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Thread: Why is there a hole in my exhaust?

  1. #1
    Join Date
    Dec 2007
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    Question Why is there a hole in my exhaust?

    Under the thin skin which has rusted away, there is a plate with a hole that was obviously part of the manufacturing process

    Why is it there?

    What should I do about it?

    Paul
    Pure 2000 W, LHD 599cc - Engine Rebuilt Feb 08 - sold
    Passion 2000 W, LHD 599cc - Engine Rebuilt Mar 09 - sold
    Passion 1998 T, LHD 599cc - Engine Rebuilt Apr 10 - sold
    Cabrio 2001 Y, LHD 599cc - Engine Rebuilt Jul 10 Replaced Oct 16

  2. #2
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    Quote Originally Posted by UKKid35 View Post

    What should I do about it?
    Stick a self tapper or pop rivet in it. (That's what I did with mine).

  3. #3
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    Thanks - does beg the question - why it is there in the first place?
    Paul
    Pure 2000 W, LHD 599cc - Engine Rebuilt Feb 08 - sold
    Passion 2000 W, LHD 599cc - Engine Rebuilt Mar 09 - sold
    Passion 1998 T, LHD 599cc - Engine Rebuilt Apr 10 - sold
    Cabrio 2001 Y, LHD 599cc - Engine Rebuilt Jul 10 Replaced Oct 16

  4. #4
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    Quote Originally Posted by UKKid35 View Post
    Thanks - does beg the question - why it is there in the first place?
    They had a bunch of them and no bucket.

  5. #5
    Join Date
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    What should I do about it?
    Take photos of it
    You're so money supermarket and you don't even know it!

  6. #6
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    Quote Originally Posted by reinaldo_is_spam View Post
    Take photos of it
    and discuss it on an Internet forum or two.

  7. #7
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    The hole is probably where a spot weld has rusted away.
    The position relates to an internal baffle, of which there are two, and this was probably held in position by several spot welds.
    Strangely enough I cut an exhaust open earlier this week - just out of curiosity - to see what was inside!

  8. #8
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    Quote Originally Posted by bob-in-dav View Post
    Strangely enough I cut an exhaust open earlier this week - just out of curiosity - to see what was inside!
    Donít keep us hanging !!!
    You're so money supermarket and you don't even know it!

  9. #9
    Join Date
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    20180212_171924-1.jpg

    Looking at it again, I think what I said before is wrong.
    The hole in the picture is directly below the lambda sensor which is slightly to the right of the baffle I spoke of.
    Also, the outer canister is double skinned and it looks like the small round hole is in the inner skin.
    So, it's still a bit of a mystery!!
    Last edited by bob-in-dav; 16-02-2018 at 08:08 PM.

  10. #10
    Join Date
    Nov 2007
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    Perhaps caused by a steel worm? I recall BP had problems with steel worm on a North Sea oil rig many years ago.
    Drives a Smart Cdi - 65 to 85 MPG

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