pressure testing

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  • tony-t102
    S2Forum Buff
    • Oct 2004
    • 34

    #1

    pressure testing

    When you are pressure testing the system, do you need to block the pipe which comes fom the intercooler into the metal pipe? I've made a tester but I'm guessing that I would loose the pressure straight away through the throtle body if I didn't block the system somewhere like just before it goes into the metal intake pipe.

    Cheers for any help guys.

    Tony.
    1994 S2 Avant Red. Home Fry. 100k.
  • Graham
    S2Forum Extremist
    • Jul 2003
    • 1622
    • Home: United Kingdom Current: Australia

    #2
    Yep the testers i use block that pipe, then also block the breather line from the cam cover to the intake pipe (Before the Turbo or this pressurises the whole engine) and a bung for the pipe just after the MAF with a tyre valve in it. Other bungs which can be made for the return line from the bypass valve so you can see the bypass valve work at its factory setting, and one for the pipe before it goes into the intercooler just to eliminate the immediate system after the turbo and the turbo itself.
    Everything should be made as simple as possible, but not simpler.--:Albert Einstein

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    • tony-t102
      S2Forum Buff
      • Oct 2004
      • 34

      #3
      Cheers Greham. I might have to invest in one of Lee's kits. I've made a really good valve part but I would think Lee's kit will include all the bungs necessary. I'm going to buy a boost gauge tomorrow. Do you know Triple Six in Middlesbro? I've phoned them and they have a couple to choose from. Are they any good?

      Tony.
      1994 S2 Avant Red. Home Fry. 100k.

      Comment

      • Lee
        S2Forum Extremist
        • Jul 2003
        • 1512
        • Country: United Kingdom

        #4
        Hi Tony, please see my recent post in the Group Buy Pressure test kit thread.
        1995 S2 Avant with some upgrades

        Designun Limited....
        Aerospace, Space and Motorsport Design Consultancy and hardware supply.

        Comment

        • tony-t102
          S2Forum Buff
          • Oct 2004
          • 34

          #5
          Yeh cheers Lee.

          I've just sent you an e mail. Have a read and let me know.

          Cheers

          Tony
          1994 S2 Avant Red. Home Fry. 100k.

          Comment

          • porkkis
            S2Forum Extremist
            • Aug 2003
            • 1994
            • Country: Finland

            #6
            Standard engines do not have overlap cams (intake and exhaust valves are not simultaneously open) so the air does not go further than cylinders. It does go past the TB but so what? No blocking required.
            -

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            • Lee
              S2Forum Extremist
              • Jul 2003
              • 1512
              • Country: United Kingdom

              #7
              Blowby past the piston rings on older cars is an issue.
              Some cars have knackered oil stem seals and these have hindered testing too.
              1995 S2 Avant with some upgrades

              Designun Limited....
              Aerospace, Space and Motorsport Design Consultancy and hardware supply.

              Comment

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