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Audi Coupe 1990 - 800+HP

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  • #31
    Only asking as it wasn’t listed on your build Maybe tool steel head bolts what head gasket was you using?

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    • #32
      Elring diesel head gasket was currently in use.

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      • #33
        Originally posted by karlz View Post
        Elring diesel head gasket was currently in use.
        Custom elring gasket? try a Athena copper ring gasket and maybe do some deck cooling on the head and the block this is what I’ll be doing.

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        • #34
          Originally posted by mac2226 View Post

          Custom elring gasket? try a Athena copper ring gasket and maybe do some deck cooling on the head and the block this is what I’ll be doing.
          3 pages before this, everything that you asked or sayd is posted in pictures about engine build...
          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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          • #35
            Originally posted by Kiku View Post

            3 pages before this, everything that you asked or sayd is posted in pictures about engine build...
            Sorry I didn’t read from beginning but yes I’ve seen what you have and haven’t done ?

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            • #36
              Right now we have our own reasons why we stay away from the Athena copper gasket. But it may be that we have to use it in the soon coming future...
              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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              • #37
                Awesome project. Love this build. What diesel engine gasket and could you more describe that oil port inside head?on that exaust side
                Last edited by Tom_; 28 December 2021, 17:32.
                Audi Coupe Quattro 2.3 20V

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                • #38
                  Using Elring gasket with code 230.521
                  Regarding the oil port, we have a guy in Estonia who re-does the oiling for entire head to solve the third cylinder oiling problem under high load. Perhaps Kiku can explain further what is done physically to the head.

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                  • #39
                    Any more info regarding third cylinder oiling problem?

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                    • #40
                      Long time no post.

                      Unfortunately the last season ended with a big crack in the cylinder head - as big that it dropped oil pressure to near ~2bar at cold starts.
                      We discovered it when taking apart the engine and this finished the year season for me.



                      Fortunately this was all the damage and when tearing down the bottom end, everything seemed fine and Kiku was able to rebuild the engine with new cylinder head.

                      This year there were no compromises:
                      • ARP headbolts replaced with even stronger ones from BScarperformance;
                      • Athena racing head gasket with metal fire rings;
                      • CatCams "Sport" camshafts
                      • Bosch 74mm e-throttle
                      • King bearing crank and rod bearings
                      • Additional sensors for exhaust back pressure monitoring
                      • Additional sensor for coolant pressure monitoring

                      Over the winter big Porsche brakes were fitted in the front + small paint corrections and ceramic coating to protect the paint.












                      Job well done and it was time for dyno again.
                      All upgrades proved to be successful and results were what we expected: 530kw / 905nm at the wheels

                      Dyno run video:


                      Backpressure sensors proved to be extra useful as it turned out we were way above the PT6062 turbo rating and it clearly showed very high backpressure in the manifold. Boost pressure was adjusted for it to be in the safe limits.




                      First competition of the year was a huge success! Managed to take home victory at the 1/8mile drag racing event.
                      Few videos from the event:



                      Car survived the event and waiting for next one in a few weeks.
                      Last edited by karlz; 29 June 2022, 09:59.

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                      • #41
                        Are those cracks on new head on cyl no.4? Did you leave them like that?

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                        • #42
                          Originally posted by tonci View Post
                          Are those cracks on new head on cyl no.4? Did you leave them like that?
                          Oh no these cracks were on the old head - engine lost oil pressure due to these and the head was scrapped.
                          New head is crack free.

                          They were between cyl 2 and 3.

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                          • #43
                            Great work!!!

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                            • #44
                              905NM! That's some serious torque, must be absolutely wild!

                              Haven't read the whole thread yet, be curious to know what gearbox your using?
                              1989 B3 2.0 3A 80 quattro... Budget 1.8T Project.
                              1992 C4 100 2.8 Avant quattro... Mobile Sitting Room.
                              1995 RS2... MTM K26/7 380 BHP Conversion.
                              1990 Corrado G60... Breaking For Parts.

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                              • #45
                                Gearbox is 01E with JHM syncro kit and Gripper LSD differential.

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