antonyg
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| posted on 13/2/05 at 03:06 PM |
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broken stud extractor
HELP i had a broken exhaust manifold stud so drilled a hole in it and started screwing in a stud extractor but managed to snap that aswell, tried
welding a bolt to it to unscrew it (no good) it wont drill either is there another way or will i have get a new cylinder head any help would be
greatly appreciated
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Peteff
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| posted on 13/2/05 at 03:35 PM |
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Can you get a thin bit in around the extractor and take most of the middle out of the stud. You might be able to tap a thread in what's left.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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rusty nuts
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| posted on 13/2/05 at 04:08 PM |
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Try welding a nut placed over the end of the stud extractor using high amps , let it cool a bit then try turning nut clockwise . If nut shears try
again , have had to weld several nuts to the same sheared bolt etc in the past to remove them. If all else fails it may be possible to get it removed
by an engineering company using spark erosion but may be expensive. Sorry I don't know of a locost method of spark erosion,.H.T.H. Rusty
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rusty nuts
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| posted on 13/2/05 at 04:10 PM |
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P.S. throw eeziouts away they are more trouble than they are worth!
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antonyg
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| posted on 13/2/05 at 04:10 PM |
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Thanks i'll try welding a nut to it
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big_wasa
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| posted on 13/2/05 at 04:57 PM |
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What head is it?
How much of the extractor is left in it?
I have done the same in the past I used a small die grinder(dremell) and a lot of patiants and ground the extractor out..
I would also recomend binning the easy out ,and buy yourself a heli coil kit I swear by them...
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britishtrident
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| posted on 13/2/05 at 05:44 PM |
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Eazi-outs should be banned
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GeoffT
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| posted on 13/2/05 at 05:56 PM |
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Ditto with the easi-outs, if a stud is so tight it snaps off, an easi-snap hasn't got a hope in hell.
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antonyg
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| posted on 13/2/05 at 06:06 PM |
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eaziouts are now in the bin never using them again tried allsorts in the end managed to drill it out with small masonry bit and hammer drill (took
ages though) just need to enlarge hole and tap a new thread
went through 3 masonry bits and 10 3mm steel bits cheaper than sending head away for repair though
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big_wasa
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| posted on 13/2/05 at 10:38 PM |
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A heli coil insert is much better 
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chunkielad
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| posted on 14/2/05 at 09:48 AM |
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Didn't see this in time but when I got a bolt stuck in my bike, my engineering bloke who lives next door said that masonary bits (sharpened if
pos) are the ONLY thing that will get an easy-out or bolt out.
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nick baker
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| posted on 15/2/05 at 11:24 AM |
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www.toolgear.co.uk/ acatalog/socketry-spares.htm
I've used this type of stud extractor for years to great effect... They're bloody billiant for winding out the head-studs etc on engines
too.
The inventor of "easy" outs should be sent to his grave by a hail of his own "tools"
(If thousands of people buy it, is it a poor design?)
EDIT: If using the "weld on a nut" technique (works well) MAKE SURE you have cooled the stud properly before trying to undo it!!! you
don't want it to be soft and expanded when you try to un-do it!!
[Edited on 15/2/05 by nick baker]
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Peteff
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| posted on 15/2/05 at 11:46 AM |
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I've used stud extractors but I alway drill as much of the bolt as possible out and use the biggest size available. The ones in the earlier post
only work if you have enough stud to grip and if there's that much left you can usually get them with mole grips.
yours, Pete
I went into the RSPCA office the other day. It was so small you could hardly swing a cat in there.
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