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Any suggestions on how to secure heat insulation by exhaust manifold? 850 2016

posted by  someone claiming to be Hugh on  Tue Jul 19 19:41 CST 2022 [RELATED]

Hello All,

I have a 1996 850 GLT wagon (5 speed manual with 433,000 miles). There is an aluminium clad heat shield material that is attached to the firewall that is adjacent or just opposite the exhaust manifold/flex pipe. This heat shield has torn/separated and now rests gently against the exhaust manifold/flex pipe. I have tried taping it back into place and have tired gluing it back into place to no avail. Each time, due to the excessive engine heat I suspect, the heat shield comes loose and falls against the exhaust manifold/flex pipe. It doesn't hurt the engine, cause noise, or affect the driveability of my 850. However, esthetically, it bothers me. I suspect I am not the only person with an old 850 suffering this dilemma, so I would welcome any suggestions of how I could go about securing this heat shield so it stays in place. Thank you to all who respond.

Hugh








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    Any suggestions on how to secure heat insulation by exhaust manifold? 850 2016

    posted by  machine man on  Thu Jul 21 20:02 CST 2022
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    last visit: Wed Oct 22 15:40 CST 2014
    [RELATED]

    Hi,

    I’m not familiar with this car but I think it sounds like you need to use something with a large flat head.

    My thoughts lean towards the possibility of those black plastic plugs you can find in automotive store.
    Volvo puts them all over the 240s and I see them used on todays cars to hold under the fender shields.
    They have a stem of various lengths and have fins sticking out around that compress and engage into a hole of sheet metal.

    Whatever Volvo used as attachment points to hold it should still be in the firewall. The shield should point to them and apparently it might need more attachment points.
    You can add mastic or duct seal compound in addition to the backside of the heat shielding if you are worried about any water or moisture intrusion. Even then, that should be very minimal.

    This is a variation of the pop rivet idea, posted earlier, that if used needs to have a bigger head.
    This is when I look for a fender washer.

    You can eyeball lots of options.

    Phil







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      Any suggestions on how to secure heat insulation by exhaust manifold? 850 2016

      posted by  machine man on  Fri Jul 22 08:39 CST 2022
      Author: [PROFILE] [EVERY POST] [THREADS] [BEST POSTS] RSS Feed     [IGNORE ALL POSTS]
      last visit: Wed Oct 22 15:40 CST 2014
      [RELATED]

      Hi,

      In looking over the threads this morning I have realized hat I forgot to mention my thoughts on that heat shield when I first saw the new front wheel drive car from Volvo.
      I think it may have been one of the first years of the 850.
      This was a car that they said they were not interested in making because they were so into making rear wheel drive cars.
      I surmised that they were lying, as it takes time to draw things up for proposals, let alone into production.

      Yep, I was teasing the Volvo dealerships salesman on a whim of not having anything better to do with some excessive time on my hands.
      I sniffed around until around until he slid out to the car, in really shiny shoes, to the car that had its hood up.
      If You stand around long enough, they just cannot resist getting into your ears.

      I got back at him by repeating what I had read about the stance of Volvo not liking the whole FWD idea.

      I picked on that heat shield that supposedly is to protect the firewall.
      I called that “aluminum pan” something that I would cook a turkey in.
      It just look so cheap to me and so much of an “impromptu fix” against radiated heat absorption.
      He gave up on me rather quickly and left me alone to mumble to myself. (:)

      I mentioned this in case you need a new shield. Buy two, so it will be stronger when stacked with an air gap in between. (:-)

      Phil








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        Any suggestions on how to secure heat insulation by exhaust manifold? 850 2016

        posted by  someone claiming to be Hugh on  Fri Jul 22 12:52 CST 2022 [RELATED]

        Phil,

        Thank you for both responses.

        Hugh








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    Any suggestions on how to secure heat insulation by exhaust manifold? 850 2016

    posted by  stoney on  Wed Jul 20 04:53 CST 2022
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    last visit: Wed Oct 22 17:48 CST 2014
    [RELATED]

    Either use a pop rivet or a flat head sheet metal screw








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      Any suggestions on how to secure heat insulation by exhaust manifold? 850 2016

      posted by  someone claiming to be Hugh on  Fri Jul 22 12:54 CST 2022 [RELATED]

      Stoney,

      I will share both your suggestions with my garage the next time I have the 850 in for service.

      Hugh







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