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Sleeper S2 Avant +400HP

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  • In the top photo it also goes through to the valve seat as well? But I guess that can be replaced

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    • To be honest plan was to get a 7A head and start out from that. All spark plug holes have cracks
      Sleeper S2 Avant +450

      A6 Avant 2.7t Stage 3

      Audi S2 Coupe RS2'ed

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      • Better choice that.

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        • Jonas your mailbox is full!
          1990 2.2 20VT Audi Coupe Quattro
          *Hx35/k26, MaxxECU, Wagner EM/IC *RS2 Recaro *4pot-Brembo *3" turboback *Treser *Koni/H&R
          1990 Audi 200 20v Avant 2.2 20VT *7 Seater *Full electric gizmos

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          • All good know.
            Sleeper S2 Avant +450

            A6 Avant 2.7t Stage 3

            Audi S2 Coupe RS2'ed

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            • So block is bored, honed, cleaned and painted.

              Had to bore to 81,5mm pistons, but rebuild is progressing nicely now. Ended up getting Woesnerr pistons from CS-parts.de



              Also had my local hose specialist make a new return hose for the bomb and steering rack. It was leaking multiple placed. Ended in 70 euro compared to 200+ euro at Audi.


              Next step is to machine the 7A head so it can be fitted to the block.

              Does anybody know where the diamond washer is located at the crank pulley?

              Oh yeah will have a Tommis Billet crank pulley for sale.
              Sleeper S2 Avant +450

              A6 Avant 2.7t Stage 3

              Audi S2 Coupe RS2'ed

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              • nice and shiny. what paint did you use on that?

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                • Main bearings and pistons


                  Last edited by Jonas_R; 23rd February 2017, 12:41.
                  Sleeper S2 Avant +450

                  A6 Avant 2.7t Stage 3

                  Audi S2 Coupe RS2'ed

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                  • Originally posted by Jonas_R View Post

                    - moving along nicely.
                    Sure will.





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                    • Why not go for 82.5 or 83 to get more cc?

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                      • You need a custom headgasket and the cilinder walls loose the stability

                        Gesendet von meinem EVA-L09 mit Tapatalk

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                        • But Lots of ppl run 83? And isent it Terryb that Can rebore a hg to fit ?

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                          • Area 0 bore 81mm: 5150,39mm^2
                            Area 1 bore 81,5: 5214,17mm^2
                            Area 2 bore 82,5: 5342,91mm^2

                            Stroke: 86,40mm

                            Volume 0: 2.225cc
                            Volume 1: 2.253cc
                            Volume 2: 2.308cc

                            So that is a gain of 83cc compared to stock or 55cc from 81,5 to 82,5 not worth it in my opinion.
                            When looking at needing new gasket, thinner walls, re boring could be an issue if engine would fail again (not that I think that)
                            Sleeper S2 Avant +450

                            A6 Avant 2.7t Stage 3

                            Audi S2 Coupe RS2'ed

                            Comment


                            • Originally posted by Jonas_R View Post
                              Main bearings and pistons - moving along nicely.
                              Always as nice to see an I5 block in this state.
                              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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                              • Thanks

                                Still a long way to go when the engine is done, but plan is to have it running in may
                                Sleeper S2 Avant +450

                                A6 Avant 2.7t Stage 3

                                Audi S2 Coupe RS2'ed

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