Did a compression test on my motor

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  • EtaSport
    R3VLimited
    • Oct 2003
    • 2853

    #1

    Did a compression test on my motor

    So, we picked up a compression tester to check my sisters 318 (which by the way has 250,000 miles and 210 psi on all 4), and I did my car today.

    1-5 have 160 psi, 6 has 180. I was pretty sure most m20s were around 160-175 range. The haynes manual says 142-156 for all m20 motors. I'm pretty happy considering the bottom end is all stock with 400,000 miles.

    What numbers have others been seeing?
    Last edited by EtaSport; 11-25-2005, 04:24 PM.
    Old and improved:
  • Jordan
    R3V OG
    • Oct 2003
    • 12907

    #2
    Your numbers look good and healthy.

    My m20 last tested 210+-5PSI across the board.
    Tenured Automotive Service Professional - Avid BMW Enthusiast

    Vapor Honing & E30 ABS Pump Refurbishment Service
    https://mtechniqueabs.com/

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    • nando
      Moderator
      • Nov 2003
      • 34827

      #3
      mine were 160-165. not bad for 175k on the bottom end. :)
      Build thread

      Bimmerlabs

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      • TwoJ's
        R3V Elite
        • Oct 2005
        • 4908

        #4
        Originally posted by EtaSport
        I'm pretty happy considering the bottom end is all stock with 400,000 miles.
        wow...400k huh? that's impressive.
        ________
        juggalo
        Last edited by TwoJ's; 01-23-2011, 02:47 PM.

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