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Exhaust stud drilled out but went alittle to deep ?

Discussion in 'A4/S4 forum(B5 Chassis)' started by andysAko4, Oct 24, 2010.

  1. andysAko4
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    andysAko4 Member

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    [Oct 24, 2010]
    Jst drilled out the last stud but got alittle carried away and went to deep.:keule: pillock yes I know etc
    drill went into some cavity , What sort of damage will I have caused ? New head I suppose.:(
    Stud was top row 5th from front of car.

    Thks Andy
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  3. adamss24
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    adamss24 Well-Known Member

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    [Oct 24, 2010]
    What engine is that ?
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  4. andysAko4
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    andysAko4 Member

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    [Oct 25, 2010]
    engine is 1.8 turbo petrol = AEB
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  5. jcb
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    jcb Active Member VCDS Map User

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    [Oct 26, 2010]
    It a coolant galley there IIRC.
    should be fine if you can tap the hole and fit a new stud. just make sure it is properly sealed with some higher temp loctite. it doesnt matter if the loctite doesnt lock because of the heat cycles it should provide enough of a seal to stop any leakage. it is not under that much pressure anyway.
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  6. auroan
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    auroan Active Member

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    [Oct 26, 2010]
    It be a good idea to flush the coolant with the thermo stat out as well. Just to get rid of any swarf that may have got into the system with the drilling.
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