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Massive Boost Leak

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    Massive Boost Leak

    i finally got my rad in and finished up my motor heat and all that work great no overheating , now i noticed my blow off valve wouldn't go off at all no matter what , so i thought u know what probably my waste-gate took it apart put a 12psi spring its a 38mm waste-gate dont know the brand but its brand new im gonna test it tom with my air compressor , now what im thinking is it might be my inter-cooler it has a small dent on one of the sides which isnt to bad how would i test it , and if not the other thing iv noticed i did wrong was i have about 5 vaccum lines running to those 2 small holes on the intake could the one for the waste-gate be to small and not giving it the right pressure , im basically not boosting and the gauge shows no boost instead sits at the 0 i hit the gas hit 5000 rpm it goes down to 25 psi instead of up telling me im hitting boost , other problem is the intercooler has reducers for the pipe i might have the pipe to far in could that cause anything or thanks
    Sold Black BMW E30 325IS
    1987 bmw e30 euro part out
    1990 Bmw 325i Cabrio 2.9
    Metric Mechanic 2.9 stroker
    Holset Hx35w CXRacing Manifold
    MegaSquirt ARP HeadStuds
    OEM HG AEM Methanol injection
    20psi

    #2
    did you pop intercooler piping while doing a pull or something?

    We want to help you but you need to speak in clear sentences. its very hard to understand whats going on here...

    Turbo M42 Build Thread :Here
    Ig:ryno_pzk
    I like the tuna here.
    Originally posted by lambo
    Buttchug. The official poster child of r3v.

    Comment


      #3
      fresh rebuild , 2.9 stroker just a downpipe on ATM no screamer pipe on yet

      just finished installing the turbo kit

      intercooler was bought banged up a bit off some guys s13

      i just remembered i also had the 1 brake booster vaccum line hole unplugged but i plugged the rest could that be my issue the hole is letting most of the air escape before it hits the manifold

      also i have about 5 vacuum lines running to the 2 vacuum lines on the intake manifold which im thinking is way to small

      haha sorry im confusing the shit out of my self trying to figure out what i forgot so im rushing my words
      Sold Black BMW E30 325IS
      1987 bmw e30 euro part out
      1990 Bmw 325i Cabrio 2.9
      Metric Mechanic 2.9 stroker
      Holset Hx35w CXRacing Manifold
      MegaSquirt ARP HeadStuds
      OEM HG AEM Methanol injection
      20psi

      Comment


        #4
        Pictures might help, what brand wastegate are you running?
        Specs on parts?

        Comment


          #5
          I had this same problem on my setup.

          Pull the pipe off your throttle body and duct-tape a can lid or something over the hole so it is air tight and closed. Now pull the pipe off your turbo and do the same thing.

          Using an air compressor blow into one of the holes slowly~ your bov should open when your charge pipes are pressurized to 20 or so psi or whatever it is set at. You can hear all the leaks under that when it is closed and fix them.

          If they leak down really slowly it is fine, but if there is a giant woosh coming out of a hole in your intercooler you might want to fix that.

          If you want to get fancy you can use a pvc pipe end cap to make a pressure fitting~ watch this vid of aussie bros doing what you need to do: http://www.youtube.com/watch?v=atretf9u-Mc

          Comment


            #6
            here is a video of it running runs smooth and strong just wont hit boost at all , honestly no clue what waste-gate im looking for a named brand one atm to go buy all i know is it has a 12psi spring and it was brand new 38mm , but the only hole i see is the second brake booster hole ill patch and see if that can cause that bad of a leak im getting no boost at all,

            cars all warmed up and here it is revving

            Sold Black BMW E30 325IS
            1987 bmw e30 euro part out
            1990 Bmw 325i Cabrio 2.9
            Metric Mechanic 2.9 stroker
            Holset Hx35w CXRacing Manifold
            MegaSquirt ARP HeadStuds
            OEM HG AEM Methanol injection
            20psi

            Comment


              #7
              im so lost and was rushing things my fault the car in neutral doesn't hit boost cuz the turbo needs more load to produce boost
              Last edited by Bmwb; 02-13-2014, 06:46 PM.
              Sold Black BMW E30 325IS
              1987 bmw e30 euro part out
              1990 Bmw 325i Cabrio 2.9
              Metric Mechanic 2.9 stroker
              Holset Hx35w CXRacing Manifold
              MegaSquirt ARP HeadStuds
              OEM HG AEM Methanol injection
              20psi

              Comment

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