Compressor tip damage

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  • adam g
    S2Forum Addict
    • Feb 2007
    • 445
    • Country: United Kingdom

    #1

    Compressor tip damage

    I started removing my turbo today as I'm planning a new turbine housing and was surprised to see this when I pulled the inlet pipe off. Google suggests it looks like surge damage - but I'm not getting any indications of surge.

    There is no opportunity I can see for particles to get past the air filter.

    The only other thing I can think off is back pressure similar to surge damage when I lift off throttle. I have been running 29psi and kept blowing hose clips off on lift off despite having good ABA spring clips from demon tweeks. Also the end caps on my aluminium intercooler are little rounded so there is a lot of pressure build up in there.

    I fitted an extra dump valve a few weeks ago and it fixed the hoses blowing so hopefully this pressure relief will prevent reoccurrence of the tip damage - if that's the cause.

    Sound plausible?

    uploadfromtaptalk1449694605747.jpg
    My old intercooler had plastic end caps which would blow off on throttle closure on full boost.
    Last edited by adam g; 10 December 2015, 07:03.
  • Error404
    Super Moderator
    • Mar 2007
    • 19789
    • Country: United Kingdom

    #2
    Looks like debris damage being at the inducer
    Panthero Coupé quattro 20vt
    Indigo ABY coupé
    Imola B6 S4 Avant

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    • diesel des
      S2Forum Possessed
      • Feb 2004
      • 3896

      #3
      Yep it's ate something.

      Sent from my LG-H955 using Tapatalk

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      • Thuppu
        S2Forum Freak
        • Sep 2010
        • 4115
        • Country: Finland

        #4
        It happens from time to time.


        Audi UrS4 Avant 2.5 20vt - twincharged - Project
        Audi 80q B4 Sedan 2.2 20vt - Daily user
        BMW 320d Touring e91 M-Sport - Daily user
        BMW 740iA e38 - Project

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        • RichLV
          S2Forum Maniac
          • Mar 2015
          • 872
          • Country: Latvia

          #5
          Originally posted by Thuppu
          It happens from time to time.

          How did THAT end up there?

          Comment

          • Thuppu
            S2Forum Freak
            • Sep 2010
            • 4115
            • Country: Finland

            #6
            Not mine, but everything is possible I assume.

            Audi UrS4 Avant 2.5 20vt - twincharged - Project
            Audi 80q B4 Sedan 2.2 20vt - Daily user
            BMW 320d Touring e91 M-Sport - Daily user
            BMW 740iA e38 - Project

            Comment

            • popdemonic
              S2Forum Extremist
              • Dec 2007
              • 1304
              • Country: Thailand

              #7
              she drooled up something.BTDT on mine too.small rubber pieces from the rubber hose from rocker cover and intake boot fell off and KABOOM.
              one of a few I5 from Asia.

              Comment

              • adam g
                S2Forum Addict
                • Feb 2007
                • 445
                • Country: United Kingdom

                #8
                Originally posted by popdemonic
                she drooled up something.BTDT on mine too.small rubber pieces from the rubber hose from rocker cover and intake boot fell off and KABOOM.
                Do you mean the rubber was blown in through the breather system. My breath er doesn't return to the inlet. I'll look at my inlet pipe closely for signs of deterioration. Other than that there is just a k@n filter on the end.

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