Cylinder head coolant ring

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  • SteveH
    Super Moderator
    • Jul 2003
    • 4460
    • Country: United Kingdom

    #16
    The Audi works cars ran this mod. The gains in cooling allow you to be more aggressive with timing as Jamo mentions. You can get the machining done for £150 if you look around. Doing the head and block would be a good idea, but it does mean ripping the engine out and dismantling to achieve this.
    I have an unused 3B block that is screaming to have this done.
    91 Modded 3B
    14 A6 Avant Black Edition

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    • Jamo
      Retired OG Mod
      • Mar 2004
      • 21750
      • Country: United Kingdom

      #17
      Yeah I first heard of this AFTER I finished building my car 6 months later

      I suppose it all depends how you want to go and if I'm prepared to take it all apart again, undecided

      Comment

      • Billman
        S2Forum Freak
        • Nov 2004
        • 4129

        #18
        I think it a nice feature if you are going to remove the head and wanna run things to the limit. Personally would not remove the head but I would make it to the spare one.

        It a nice add on and one can use this without any disadvantages.
        Go Holset or Go RS4

        Comment

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

          #19
          Originally posted by terrybullwon
          And it's a water jacket
          How deep and wide should the groove be? Is 5x5mm enough? Does it work good enough on the head only, or should it be on the block also?

          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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          • Jamo
            Retired OG Mod
            • Mar 2004
            • 21750
            • Country: United Kingdom

            #20

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