catch tank solution???

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

    #31
    I would plug the rear outlet with a modded stock breather system. But I have dual 12AN breathers from the head and 30mm breather from the block directly connected to a swirl pot with feedback back to sump. I did leave the rear outlet open and plugged it also to the swirl pot. The idea was that on high rpm's the head can owerflow with oil, so there is a extra route back to sump for the oil, and it also flushes the hoses and pot with fresh oil every here and then. I havn't a clue if this is a good idea.

    Audi UrS4 Avant 2.5 20vt - twincharged - Project
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    • Billman
      S2Forum Freak
      • Nov 2004
      • 4129

      #32
      Originally posted by Nik0las
      I thought that it will be something like this but I wasn't sure.

      The picture above is from VW 2.0i engine. How this breather feets on 2.2t is it bolt on?

      And sorry for the stupped question but that way is it going to be bad for the engine after all thses vipors are meant to go out of the head not to lopping them back or?
      see this
      Attached Files
      Go Holset or Go RS4

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

        #33
        Wow, thats a nice drawing.

        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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        • Billman
          S2Forum Freak
          • Nov 2004
          • 4129

          #34
          Originally posted by Thuppu
          Wow, thats a nice drawing.
          Go Holset or Go RS4

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          • Nik0las
            S2Forum Extremist
            • Mar 2009
            • 1345
            • Country: Bulgaria

            #35
            Originally posted by Billman
            see this
            well from the nice drawing i presume you are venting the head from the CAP (it is not connected to anything) this prevents back breather to be overflow with oil but still it should be connected to catch tank at least I think! I'm mistaking somethin or not?

            However if this is the case I saw somewhere on the web ESC tuning breather CAP/CAP with 2 one way valves much more compact solution.

            However this VW breather is it bolt on on our cars or you need to mode something to use it? Do you need to take off the cam cover to install it?

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            • Billman
              S2Forum Freak
              • Nov 2004
              • 4129

              #36
              Originally posted by Nik0las
              well from the nice drawing i presume you are venting the head from the CAP (it is not connected to anything) this prevents back breather to be overflow with oil but still it should be connected to catch tank at least I think! I'm mistaking somethin or not?

              However if this is the case I saw somewhere on the web ESC tuning breather CAP/CAP with 2 one way valves much more compact solution.

              However this VW breather is it bolt on on our cars or you need to mode something to use it? Do you need to take off the cam cover to install it?
              Don't know the details...just found it on the net. I use the back plug right now but the catch can collects oil.
              Last edited by Billman; 17 May 2012, 16:19.
              Go Holset or Go RS4

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              • JP
                S2Forum Extremist
                • Mar 2007
                • 1858
                • Country: United Kingdom

                #37
                The breather comes on the 2ltr beetles amongst others. Screws straight on in place of the filler cap then filler cap screws into the top of it.

                Straight fit only issue might be bonnet clearance.
                UrS6 Stroker + HTA3586 =

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                • europeanme
                  S2Forum Possessed
                  • Oct 2005
                  • 3817
                  • Country: United Kingdom

                  #38
                  Originally posted by Thuppu
                  Wow, thats a nice drawing.
                  its clear enough for even me to understand...why compicate things I say...keep it simple.....

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                  • newsh
                    S2Forum Obsessed
                    • Aug 2003
                    • 16226
                    • Country: United Kingdom

                    #39
                    I love a dodgy sketch, well done Billman!

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                    • Mcstiff
                      S2Forum Maniac
                      • Oct 2004
                      • 504
                      • Country: United States

                      #40
                      I think it would fit, may require modifying the cap to be flat (cut the handle off an old style cap.
                      1995 1PissedOff90sigpic1991 USDM CQ 7aT

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                      • Error404
                        Super Moderator
                        • Mar 2007
                        • 19789
                        • Country: United Kingdom

                        #41
                        Originally posted by Billman
                        see this
                        Panthero Coupé quattro 20vt
                        Indigo ABY coupé
                        Imola B6 S4 Avant

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                        • Rusty
                          Super Moderator
                          • Jun 2004
                          • 18953
                          • Country: United Kingdom

                          #42
                          Or just accept it does that and fit a suitable swirl pot

                          I measured 50ml of oil after 10 2nd gear runs in a chipped ABY pulling around 0.5g max. On a proper power car, I can imagine a lot more oil going down the drain... So to speak.
                          Cheers'en, AndyC
                          1994 ABY Coupe - Projekt Alpinweiss

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