Bolts in manifold

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  • Matto
    E30 Modder
    • Jan 2004
    • 800
    #1

    Bolts in manifold

    What are the two bolts in the top of the stock m20 exhaust mafnifold for? they don't hold anything together, just plug the holes.
    Tags: None
    • DaN
      E30 Fanatic
      • Dec 2003
      • 1265
      #2
      Perhaps they are there to take exhaust samples, or install an egt sensor, or backpressure readings, etc..

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        • LowR3V'in
          R3V Elite
          • Feb 2004
          • 4209
          #3
          For ground straps :?:

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            • Matto
              E30 Modder
              • Jan 2004
              • 800
              #4
              Huh. One rattled itself out today and it sounds like I have a lawn mower under the hood.

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                • 808BMW
                  R3VLimited
                  • Oct 2003
                  • 2910
                  #5
                  Originally posted by Matto
                  Huh. One rattled itself out today and it sounds like I have a lawn mower under the hood.
                  Maybe they stop exhaust leaks :P

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