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Thread: help rounded head bolt

  1. #1
    Senior Member shammy's Avatar
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    Default help rounded head bolt


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    hey all,going through hell , i brought a 4age that had been sitting for a bit, everything seemed pretty tidy, had been running but thought what the hell i will give her a clean up, went to do the head gasket and one of the bolts slipped, tryed the smaller socket, tryed nail punch, tryed eze out (like the enginge recyclers sujested) and that snapped in the bolt!!! so i am after ideas or someone whom can help, i will upload pics, anyone around wodonga albury, hell recommend someone in melbourne i just want to get this thing built, my ae86 is sitting up on stands : (. So people, shops what ever you can sujest . i will up load pictures tonight

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    Senior Member sleeper_13's Avatar
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    redrill and tap a new thread, if youre not confident call a thread specialist

  • #3
    Senior Member shammy's Avatar
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    Quote Originally Posted by sleeper_13 View Post
    redrill and tap a new thread, if youre not confident call a thread specialist
    mate what type of drill bit would you recomend as i said theres an eze out in there!

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    Junior Member filfrederick's Avatar
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    Quote Originally Posted by shammy View Post
    mate what type of drill bit would you recomend as i said theres an eze out in there!
    You can use an ARTU drillbit that has a carbide tip kind of like a masonry bit. but i would take it to an engineering shop to be removed, it makes it so much harder to remove when someone has made a mess of it.

    the correct method would be to put it in a mill and drill the head off the bolt, remove the head and the bolt would be easy to unscrew as there is no longer any tension on it.
    -Phil

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    Senior Member adds's Avatar
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    If the ezy out has snapped in the bolt it will be pretty hard to get out with out the correct tools. Usually ezy outs are hardened, if u feel confident you can centre drill it and a masonry drill will drill through it than put you tap back through it. In saying this if you don't feel confident just call the thread repair guys. You can never guarantee that it will be center and straight without a drill press.

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    Senior Member sleeper_13's Avatar
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    dont attempt to break the eze out with a punch as thats basically impossible because it has no room to expand to break and will only make it harder to get out, i no specialist but a machine shop shoud be able to help you out

  • #7
    Noooob
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    I'd try a quality hex / deep dish socket first... Or getting one size smaller and tapping it on with a hammer...

    Allot of workshops will be more than happy to help you get it out...
    Ae86 Drivingclub - Toyota AE86 Car Club where AE86 | KE70 | Toyota 86 / GT86 | Subaru BRZ | Scion FRS owners

  • #8
    Senior Member shammy's Avatar
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    thanks guys, im guessing my closest shop would be melbourne somewere any ideas?
    oh and i did google this but they dont really advertise head stud removal lol

  • #9
    Noooob
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    There are machining / mechanic shops in Albury... Just take it in on a trailer and ask them how much... but try the hex socket first / size smaller... How badly rounded is it?
    Ae86 Drivingclub - Toyota AE86 Car Club where AE86 | KE70 | Toyota 86 / GT86 | Subaru BRZ | Scion FRS owners

  • #10
    Senior Member shammy's Avatar
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    there 10mm tried the next one down 11/32 i think , im guna try a few engineering placese the engine recondishing place didnt want to touch it, and a few mechanics just said drill it, its a deffinetly rounded

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