Is this normal?!? Ring leaking air...

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  • MatRacer
    E30 Addict
    • Oct 2008
    • 562

    #1

    Is this normal?!? Ring leaking air...

    Doing my s52 swap. Just dropped the pan to replace the oil pump, secure the nut, pan...etc. while there I removed the baffle and look into the cylinder from the bottom end and rotated the engine. I definitely hear air coming out of the cylinder between piston and cylinder. It's leaking by the rings... the engine has been sitting for 2 years... hard to do a compression test with engine out... video will come tomorrow.

    Is it normal?
    E30 now S52
    2008 Suburban LTZ (Family and TT hauler)
    325xiT (Sold)

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  • MatRacer
    E30 Addict
    • Oct 2008
    • 562

    #2
    E30 now S52
    2008 Suburban LTZ (Family and TT hauler)
    325xiT (Sold)

    sigpic

    Comment

    • dude8383
      Forum Sponsor
      • Jan 2005
      • 10387

      #3
      That might be just compression building. I would say do a leak down but the tolerances are not the same on a cold motor.
      IG: deniso_nsi Leave me feedback here

      Comment

      • MatRacer
        E30 Addict
        • Oct 2008
        • 562

        #4
        Yeah its for sure compression that is building up pressure, but it's leaking thru the rings
        E30 now S52
        2008 Suburban LTZ (Family and TT hauler)
        325xiT (Sold)

        sigpic

        Comment

        • MatRacer
          E30 Addict
          • Oct 2008
          • 562

          #5
          The problem is that I can't really do a leak down test with a cold engine that hasn't been running for two years. Results would not be valuable... correct me me if i'm wrong
          E30 now S52
          2008 Suburban LTZ (Family and TT hauler)
          325xiT (Sold)

          sigpic

          Comment

          • dude8383
            Forum Sponsor
            • Jan 2005
            • 10387

            #6
            Thats exactly what I'm saying... doing a leak down on a cold motor is going to produce inconsistent results.
            IG: deniso_nsi Leave me feedback here

            Comment

            • MatRacer
              E30 Addict
              • Oct 2008
              • 562

              #7
              do you think it would produce at least a hint?
              Last edited by MatRacer; 04-04-2016, 11:14 AM.
              E30 now S52
              2008 Suburban LTZ (Family and TT hauler)
              325xiT (Sold)

              sigpic

              Comment

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