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Engine Mechanical TopicsDiscussion for motor builds, cams, head work, stripped bolts and other engine related issues. The good and the bad. If it goes round and around or up and down, post it here.
For anyone's future reference who has the luck to shear a bolt or stud, I'd really recommend hunting down this particular type of stud extractor
It comes with guides for the supplied drill bit and a parallel splined extractor bits. The 'nuts' you see are designed to fit over the extractor bit so you can unscrew the stud. Drill through the stud which will relieve the pressure on it, tap in the splined shaft, add nut and remove.
I wouldn't use or recommend the taper type of stud extractor
As you screw these into your broken stud, the first thing that happens is you are spreading the broken end of the stud outwards locking it tighter into it's threaded hole, hence why you get people snapping them and leaving the tip jammed in the stud.
For anyone's future reference who has the luck to shear a bolt or stud, I'd really recommend hunting down this particular type of stud extractor
It comes with guides for the supplied drill bit and a parallel splined extractor bits. The 'nuts' you see are designed to fit over the extractor bit so you can unscrew the stud. Drill through the stud which will relieve the pressure on it, tap in the splined shaft, add nut and remove.
I wouldn't use or recommend the taper type of stud extractor
As you screw these into your broken stud, the first thing that happens is you are spreading the broken end of the stud outwards locking it tighter into it's threaded hole, hence why you get people snapping them and leaving the tip jammed in the stud.
This looks like the one in his picture.OEMTOOLS 24376 25 Piece Screw Extractor and Drill and Guide Set, Screw Extractor Set, Stud Removal Tool, Stud Extractor, Drill Bit Guide, Stud Remover https://a.co/d/arcShgX
if you search extractor bit and guide on Amazon, lots of different sets come up.
Phill13 is from England so I'm guessing his source may not be the best source for us state side
I have a set like that just different case I bought off the Snap-On truck years ago, they will actually warranty them, go figure. The replacement items come in a bag from Rigid. I would stay away from discount brands because they been around long enough for people to start copying them
I can say they take quite a bit of punishment and have been the best extractors I have ever used
For anyone's future reference who has the luck to shear a bolt or stud, I'd really recommend hunting down this particular type of stud extractor
It comes with guides for the supplied drill bit and a parallel splined extractor bits. The 'nuts' you see are designed to fit over the extractor bit so you can unscrew the stud. Drill through the stud which will relieve the pressure on it, tap in the splined shaft, add nut and remove.
I wouldn't use or recommend the taper type of stud extractor
As you screw these into your broken stud, the first thing that happens is you are spreading the broken end of the stud outwards locking it tighter into it's threaded hole, hence why you get people snapping them and leaving the tip jammed in the stud.
What about the small part of the head i drilled into? Concerning? Not?
I can't see it very well in your picture, but if you got off center far enough to get into the head, then I would advise pulling the head and taking it to a machine shop. More than likely, if you got into the head a little it will just be in the threads on one area and a new stud will hold just fine. But, regardless, the machine shop can set it up in a rigid fixture and use a mill to remove the broken stud. Once you are off center a drill will always want to follow that first hole. A mill can hold the center and correct any offset, then install a thread inset properly if it is needed.
Pulling the head isn't hard, and sometimes you just need to stop and let someone with the proper tools (machine tools in this case) take over and get you out of a jam. As others have posted, those drill guides are a worthwhile investment for this job if you are going to do it in the future. Welding and all that is great, I do that stuff at work all the time, but the average guy in a garage just isn't set up with everything and if you don't do that kind of stuff already, it is best not to try and learn on you bike.
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