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stud extractor
Posted: Mon Dec 24, 2012 10:20 pm
by Cloggy Saint
I'm looking to get a stud extractor but don't know which would be the best type as there seem to be many variations. Can someone recommend a good set?
Re: stud extractor
Posted: Mon Dec 24, 2012 10:23 pm
by Das_BMW_E30
Re: stud extractor
Posted: Mon Dec 24, 2012 10:24 pm
by DanThe
Two nuts are the usual piece of kit.
Depends if the studs are intact, rusted in or broken off
Re: stud extractor
Posted: Mon Dec 24, 2012 10:27 pm
by maxfield
DanThe wrote:Two nuts are the usual piece of kit.
Depends if the studs are intact, rusted in or broken off
That used to be the way I did it, until I used a stud extractor.
Very handy tool.
Re: stud extractor
Posted: Mon Dec 24, 2012 10:29 pm
by Das_BMW_E30
Snapped exhaust studs, in ally heads....
Put a nut over the broken stud, weld up the inner of the nut to the top of the broken stud, and then just fit a spanner and unwind...
The heat generated lets the broken stud unwind...
Re: stud extractor
Posted: Mon Dec 24, 2012 10:38 pm
by maggspower
Roller stud extractors are good, but they wont get stuck ones out. For that you need 2 nuts, 2 spanners, and some heat and time. Remember if it takes half an hour to get one stud out intact, that is a good time saving on getting a broken one out.
Re: stud extractor
Posted: Mon Dec 24, 2012 10:44 pm
by DanThe
I use one of these for scrap studs -
http://www.toolbuddy.co.uk/franklin-imp ... -948-p.asp
You wont be able to reuse them after though which is where two nuts and spanners come into it
Re: stud extractor
Posted: Mon Dec 24, 2012 10:56 pm
by Brianmoooore
maggspower wrote: Remember if it takes half an hour to get one stud out intact, that is a good time saving on getting a broken one out.
A point that I frequently try to impress on my current 'apprentice', but, with the impatience of youth, is often ignored!
Re: stud extractor
Posted: Mon Dec 24, 2012 11:23 pm
by Topblag
I've got the Irwin set and thus far they have taken out every one I've set them on to. I've just bought the additional ones to make up the complete set.
Re: stud extractor
Posted: Tue Dec 25, 2012 12:01 am
by Cloggy Saint
I don't have any broken (yet) or stuck studs, I just want the right tool for the job.
Topblag wrote:I've got the Irwin set and thus far they have taken out every one I've set them on to. I've just bought the additional ones to make up the complete set.
Like this one?
http://www.ebay.co.uk/itm/Irwin-Bolt-Gr ... 20cb732f5a
Re: stud extractor
Posted: Tue Dec 25, 2012 12:28 am
by Topblag
That's the ones. Best example was a rounded bolt on a drop link, which had also been attacked with a grinder so the bolt was not only rounded, there was only about 3mm left on it. 6 point socket would grip it but couldn't get enough purchase to turn it. Irwin remover took it off in seconds.
Re: stud extractor
Posted: Tue Dec 25, 2012 6:43 am
by shedrool83
Irwin bolt grip has saved me a lot of swearing alot of time working on old cars.I haven't come across a rusty nut it hasn't removed yet.
Not tried them on broken studs tho.
Re: stud extractor
Posted: Wed Dec 26, 2012 1:25 pm
by Lurch320i
What about an exhaust stud that has snapped flush with the head?is drilling and helicoil the only way to get it out
Re: stud extractor
Posted: Wed Dec 26, 2012 1:28 pm
by daimlerman
Cloggy Saint wrote:I don't have any broken (yet) or stuck studs, I just want the right tool for the job.
Topblag wrote:I've got the Irwin set and thus far they have taken out every one I've set them on to. I've just bought the additional ones to make up the complete set.
Like this one?
http://www.ebay.co.uk/itm/Irwin-Bolt-Gr ... 20cb732f5a
So you are looking for an answer to a problem that does not,yet, exist?

Re: stud extractor
Posted: Wed Dec 26, 2012 1:40 pm
by Das_BMW_E30
Lurch320i....Snapped exhaust studs, in ally heads....
Put a nut over the broken stud, (even when it's flush with the head) weld up the inner of the nut to the top of the broken stud, and then just fit a spanner and unwind...
The heat generated lets the broken stud unwind...I have seen this carried out on a Sierra Cosworth Head, with numerous broken studs...very effective.
Re: stud extractor
Posted: Wed Dec 26, 2012 1:58 pm
by maggspower
daimlerman wrote:Cloggy Saint wrote:I don't have any broken (yet) or stuck studs, I just want the right tool for the job.
Topblag wrote:I've got the Irwin set and thus far they have taken out every one I've set them on to. I've just bought the additional ones to make up the complete set.
Like this one?
http://www.ebay.co.uk/itm/Irwin-Bolt-Gr ... 20cb732f5a
So you are looking for an answer to a problem that does not,yet, exist?

I agree with the above. If you are just doing your own head just use the 2 nut technique, it should get them all out with some patience.
I think we are a crossed purposes as well with the term "stud extractor". I think the type th OP is talking about is ones for getting intact, good condition studs out. Not "easy outs" or the ones for fooked studs, snapped, or round headed bolts.
IMO you would be better off getting a heat source, like a propane/mapp gas blow lamp, as this WILL loosen stuck studs so they can be removed using the 2 nut method, and is no end of use elsewhere too.