JMB RetrofitsEM Tuning
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  1. #1
    Missed A Gear

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    Water pipe failure...Potential disaster, Averted

    After yesterdays escapades I thought Id write up what has happened to make s4 owners aware of this possible problem.

    When doing a routine oil change I noticed a steal pipe running from the oil cooler weep coolant. On further inspection it seems that the metal pipe has corroded through to a hole. Realising that the pipe would have to be taken out and replaced I proceeded to turn the pipe in every possible orientation to try and slide the pipe out from between the front engine mount and block. However this was not possible without removing the front end and taking off the front engine mount. I made the decision to cut the pipe in the middle, slide it out and then fabricate a new pipe. You can see from the pics below that the pipe was very close to complete failure in several places, which would have resulted in very warm oil and possible engine failure.




    pipe removed and cut in half

    close up of corrosion


    pipe was cleaned up to find many small holes and thin pipe walls



    new pipe made up from copper pipe and yorkshire fittings


    fabricated pipe in new location under engine mount



    it would my advice to check this component during a timing belt service interval as change out at this time would be straight forward.

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  3. #2
    6th Gear

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    does your car have its engine under tray still?

  4. #3
    Missed A Gear

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    yes. but it had to be removed during oil changing and pipe replacement. i will keep it removed untill i am sure there are no more leaks.

  5. #4
    6th Gear

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    thats really interesting then. id have thought maybe stone chip damage could have started the corrosion on that pipe. maybe something was spilt all down there in the past and started the corrosion.

    bullet successfully dodged

  6. #5
    Missed A Gear

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    no the standard pipe is located further up out of the way. if only audi's leaked more oil then this would probably never of happened. l0l

  7. #6
    "Stick a V8 in it!"

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    I'm not sure about using copper pipe on an engine...

    Copper tends to work harden quite easily and would then fracture...

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
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  8. #7
    phoenixv6quattro's Avatar
    staylowmovefast

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    I can vouch for that, fabricated some copper pipe for my old 21 turbo. Lasted under 3 months before pissing everywhere!
    IT COULD ALWAYS BE WORSE SO KEEP ON SMILING

  9. #8
    "Stick a V8 in it!"

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    Ye, the pipes only about 20 or 30quid new from audi by the looks of it...

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  10. #9
    phoenixv6quattro's Avatar
    staylowmovefast

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    Nice write up though buddy. Its good when someone takes the time out to post pics etc to make other owners aware of the potential problem, and gives them the heads up on how to fix it! FAIR PLAY.
    IT COULD ALWAYS BE WORSE SO KEEP ON SMILING

  11. #10
    Missed A Gear

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    yes twenty to thirty quid is cheap but it would take hours to remove the front end to get the replacement pipe in place. which was not a job i was looking forward to do to replace one pipe. the copper should be fine i made a bracket to hold the copper from moving and fracturing.

  12. #11
    "Stick a V8 in it!"

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    keep an eye on it...

    2000 A4 1.8T Sport Quattro Avant, Berry Pearl
    2000 A4 1.8T Sport Quattro Saloon, Black-ish
    1997 S4 - PPC £999 Challenge Track Car Build
    TD5 Land Rover Defender build


  13. #12
    phoenixv6quattro's Avatar
    staylowmovefast

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    A very alert and watchfull eye.......
    IT COULD ALWAYS BE WORSE SO KEEP ON SMILING

  14. #13
    Geeman's Avatar
    Low Life

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    I had to have this very pipe replaced on my A8 2.8 as it was losing water through the same part!
    NEW 6 cylinder 40mm front springs - £40

    PM me for more info

  15. #14
    heymynameismark's Avatar
    Cool beans.

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    Good write up that! Well done. As said, keep an eye on it though!

  16. #15
    Reverse Gear

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    Would my 2.6 quattro have the same pipe as I'm loosing water and can't see where from ?

 

 

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