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  1. #1
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    Angry Snappety, Snap Snap!

    Today, in my infinite wisdom and against all prudent judgement, I decided to replace injector number 3 this afternoon. This exercise is nothing new to me. I've done this two more times already.

    So I get busy and then I managed to snap the ASA bolt that holds the injector bracket:

    Click here to enlarge

    I as able to make 2 complete turns of the bolt before it snapped off.

    So this is a pretty messed up situation right now as cylinders 3 and 4 will have no compression at all. This means I can't drive the car.

    My suspicion is that in the cold weather (4 degrees Centigrade) there was enough difference in contraction between the aluminium head and the steel ASA bolt. The bolt probably decided to dig in the head and carve a new thread in it. Then it got stuck and then I snapped it off.


    Suggestions, opinions and ideas are highly appreciated at this point.
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  2. #2
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    Screw extractor.
    If the threads are messed up chase them with a thread die.
    Last edited by alpinedevil335; 02-24-2013 at 09:31 PM.

  3. #3
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    Will the screw extractor fit in this area? It's pretty tight in there...
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  4. #4
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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    Will the screw extractor fit in this area? It's pretty tight in there...
    Yep. You'll need an extension.

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    Try using an easy out. Worse case scenerio you'll just have to drill it and tap it.
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    Sucks man. First, try waking up from your bad dream. If you find that you're not asleep, then I'd advise the above options next.

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    Here's what I would do:

    1) Heat the bolt and surrounding area, obviously not with an open flame (especially if it's still cold when you try extracting). Any kind of lubricant will help with extracting a bolt, but there are some special products for that.

    2) You said you were able to get 2 turns out before it snapped. If there is any bit of thread sticking out, try to get in there with a good pair of long nose plyers with little teeth at the end that bite (Snappety, Snap Snap Snap-on) and continue un-screwing.

    3) If all else fails, you'll have to drill it out or use an extractor, none of which I suggest doing if you've never done that before.

    Good luck.

  8. #8
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    Looks like I'll be towing it to a shop with more experience than me. I've never had to remove a snapped screw before and I sure as hell won't try to learn on one that's stuck onto N54 aluminium head.

    This is how a $2.50 bolt turns into a few hundred dollar labor bill. Click here to enlarge
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  9. #9
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    That sucks.. and karma is a $#@!

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    Oh snap!

    Click here to enlarge

    But seriously they should be able to drill that out and retap the thread without too much trouble.

    Smart choice having it towed to a shop that has done this before though.

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    0 out of 1 members liked this post. Yes Reputation No
    Just rig up some alternative way to hold the injectors down.
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    id say heat it but you got nothing to grip on to turn the bold you might want to drill it our then use a time sert

    ^ and what terry said. my guess would be get a piece of steel and take measurements where all 6 injectors grind for injector clearance, go drill 2 holes and undo the other brackets (don't snap the heads lol) then use the one big bracket to hold all 6 injectors down. hope that made sense lol..

    i had a similar issue when installing my turbos :/ almost snapped the bolt that goes in the turbos but took it easy and ended up heating it. and came out after a PITA.



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    My issue with heating the head is that it might warp. So I'd rather avoid it if I can.
    From all the things I've lost,
    I miss my mind the most!
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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    My issue with heating the head is that it might warp. So I'd rather avoid it if I can.
    yeah i heated the tip of the bolt. and went no where near the head but yeah yours looks nothing like my mine :/ good luck buddy.
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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    Today, in my infinite wisdom and against all prudent judgement, I decided to replace injector number 3 this afternoon. This exercise is nothing new to me. I've done this two more times already.

    So I get busy and then I managed to snap the ASA bolt that holds the injector bracket:

    http://www.bimmerboost.com/images/im...ctorbolt-1.jpg

    I as able to make 2 complete turns of the bolt before it snapped off.

    So this is a pretty messed up situation right now as cylinders 3 and 4 will have no compression at all. This means I can't drive the car.

    My suspicion is that in the cold weather (4 degrees Centigrade) there was enough difference in contraction between the aluminium head and the steel ASA bolt. The bolt probably decided to dig in the head and carve a new thread in it. Then it got stuck and then I snapped it off.


    Suggestions, opinions and ideas are highly appreciated at this point.
    happened to me as well. you need to drill it out and replace the bolt
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  16. #16
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    Trying to drill that out is not going to be any fun at all.
    Best of luck Vasillalov, I'm afraid you're gonna need it.
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  17. #17
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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    My issue with heating the head is that it might warp. So I'd rather avoid it if I can.
    Youre joking right......

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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    Looks like I'll be towing it to a shop with more experience than me. I've never had to remove a snapped screw before and I sure as hell won't try to learn on one that's stuck onto N54 aluminium head.

    This is how a $2.50 bolt turns into a few hundred dollar labor bill. Click here to enlarge
    BMW, and their: "Single use aluminum bolts".

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    I would call a few independant shops and see if they'd just send someone out to look at it, should be a lot less expensive than towing the car. I agree with everyone else though, a screw extractor is needed, and that's not a great location to learn how to use one.

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    Click here to enlarge Originally Posted by vasillalov Click here to enlarge
    (4 degrees Centigrade)
    We measure temperature in Fahrenheit here in Illinois...
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  21. #21
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    Good luck with the shop you've chosen.
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  22. #22
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    Click here to enlarge Originally Posted by Black Sheep Click here to enlarge
    We measure temperature in Fahrenheit here in Illinois...

    Here in Illinois we need to switch to the system that the ENTIRE WORLD is using! Click here to enlarge
    From all the things I've lost,
    I miss my mind the most!
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  23. #23
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    Click here to enlarge Originally Posted by uniter Click here to enlarge
    Good luck with the shop you've chosen.

    Thanks,

    I am towing it to a master mechanic who has been working on Porsches for the last 30 years. At this point, I need someone with a lot of experience under their bel
    From all the things I've lost,
    I miss my mind the most!
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  24. #24
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    Not bringing it to the dealer was a good start, probably would have got you for $400......sir we need to reprogram the injectors, etc, etc! I bet $100 at the guy you bring it to, tops!
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  25. #25
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    I could fix it for ya........ But you know

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