What Causes Heagaskets To Blow?
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Northstar Engines and System Technical Discussion Discussion, What Causes Heagaskets To Blow? in Cadillac Engine Technical Discussion; Hi, I was wondering what causes the headgaskets to blow and at what miles does it usually happen? Thanks....
  1. #1
    VIPERRACING is offline Cadillac Owners Member
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    What Causes Heagaskets To Blow?

    Hi, I was wondering what causes the headgaskets to blow and at what miles does it usually happen? Thanks.

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    Ranger's Avatar
    Ranger is offline Cadillac Owners Member
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    Re: What Causes Heagaskets To Blow?

    Usually the head bolt threads pull. There is no "usual" mileage. Some go at 75K or so. Others are still good at 250K. Pre 2000's are more prone to failure though. Keeping up with the cooling system maintenance may help.

  4. #3
    AJxtcman's Avatar
    AJxtcman is offline Cadillac Owners Connoisseur
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    Re: What Causes Heagaskets To Blow?

    This is my theory. I have more to add.

    http://www.cadillacforums.com/forums...ilure-fix.html

  5. #4
    JC316 is offline Cadillac Owners Connoisseur
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    Re: What Causes Heagaskets To Blow?

    I am pretty sure that AJ is spot on in his theory. I have a bit of one myself, I have rarely seen them blow in the south where it's warmer, mostly in the northern, colder states. I am thinking that quick cool downs from being hot might have some effect on it, but I have no proof.

  6. #5
    CadillacSTS42005's Avatar
    CadillacSTS42005 is offline Banned
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    Re: What Causes Heagaskets To Blow?

    the starving children of Nigeria cause it...

    in all seriousness many things:
    lack of coolant care
    pulled head bolts
    weak shotty aluminum casting

  7. #6
    zonie77 is offline Cadillac Owners Connoisseur
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    Re: What Causes Heagaskets To Blow?

    Quote Originally Posted by CadillacSTS2003 View Post
    the starving children of Nigeria cause it...

    That's a cop out...we all know it's a combination of global warming on a global scale and George Bush's fault!

  8. #7
    tateos's Avatar
    tateos is offline Cadillac Owners Connoisseur
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    Re: What Causes Heagaskets To Blow?

    I have blown head gaskets in two separate '97 engines in AZ, and that is about as far South and hot as it gets

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