NM cams

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  • [RPM]
    S2Forum Addict
    • Dec 2009
    • 229
    • Home: Portugal Current: Ireland

    #1

    NM cams

    Are they worth it in a mild turned engine?
  • Audi_CQ
    S2Forum Maniac
    • Mar 2004
    • 940
    • Country: Norway

    #2
    No. Waste of money

    Comment

    • UrS4boy
      S2Forum Obsessed
      • Feb 2006
      • 11859
      • Country: Canada

      #3
      Originally posted by Audi_CQ
      No. Waste of money
      Comparison specifications previously posted here:

      Last edited by UrS4boy; 23 July 2011, 19:30.
      RS2'd 93 UrS4 5 spd sedan
      94 UrS4 V8 6 spd manual avant

      Comment

      • [RPM]
        S2Forum Addict
        • Dec 2009
        • 229
        • Home: Portugal Current: Ireland

        #4
        So for up to 400 bhp stick to aby cams?

        Comment

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

          #5
          Audi_CQ comment was tongue in cheek

          They are excellent cams and the old audi yahoo group had brilliant results with them so did Krist, I have them in my car when it's ready for the dyno results will be quantative

          Comment

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

            #6
            See Krists comments here http://www.s2forum.com/forum/showthread.php?t=18411

            Comment

            • Audi_CQ
              S2Forum Maniac
              • Mar 2004
              • 940
              • Country: Norway

              #7
              Originally posted by [RPM]
              So for up to 400 bhp stick to aby cams?
              Yes. NM cams may help a bit, but are not the weakest link so there are other places to use money on before cams. Would port the head before changing cams, but of course more costly. If you already have the NM cams you could test with and without. The only way to be sure if it's working

              Comment

              • [RPM]
                S2Forum Addict
                • Dec 2009
                • 229
                • Home: Portugal Current: Ireland

                #8
                thank you

                I have h rods arp main and head studs and mn cams to go in
                shopping for a newer tech decent turbo and ex manifold.
                and hopefully a ported head.

                Comment

                • prj
                  S2Forum Zealot
                  • Mar 2010
                  • 6308
                  • Country: Estonia

                  #9
                  I mapped a car with them a week ago on RS2 turbo.
                  They are very nice cams - the lift and duration is similar to the stock ones, but just a little more.
                  You lose a tiny little bit down low (not really noticeable, especially on a custom mapped car), but get a nice gain up top, especially past 5000 rpm compared to stock cams.

                  I'd go for it.
                  http://tuner.ee - http://www.facebook.com/tuner.ee

                  Comment

                  • A80Avant
                    S2Forum Obsessed
                    • Sep 2005
                    • 10873
                    • Country: Greece

                    #10
                    when you say stock? you mean ADU or ABY cams?

                    when compared to the ADU cams, what are the differences?

                    From the links, it almost looks like the NMs are having slighlty higher lift on IN/EX and there is a difference in duration on the IN when compared to the ADU..

                    what does the duration difference means in practice?

                    Comment

                    • ACQ
                      S2Forum Enthusiast
                      • Jun 2008
                      • 141
                      • Country: Lithuania

                      #11
                      Is it good setup to use 7a exhaust cam and NM inlet cam? Because I found them in 7a engine which goes clearly with much torque. lifts are the same, but tim different:
                      NM __________Opens 0° ATDC, closes 32° ABDC, duration 212°, lift 9,6mm?
                      7A___________Opens 6° ATDC, closes 38° ABDC, duration 212°, lift 9,6mm

                      would be better to use 7a inlet cam or leave NM?

                      Comment

                      • ACQ
                        S2Forum Enthusiast
                        • Jun 2008
                        • 141
                        • Country: Lithuania

                        #12
                        the same effects with 7a and nm intake cams?

                        Comment

                        • larsaskogstad
                          S2Forum Maniac
                          • May 2020
                          • 674
                          • Country: Norway

                          #13
                          Originally posted by prj
                          I mapped a car with them a week ago on RS2 turbo.
                          They are very nice cams - the lift and duration is similar to the stock ones, but just a little more.
                          You lose a tiny little bit down low (not really noticeable, especially on a custom mapped car), but get a nice gain up top, especially past 5000 rpm compared to stock cams.

                          I'd go for it.
                          bumping this old thread , would both cams be used or only one for this?
                          https://www.s2forum.com/forum/member...-3b-1991-coupe

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