View Full Version : Bolt Removal Extraction Kits
Guys if you've been following the updates from my Cavalier Project Thread you'll know that I've managed to snap a mild steel exhaust manifold stud in the ally head of my EcoTec which I've been told is a very common occurrence.
I'm going to buy a extraction kit to do it by I'm overwhelmed by the choice and different types
What's the difference between this one;
http://www.screwfix.com/p/trend-pro-grabit-screw-and-bolt-remover-2-pieces/21391?_requestid=310291
and this one;
http://www.screwfix.com/p/screw-extractor-5-piece-set/18643
Which is the best set for this job?
Or can somebody link me to something better? :nenau
solarman216
02-05-2016, 00:02
The big problem with all of these tapered extraction devices is they expand what is left of the stud once you have drilled it so making it tighter than it was, most are for all practical purposes useless, one of the best is the parallel shaft with 3 or 4 sharp vanes running the length of the shaft, you drill a hole the same diameter as the shaft and hammer it in, the sharp vanes cut into the stud and with a bit of heat on Ali it will come out easy, the next best is set a set of left hand drills, progressively, drill out the stud, usually when you get near to base size of the thread it just unscrews while you are drilling, incidentally cellulose thinners is a good release agent between Ali and steel, Rick
The big problem with all of these tapered extraction devices is they expand what is left of the stud once you have drilled it so making it tighter than it was, most are for all practical purposes useless, one of the best is the parallel shaft with 3 or 4 sharp vanes running the length of the shaft, you drill a hole the same diameter as the shaft and hammer it in, the sharp vanes cut into the stud and with a bit of heat on Ali it will come out easy, the next best is set a set of left hand drills, progressively, drill out the stud, usually when you get near to base size of the thread it just unscrews while you are drilling, incidentally cellulose thinners is a good release agent between Ali and steel, Rick
Have you got a link to a decent set Rick?
I've just purchased a set of cobalt left handed drill bits, I'll need a pilot hole anyway to use an extraction kit, hopefully when the left handed bit bites it will spin the stud out :bow
Mobieus_uk
02-05-2016, 11:48
don't worry if it all goes wrong, as long as the stud is out you can oversize the hole and use a helicoil kit, they come in all sizes and are great for restoring a knackered thread
don't worry if it all goes wrong, as long as the stud is out you can oversize the hole and use a helicoil kit, they come in all sizes and are great for restoring a knackered thread
Watched a video of that last night too, looks like a decent bit of kit
Terrano Steve
02-05-2016, 13:30
I would agree with what Rick has said those tapered ones are really only any good for removing a snapped stud that is already loose I don't think it has any chance on a steel stud grown in to alloy.
I have good success removing studs with the mig. drop a washer on top of broken stud even if it has broken below the surface then fill up with weld right up to the washer allow it to cool then just undo it. In unlikely event it is still hanging on weld a nut to the washer so you have something better to grip to.
zippy656
02-05-2016, 16:11
I would agree with what Rick has said those tapered ones are really only any good for removing a snapped stud that is already loose I don't think it has any chance on a steel stud grown in to alloy.
I have good success removing studs with the mig. drop a washer on top of broken stud even if it has broken below the surface then fill up with weld right up to the washer allow it to cool then just undo it. In unlikely event it is still hanging on weld a nut to the washer so you have something better to grip to.
