NorthStar Head Bolts
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Northstar Engines and System Technical Discussion Discussion, NorthStar Head Bolts in Cadillac Engine Technical Discussion; NorthStar head bolt questions Do the head bolts need to be torqued down again after they have been installed and ...
  1. #1
    Lonezuk is offline Cadillac Owners Member
    Join Date
    Apr 2006
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    USA
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    NorthStar Head Bolts

    NorthStar head bolt questions

    Do the head bolts need to be torqued down again after they have been installed and the engine used ?

    How about if time-serts were used ?

    Looking down into the bolt holes, how can one tell if an engine has time-serts ?

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  3. #2
    zonie77 is offline Cadillac Owners Connoisseur
    Automobile(s): 94 ETC,97 STS
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    Sep 2003
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    Arizona
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    Re: NorthStar Head Bolts

    The head bolts don't need to be retorqued after running. There is a sealant on them and there is no easy way to retorque them. I think the retorqueing has been eliminated with newer head gaskets.

    If you look at the thread holes you will see a different colored (steel) ring in the aluminum. That would be the timesert.

  4. #3
    N-star is offline BAD EMAIL ADDRESS
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    Jul 2005
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    Re: NorthStar Head Bolts

    Bump

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