Thread: Help Identify A 10mm Bolt Missing Its Hole...

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  1. #1 Help Identify A 10mm Bolt Missing Its Hole... 
    SE Level Member 01Blackgtp's Avatar
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    The entire front of this car has been disassembled transmission/starter/radiator/entire front suspension and brakes, and now reassembled. None of us can identify a lone bolt discovered under my bolt organizer tray. Egr is off and staying off but I don't think it's a bolt from that.

    Appears to be some factory locktite applied to only the side showing in the picture. Overall a pretty clean bolt so I know its nothing from the LIM removal.

    Anyone have any ideas?

    p.s. this is why you write down where bolts came from too.

    Key for scale.
    Bolt.jpg
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  2. #2 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    GTX Level Member industrialfish's Avatar
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    Doesn't look like locktite, but more like teflon tape. That looks like the bolt that holds the pulley onto the tensioner. But you'd know if you were missing that.
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  3. #3 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Turbo is the way to go. BillBoost37's Avatar
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    When you say 10mm, is that the head size or bolt size?

    White is typically the color of factory teflon. Which you'd only find in a coolant jacket. The shoulder of the bolt makes it not a LIM bolt w/o question. Possible places you'd find this bolt are holding the passenger side engine mount into the head, maybe the SC belt tensioner held to the block. But the shoulder looks more engine mount than tensioner. or.. a timing cover bolt right below the outlet for the radiator hose and the other side at that same level on the engine.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  4. #4 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    SE Level Member 01Blackgtp's Avatar
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    10mm head size. Timing cover wasn't removed, cradle was lowered on he drivers side and the transmission came out through that side. Belts and tensioners are all on and right so its from somewhere on the drivers side of the motor more than likely.
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  5. #5 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Turbo is the way to go. BillBoost37's Avatar
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    I'm thinking.. and now that you've narrowed the area, that helps.

    What year is the car? I'd have to say.. that looks like a caliper bolt. They aren't 10mm heads though.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  6. #6 Re: Help Identify A 10mm Bolt Missing Its Hole... 
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    Bill I am impressed
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  7. #7 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    SE Level Member 01Blackgtp's Avatar
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    2001, brakes control arms and struts are back in place.
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  8. #8 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Turbo is the way to go. BillBoost37's Avatar
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    There aren't many 10mm shouldered bolts in the engine bay. Is there a chance you guys found a bolt laying on the subframe etc and put it into the bin? I have seen this happen before.

    Hey.. I just figured it out. Check that head size with an actual socket. It's 11mm isn't it.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  9. #9 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Turbo is the way to go. BillBoost37's Avatar
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    Logan... You never saw the threads I put up when I got bored? Stump BillBoost, literally asked people to post bolts and I'd tell them where they went. It's something you do after...you've worked on a platform too much.

    I finally got my head off the motor/trans and thought about how someone may have done this differently that I would.

    If that's the bolt I believe it to be.. he left the rack on the subframe when he lowered it.
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  10. #10 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    SE Level Member 01Blackgtp's Avatar
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    it is an 11mm! and the steering rack did stay in the subframe.
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  11. #11 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Killa Bee Scottydoggs's Avatar
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    thats the shaft bolt then for the intermediate shaft. lift the boot and put it back in.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  12. #12 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Killa Bee Scottydoggs's Avatar
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    and its the only 11 mm bolt i know of under the hood too.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  13. #13 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    SE Level Member 01Blackgtp's Avatar
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    I bet I threaded one of the 2 bolts from the removed EGR into the ISS. So if I tear apart my garage ill find that there is another extra bolt that matches the wrong one in the steering shaft.
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  14. #14 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Killa Bee Scottydoggs's Avatar
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    if you put another bolt in that spot just check that its tight and not spinning free. if you made it go in aka stripped it, your best just leaving that bolt in there, the 11 mm head bolt may not work any more if the threads were different.

    match it up to the egr bolt you have. see if the threads look the same.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  15. #15 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    SE Level Member 01Blackgtp's Avatar
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    If I stripped it ill replace the assembly. The mystery bolt threads into where the egr came out so I doubt anything stripped.
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  16. #16 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Killa Bee Scottydoggs's Avatar
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    sounds good. you could just leave it there then.

    98 Buick Regal GS, F body brakes, Caddy STS wheels, tinted tails L36 bottom end, lightly ported heads, 1.95 roller rockers, headers, gen 5 N* 3.0 pulley, FSIC, 42 lb injectors, a BrandonHall rebuilt trans, DHP tuned and AEM water/Meth injection https://goo.gl/gpV5kW
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  17. #17 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Turbo is the way to go. BillBoost37's Avatar
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    Thank you...thank you.. I'm here all week!

    See.. you didn't use BillBoost procedure, then misled us on the bolt size. Aaaaaand we still figured it out!
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  18. #18 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    SE Level Member 01Blackgtp's Avatar
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    I am impressed sir you're a bolt identifying god among men.
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  19. #19 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    Turbo is the way to go. BillBoost37's Avatar
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    Glad to show you the 3800 trivia that occurs from dealing with too much stuff. lol

    A guy once posted a wiring harness laid out on the ground. Took close up pictures of each connector and labeled them A-whatever. That one was fun, and simple, too much work I say
    I drink..so consider that when reading my posts.

    2010 Audi A6 Dual IC's
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  20. #20 Re: Help Identify A 10mm Bolt Missing Its Hole... 
    SE Level Member 01Blackgtp's Avatar
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    Thankfully I only had one mystery bolt, with how bad the car looked a month ago and with 5 guys working on it on the weekends only I honestly expected many more extra parts.
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