NorthStar Head Bolts

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Northstar Engines and System Technical Discussion Discussion, NorthStar Head Bolts in Cadillac Engine 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

    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
    Join Date
    Sep 2003

    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
    Join Date
    Jul 2005

    Re: NorthStar Head Bolts


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