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Boost question

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  • DelSlowD Offline
    DelSlowD Offline
    DelSlow
    wrote on last edited by
    #4

    Put a manual boost controller on it and turn it all the way up. Tune off sounds.

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    • JN210J Offline
      JN210J Offline
      JN210
      wrote on last edited by
      #5

      Means that a stock Z31 turbo is normally around 8-9psi and is normally what everyone runs, Im only curious as to why mine is at 4. I will probably just end up getting a controller and bringing it up to where I want it. I was just wondering if there was something I hadnt checked yet. No boost solonoid on this car...so perhaps it is in its own way "unhappy" and I am just going to manually bring it up anyway.

      *1989 Nissan 300ZX Z31 *
      legacy image
      > DelSlow;262050 wrote:
      > I like the new JN210

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      • PSiedTSiP Offline
        PSiedTSiP Offline
        PSiedTSi
        wrote on last edited by
        #6

        JN210;324965 wrote:
        Means that a stock Z31 turbo is normally around 8-9psi and is normally what everyone runs, Im only curious as to why mine is at 4. I will probably just end up getting a controller and bringing it up to where I want it. I was just wondering if there was something I hadnt checked yet. No boost solonoid on this car...so perhaps it is in its own way "unhappy" and I am just going to manually bring it up anyway.

        No. Just no. Do the stock Z31's have a boost control solenoid? I'd assume wastegate is 8psi...if it's not building that much, you probably have a massive leak you can't see(pressure test the system, don't just do a visual test!!!!!!!!!!!!!!!!!!!!!!!!!!!), or your turbo is fucked.

        At first I did it for fun, then I realized I made the investment and had to do it!

        92 Talon AWD 6/4bolt [EMAIL="[email protected]"][email protected][/EMAIL]
        95 240SX SE SR20DET [EMAIL="[email protected]"][email protected][/EMAIL]
        1993.5 Supra Hardtop...Sold
        Next project? 6cyl, 6spd?

        > spanish-rice;237125 wrote:
        > at first i thought the title said beer truck drivers needed... In which case i accidently put my two weeks in at work.

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        • JN210J Offline
          JN210J Offline
          JN210
          wrote on last edited by
          #7

          hmm, wouldnt I be able to hear the leak though? I MIGHT know what I have to do, but I just cant see how any air could escape from how tight the coupler is, but I could put a T-bolt clamp over it though and see what happens.

          *1989 Nissan 300ZX Z31 *
          legacy image
          > DelSlow;262050 wrote:
          > I like the new JN210

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          • RexwagonR Offline
            RexwagonR Offline
            Rexwagon
            wrote on last edited by
            #8

            did u hook the wastegate back up?

            u will have to pressure test it for any leaks. u can build a tester out of pvc piping and an air valve. then use a compressor to pump air in.

            legacy image

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            • RexwagonR Offline
              RexwagonR Offline
              Rexwagon
              wrote on last edited by
              #9

              http://z31.com/faq/turbo.faq.shtml

              4psi is stock according to here. sounds like wastegate pressure is up to 5psi

              no offense jeff but 2 mins of google told me that. if it is correct. lol

              legacy image

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              • JN210J Offline
                JN210J Offline
                JN210
                wrote on last edited by
                #10

                lol, hmm...interesting...so I guess everything is in proper operating order then and I have nothing to worry about. thanks derrick.

                *1989 Nissan 300ZX Z31 *
                legacy image
                > DelSlow;262050 wrote:
                > I like the new JN210

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                0
                • RexwagonR Offline
                  RexwagonR Offline
                  Rexwagon
                  wrote on last edited by
                  #11

                  it may be working but 4psi is pretty low. u need more boost, period.

                  legacy image

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                  • JN210J Offline
                    JN210J Offline
                    JN210
                    wrote on last edited by
                    #12

                    Rexwagon;324971 wrote:
                    it may be working but 4psi is pretty low. u need more boost, period.

                    agreed! lol

                    *1989 Nissan 300ZX Z31 *
                    legacy image
                    > DelSlow;262050 wrote:
                    > I like the new JN210

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                    • DaveHD Offline
                      DaveHD Offline
                      DaveH
                      wrote on last edited by
                      #13

                      Pull the hose off of the wastegate and let it eat!

                      😄

                      (j/k btw, don't do that)

                      Rexwagon;324971 wrote:
                      it may be working but 4psi is pretty low. u need more boost, period.

                      DaveH
                      '94 Supra- 7.77 @ 176mph

                      legacy image

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