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  1. #1
    Saab Enthusiast photousa's Avatar
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    27 Sep 2010
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    Chicago, Illinois USA
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    220
    Saab(s)
    2003 Saab 9-5 Aero 2.3t Wagon HO Manual
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    Exhaust Manifold / Cylinder Head Question

    Today, I'm putting my cylinder head back together. Just wanted to confirm a question about the exhaust manifold studs. The exhaust manifold studs have a long end of threads and a short end of threads. It's the short end of the threads that go into the cylinder head, correct? I'm guessing you must use vice grips to tighten the studs into the head before installing the exhaust manifold gasket, then the manifold?

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    2003 Saab 9-5 Aero B235R
    Sport Wagon 2.3T HO Manual
    140,627 Miles

  2. #2

    Join Date
    17 Oct 2011
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    1
    Saab(s)
    '98 9-5, '65 96 two-stroke
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    Hi there!

    The end with the short threads go into the head alright. I've been working on a '99 9-5 2.0T last couple of days, and the studs have different length. Did you mark who goes where?
    I wouldn't use vice grip, cause you might mishap and ruin some threads very easily. Instead use two nuts (counter nuts) where they lock eachother up. Thighten the stud in the head, remove the nuts, mount the manifold, and put on the original nuts. I had the turbo mounted while the manifold where out so I had to remove all the studs in the turbo and put them back in after the manifold were fitted.

    This is my 2 cents. Sorry for a little stuttering english.
    File:Counter nut.jpg - Wikipedia, the free encyclopedia <--- this pic shows the counter nut lock.

    --Good Luck.

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  3. #3
    Saab Enthusiast photousa's Avatar
    Join Date
    27 Sep 2010
    Location
    Chicago, Illinois USA
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    Saab(s)
    2003 Saab 9-5 Aero 2.3t Wagon HO Manual
    Thumbs Up:   1
    Thanks for your help Tom. I know the long (4) studs go to the outside and the short ones go to the inside. I just wasn't sure that the short threaded end went into the head,
    thank you for verifying that. I was familiar with the counter nut thing, but I thought that the nuts that came with my Scan Tech exhaust manifold stud / nut kit were the locking
    type that end up cutting threads into the nut, so I was hesitant to use them to do the counter nut thing.
    My original nuts and studs that came off the exhaust manifold are completely trashed, rusted up totally.
    Great advice, thank you, I appreciate it.

    0 Not allowed!
    2003 Saab 9-5 Aero B235R
    Sport Wagon 2.3T HO Manual
    140,627 Miles

 

 

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