Neat trick
OK guys so I used a left handed drill bit on the snapped stud and have gone as deep as I dare and it hasn't spun free, I have a 3mm hole now in the stud so I presume at this point it's extractor time
Space is tight as I've done it with engine still in the car by going in through the grille and have removed the radiator. Quick Tap with this spring loaded centre punch I have made a nice central point to start drilling and off I went with my 3mm left handed cobalt bit, slow and firm :thumb2
https://image.ibb.co/cLVWXv/IMG_20160508_WA0017.jpg
After a few mins
https://image.ibb.co/nPuEkF/IMG_20160508_WA0018.jpg
End result
https://image.ibb.co/cbXdCv/IMG_20160508_WA0023.jpg
As for extractors I def want one that I can get a ratchet onto the end of, someone please link me to a decent set, I'm overwhelmed with the choice :(
Not that it would be of any use in this situation, but I was watching an episode of Car SOS the other day and they were using one of these,an induction heator seems to work much better than a blow lamp and less risk of melting anything els :rolleyes:
https://www.youtube.com/watch?v=gFh8Pci5gpc
Not that it would be of any use in this situation, but I was watching an episode of Car SOS the other day and they were using one of these,an induction heator seems to work much better than a blow lamp and less risk of melting anything els :rolleyes:
https://www.youtube.com/watch?v=gFh8Pci5gpc
Cheers mate, that's a handy bit of kit actually although I don't think I'd have gone near the head with that as I've heard horror stories about the head warping and needing to be replaced on these.
After a lot of web trawling and looking through various different forums, I've bit the bullet and ordered a set of Sealey Square Taper type
http://www.ebay.co.uk/itm/201536843116?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Mobieus_uk
09-05-2016, 13:11
No ware near deep enough, use one of the bolts you have out as a guide, then step up in drill sizes, hardest bit is starting off centre but looks like your spot on, it will either start to losen or you just keep going with drill bits until all thats left is thread that will peal out like tin foil
terranosaurusdoug
09-05-2016, 14:08
Holy moley, that is well in there mate, good luck fella.
No ware near deep enough, use one of the bolts you have out as a guide, then step up in drill sizes, hardest bit is starting off centre but looks like your spot on, it will either start to losen or you just keep going with drill bits until all thats left is thread that will peal out like tin foil
Yeah I'm going to go deeper, I was getting tired and sweaty by the time I'd come to that point last night, I'd done the important bit without mishap so I was happy leaving it there.
Holy moley, that is well in there mate, good luck fella.
Tell me about it :doh Thanks buddy :thumbs
Square Taper Stud Removers delivered yesterday, hope the remove this stud cleanly :bow
https://image.ibb.co/cmzEkF/20160510_231258.jpg
terranosaurusdoug
11-05-2016, 09:41
I'm keen to find out how this goes mate, it really is in there properly!
macabethiel
11-05-2016, 09:42
I have done similar to you with drilling then increased bit size until there is less than a mm between the hole and the thread. Then as I am usually slightly off centre part of the thread has just come away and when I have tapped a new thread its done the trick. That said last time was about 8 years ago with a seized steel in steal stud.
Best of luck !
I'm keen to find out how this goes mate, it really is in there properly!
Well I hope it goes swimmingly, depends how many karma points I've got that day I suppose :lol :lol
I have done similar to you with drilling then increased bit size until there is less than a mm between the hole and the thread. Then as I am usually slightly off centre part of the thread has just come away and when I have tapped a new thread its done the trick. That said last time was about 8 years ago with a seized steel in steal stud.
Best of luck !
I have space to go up to the 4mm bit which I may do and use the next square tapered remover up from the smallest one in the pack, better grip on the thread and better purchase on the remover hopefully too :bow
Got me a stud and and a spare at lunch and still had change from me fiver for a sarnie :lol
https://image.ibb.co/cuYg0Q/20160511_124149.jpg
https://image.ibb.co/iwaiEk/20160511_124131.jpg
So I did some more drilling all the way to the end as far as I dare go compared to another stud I had out, then I decided that I still had plenty of space left so I stepped up the drill bit size and used the next sized extractor up.
It worked a treat :naughty
Hammered the extractor in as far as it would go and got the grips out
https://image.ibb.co/cRBquk/IMG_20160511_WA0006.jpg
https://image.ibb.co/ej7kS5/IMG_20160511_WA0008.jpg
New Stainless Bolt from Vauxhall
https://image.ibb.co/nFvuLQ/IMG_20160511_WA0012.jpg
Manifold back on with new gasket
https://image.ibb.co/iXvGZk/IMG_20160511_WA0019_1.jpg
Not been able to start it up yet as got to refit the radiator and put some more coolant in it first which |I hope to do tonight
macabethiel
12-05-2016, 09:05
Well done great Pics too !
