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  • #46
    Shame your having to pull the engine out but think it the right decision. Bet it's been on minimal oil pressure for some time and don't think the engine bearings and the rest of the internals would like that. There is one AEB engine on ebay at the moment for best offer. There are also a couple of TQS's being broken at the moment.

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    • #47
      Originally posted by Tractor Dave View Post
      So the engine was the wrong code.
      The one in the car or the one being offered?

      :thinking:

      S2 Coupe 3B Project


      Ur quattro restoration

      S2 Avant

      Boost is the new rock and roll!
      sigpic

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      • #48
        Originally posted by newsh View Post

        The one in the car or the one being offered?

        :thinking:
        The one being offered.
        Nothelle S2 Avant
        Wr Ur Quattro in restoration

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        • #49
          This forum is brilliant. Looks like we have found one
          Nothelle S2 Avant
          Wr Ur Quattro in restoration

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          • #50
            I think this turbo is dead!


            Naughty engine going,


            Going


            Gone


            And sitting on the naughty step for a while.



            Sent from my iPhone using Tapatalk
            Nothelle S2 Avant
            Wr Ur Quattro in restoration

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            • #51
              Good god. Were they running without an air filter?

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              • #52
                Originally posted by B5NUT View Post
                Good god. Were they running without an air filter?
                Looks like the shaft has snapped as the wheel is free to wobble around
                Nothelle S2 Avant
                Wr Ur Quattro in restoration

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                • #53
                  That's the same as I encountered with the one I was driving, I would imagine the head is also totaled from oil starvation, hence the paste in the sump.
                  1989 B3 2.0 3A 80 quattro. Long term project.
                  1992 C4 100 2.8 Avant quattro, daily driver.
                  1995 RS2, MTM K26/7, 380 BHP conversion.
                  1997 C4 2.8 30V quattro, currently breaking for spares.
                  1991 MK2 Golf G60. For sale.
                  1990 Corrado G60. Looking sad.

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                  • #54
                    I can only see black plastic particles in the filter.



                    Sent from my iPhone using Tapatalk
                    Nothelle S2 Avant
                    Wr Ur Quattro in restoration

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                    • #55
                      That pick up had so much crap in it I'm surprised anything made to the filter.

                      In seriousness you really need to find the source of that alloy paste, cam's and lifters out next see how they look, it maybe the oil way to one journal got blocked, until it's apart you won't know. As I said in my text it could also be white metal from the main bearing shells but if I had to guess I'd say it's from the head. Good luck, you never know it might be saveable.
                      1989 B3 2.0 3A 80 quattro. Long term project.
                      1992 C4 100 2.8 Avant quattro, daily driver.
                      1995 RS2, MTM K26/7, 380 BHP conversion.
                      1997 C4 2.8 30V quattro, currently breaking for spares.
                      1991 MK2 Golf G60. For sale.
                      1990 Corrado G60. Looking sad.

                      Comment


                      • #56
                        I've had a thought this morning regarding the source of the alloy paste in your sump... If the cam chain tensioner was do nothing, then the chain may have been slack enough to flap about and contact the head producing the debris. Meaning the engine could well be worth rebuilding, I'd have a really good look in that area as soon as the cams are out of the way.
                        1989 B3 2.0 3A 80 quattro. Long term project.
                        1992 C4 100 2.8 Avant quattro, daily driver.
                        1995 RS2, MTM K26/7, 380 BHP conversion.
                        1997 C4 2.8 30V quattro, currently breaking for spares.
                        1991 MK2 Golf G60. For sale.
                        1990 Corrado G60. Looking sad.

                        Comment


                        • #57
                          That's a very good point Kit. The housing around the chain displays signs of exactly this. Did some reading up last night and now have a p!an. Last exhaust camshaft cap at front of engine is the last point oil reaches and the one to check first.
                          Nothelle S2 Avant
                          Wr Ur Quattro in restoration

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                          • #58
                            Yep, that's right regarding the cam caps, the exhaust one's are also subject to more heat so it's always that shaft that makes contact first, any damage will be fairly obvious under decent light. Take a couple of photo's so you can be sure of their locations and lay them and all the lifters out systematically on a clean work surface.

                            I'd be inclined to fit new lifters as their not that expensive but if their not damaged then there's no real need to, they must however go back where they came from.

                            Hopefully the cam chain making contact is the only source of metal debris.
                            1989 B3 2.0 3A 80 quattro. Long term project.
                            1992 C4 100 2.8 Avant quattro, daily driver.
                            1995 RS2, MTM K26/7, 380 BHP conversion.
                            1997 C4 2.8 30V quattro, currently breaking for spares.
                            1991 MK2 Golf G60. For sale.
                            1990 Corrado G60. Looking sad.

                            Comment


                            • #59
                              There is some fine scoring but it's not excessive. My fingernail isn't catching in the scoring and apparently that's the quick test. Still feels fairly smooth.


                              And you can see where the chain has worn this away somewhat.



                              Sent from my iPhone using Tapatalk
                              Nothelle S2 Avant
                              Wr Ur Quattro in restoration

                              Comment


                              • #60
                                It's very hard to tell from a photo but that looks okay, not perfect but not trashed either, the cam journal doesn't appear to have gotten to hot, they were blue on the one that failed on me and the caps were absolutely destroyed.

                                The finger nail test is indeed the way to do a quick check, or you can try very lightly pulling the nose of a 0.25mm feeler gauge over the surface and see if it seems to be picking up.

                                Well that cam chain contact would explain the alloy paste, it's amazing how resilient engines are.

                                I've rebuilt so many PD engines I've lost count and some of the damage I've seen with them is way worse than a bit of alloy paste and some very light scoring. I don't know if your aware but the 150BHP models in-particular suffer from the cam lobes making contact with the lifters, normally on cylinder four. The worst ones I've repaired have worn completely through the tops of a couple of the lifters and the cam lobes are gone which obviously means the head is full of steel particles which I've fished out with a magnet. Their a slightly different kettle of fish as the cams run in shells in the head and to repair one you replace all the moving parts but the bottom ends and head castings have always survived, I do take the sumps off to clean them out and check.
                                1989 B3 2.0 3A 80 quattro. Long term project.
                                1992 C4 100 2.8 Avant quattro, daily driver.
                                1995 RS2, MTM K26/7, 380 BHP conversion.
                                1997 C4 2.8 30V quattro, currently breaking for spares.
                                1991 MK2 Golf G60. For sale.
                                1990 Corrado G60. Looking sad.

                                Comment

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