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Audi turbo m20?

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    Audi turbo m20?

    I searched and found this thread: http://www.r3vlimited.com/board/show...ht=audi+turbos and I started to wonder how easy this is. I saw a wrecked s4 at a local junk yard and I was thinking about pulling the turbo and some more stuff off of it. I was wondering if anyone has more info on how to do this turbo set up. It seems to be fairly reasonably priced and sounds no too hardcore of a set up.

    #2
    just as a general rule, making something more complicated usually doesn't make it cheaper, and it sounds like that's a priority.

    if you want "reasonably priced" and "not too hardcore", go with a junkyard T3 with a .62 AR, assuming we're still talking about an m20b25. one of those will be cheaper than 2 audi turbos, and there are well-known solutions for the hot-side plumbing.
    past:
    1989 325is (learner shitbox)
    1986 325e (turbo dorito)
    1991 318ic (5-lug ITB)
    1985 323i baur
    current:
    1995 M3 (suspension, 17x9/255-40, borla)

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      #3
      The t3 with a .62 AR is from what car?

      Comment


        #4
        For all those people who find it more convenient to bother you with their question rather than to Google it for themselves.


        not trying to be a dick, just wanna teach a man to fish...

        i was looking for something slightly smaller (.48ar) for my M42, but the first one that comes to mind is the ford mustang SVO / t-bird turbo 5spd / merkur xr4ti 5spd.
        past:
        1989 325is (learner shitbox)
        1986 325e (turbo dorito)
        1991 318ic (5-lug ITB)
        1985 323i baur
        current:
        1995 M3 (suspension, 17x9/255-40, borla)

        Comment


          #5
          How many litres/minute is that turbo charger making?
          Should i google the various applications for you? Then do the math?
          What the phuck is <.> ar?
          You are a dick

          Comment


            #6


            If you take for example, the area in A1 and divide it by R1, you will have found the A/R for this turbine housing. Each cross section and radius have the same proportions so the A/R will be found by using any cross section/radius.

            Common turbine housing A/R's are .58, .69, .81, .84, .96 and 1.00. The turbine will start to spool sooner with a .58 A/R, and later with a 1.00 A/R. Lag will be a problem if the A/R is too large, but if it's too small, the turbo will run out of steam and be nothing more than a restriction.
            that's the last shit i'm gonna look up for you, considering i answered your fucking question to get that response.

            grow some thicker skin, son, because i'm not the most abrasive person around here by a longshot.
            past:
            1989 325is (learner shitbox)
            1986 325e (turbo dorito)
            1991 318ic (5-lug ITB)
            1985 323i baur
            current:
            1995 M3 (suspension, 17x9/255-40, borla)

            Comment


              #7
              Very informative, better then the I'll google that for you./....
              you think the size of the compressor could be nominal compared to the impeller, therefor raising the boost more rapidly?
              I mean, these things are all good, but it doesn't help selecting a turbo that is good between 1700rpm and 5thou on a 2.7.. Which would be the litre minute calculation basis.. not your fault mind you..

              Comment


                #8
                I didn't mean to start a feud, I just wanted to know what was involved in making this seemingly cheap turbo kit. If no one has any information on this kit can someone point me in the direction of someone who does?

                Comment


                  #9
                  take your displacement times your power band(bottom and top)
                  mutiply them, then you have a reasonably low boost level, multiply that to find your ideal boost target, then you just have to find a turbo that provides those figures..

                  Comment


                    #10
                    I see thanks for the help.

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