunk lid (hail, i think - a dry ice fix?), flaky chrome on the bead seat of the rr wheel (wire brushed it; it will now hold air at 35psi, but not at 25), some small gouging in the centers of two of the wheels, & some scuffing on top of the rf fender which I think will polish out. There is also some slightly noticeable gouging in the right plastic taillight moulding showing the car wasn't deep enough into the garage when the overhead door was closed. I washed it and in spite of these details the car looks quite good, and I don't think I'll have much trouble caring for most of them.
    The interior is perfect, needs cleaning and that's it.
    I met with a fellow from Wichita yesterday who is reputed to be perhaps one of the most knowledgeable and competent N* people around (and, small world that this is, the business partner of a long-time good friend). He hasn't seen the car, but we discussed it at length and developed a diagnostic plan. Based on my description, he 1) isn't convinced the head gaskets are bad, 2) detailed a fix if they are, and 3) has a couple of motors on pallets just in case my problem goes beyond anything anticipated, neither of which he would install without re-threading even though they're in fine shape.
    I'm going to dive into this as soon as I clear the desk of a couple of crises.
    A week ago, I considered following the advice of every one I know and running from this thing. I'm now somewhere between cautiously and somewhat confidently optimistic.

  2. #17
    89falcon is offline Cadillac Owners Fanatic
    Automobile(s): my wife crazy, 1997 STS, 2004 CTS
    Join Date
    Apr 2011
    Posts
    207

    Re: Northstar Head/Engine removal

    Quote Originally Posted by sundog View Post
    Yes, yes, yes, 54,407, considering it, not really, I have & that's part of why I'm taking a chance on it.

    It's been sitting under trees in Dallas; there are a couple of small paint chips, 3 small parking lot dings, 2 very small dings in the trunk lid (hail, i think - a dry ice fix?), flaky chrome on the bead seat of the rr wheel (wire brushed it; it will now hold air at 35psi, but not at 25), some small gouging in the centers of two of the wheels, & some scuffing on top of the rf fender which I think will polish out. There is also some slightly noticeable gouging in the right plastic taillight moulding showing the car wasn't deep enough into the garage when the overhead door was closed. I washed it and in spite of these details the car looks quite good, and I don't think I'll have much trouble caring for most of them.
    The interior is perfect, needs cleaning and that's it.
    I met with a fellow from Wichita yesterday who is reputed to be perhaps one of the most knowledgeable and competent N* people around (and, small world that this is, the business partner of a long-time good friend). He hasn't seen the car, but we discussed it at length and developed a diagnostic plan. Based on my description, he 1) isn't convinced the head gaskets are bad, 2) detailed a fix if they are, and 3) has a couple of motors on pallets just in case my problem goes beyond anything anticipated, neither of which he would install without re-threading even though they're in fine shape.
    I'm going to dive into this as soon as I clear the desk of a couple of crises.
    A week ago, I considered following the advice of every one I know and running from this thing. I'm now somewhere between cautiously and somewhat confidently optimistic.
    If you end up doing the heads, don't use timeserts.....if he says he uses timeserts...send him to this forum!

  3. #18
    vincentm's Avatar
    vincentm is offline Cadillac Owners Connoisseur
    Automobile(s): 1997 Cadillac Eldorado ETC
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    Aug 2010
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    Kennewick WA
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    Id stud it or nothing but thats just me.

  4. #19
    maeng9981's Avatar
    maeng9981 is offline Cadillac Owners Connoisseur
    Automobile(s): 14 SRX, 12 Sierra, 00 SLS, 99 Deville 50-year Anniversary
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    Re: Northstar Head/Engine removal

    A block test will tell if you do have head gasket/bolt problems or not. Nothing, and I mean nothing should be done before the block tests.

    Is it overheating?

    If you do confirm that those are the suspect ... I personally don't like threaded inserts and I suggest engine studs manufactured for Northstar engines. Though, Norm's inserts is a legitimate repair method too.

    If your block test comes out negative ... then it's time to find external leaks.

  5. #20
    sundog is offline Cadillac Owners Member
    Automobile(s): 1999 DeVille D'elegance
    Join Date
    Aug 2012
    Location
    Newton, Kansas
    Posts
    22

    Re: Northstar Head/Engine removal

    I finally got a look at the videos - that is a neat, simple test. I never would've thought of looking for co2. The mechanic here at the bus barn has one of these tools and offered to let me borrow it. It'll be another week before I can get to it - one last crisis on the desk - but at least I'm close to getting a handle on this thing.

  6. #21
    Submariner409's Avatar
    Submariner409 is offline If it won't run, chrome it
    Automobile(s): 2002.5 F55 STS/65500mi, 2004 Ford F150 SuperCab4x4
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    MD Eastern Shore - Kent Island
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    45,084

    Re: Northstar Head/Engine removal

    www.sjdiscounttools.com/lis75500.html

    "How to be fun and popular with the neighborhood Northstar crowd !!!"

    Don't try to outguess the tester - follow the instructions.

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