So I did some more drilling all the way to the end as far as I dare go compared to another stud I had out, then I decided that I still had plenty of space left so I stepped up the drill bit size and used the next sized extractor up.
It worked a treat :naughty
Hammered the extractor in as far as it would go and got the grips out
https://image.ibb.co/cRBquk/IMG_20160511_WA0006.jpg
https://image.ibb.co/ej7kS5/IMG_20160511_WA0008.jpg
New Stainless Bolt from Vauxhall
https://image.ibb.co/nFvuLQ/IMG_20160511_WA0012.jpg
Manifold back on with new gasket
https://image.ibb.co/iXvGZk/IMG_20160511_WA0019_1.jpg
Not been able to start it up yet as got to refit the radiator and put some more coolant in it first which |I hope to do tonight
You should have been a dentist lol, well done.:clap:clap
The right tool for the right Job, as Scotty once said in Star Trek lol.
I wonder if there is a moral to this story?
Had you used a nut splitter on the nuts, maybe the stud wouldn't have sheared, and all it would have cost is a new nut.
Just thinking aloud lol, you can't do it to every nut, but worth thinking about.
You should have been a dentist lol, well done.:clap:clap
The right tool for the right Job, as Scotty once said in Star Trek lol.
I wonder if there is a moral to this story?
Had you used a nut splitter on the nuts, maybe the stud wouldn't have sheared, and all it would have cost is a new nut.
Just thinking aloud lol, you can't do it to every nut, but worth thinking about.
The worst thing is Rustic, it was when I was re tightening them to fit the new gasket, I was so happy with myself for removing them all without snapping any and then I did that, my heart sank when I felt the ratchet give :(
It's a learning curve, improved my skill set and made my tool set better equipped in the process, who can say that was bad luck? These things come to test us, it's just important we pass the tests :thumbs
terranosaurusdoug
12-05-2016, 11:29
Nice one mate I'm genuinely impressed, I didn't think it would work it looked so well in there, I'm well chuffed for you :thumb2:thumb2:thumb2
Blocky10
12-05-2016, 15:54
Good job. Was it you who was going to buy left handed drill bits for this job?
Nice one mate I'm genuinely impressed, I didn't think it would work it looked so well in there, I'm well chuffed for you :thumb2:thumb2:thumb2
Thanks mate, I was relieved to say the least :bow
Good job. Was it you who was going to buy left handed drill bits for this job?
I did and it didn't remove the stud on it's own but was very sharp and didn't show any signs of snapping and I hope it loosened it somewhat, the stud did come out fairly easy :nenau
Blocky10
12-05-2016, 20:15
Thanks mate, I was relieved to say the least :bow
I did and it didn't remove the stud on it's own but was very sharp and didn't show any signs of snapping and I hope it loosened it somewhat, the stud did come out fairly easy :nenau
Where did you buy them? Sounds like they'd come in handy. :thumb2
Where did you buy them? Sounds like they'd come in handy. :thumb2
There you go mate;
Left Handed Cobalt Drill Bits - http://www.ebay.co.uk/itm/252303964795?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Stud Extractors - http://www.ebay.co.uk/itm/201536843116?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Blocky10
13-05-2016, 06:15
There you go mate;
Left Handed Cobalt Drill Bits - http://www.ebay.co.uk/itm/252303964795?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Stud Extractors - http://www.ebay.co.uk/itm/201536843116?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
Cheers Banshee. :thumbs
melissachels
13-05-2016, 20:01
love it!:thumbs
I've got loads of tap and dies but no stud extractors! :thumb2:D
they're on me watch list for pay day since my new jap toy almost skint me :eek: but not quite :naughty:naughty
love it!:thumbs
I've got loads of tap and dies but no stud extractors! :thumb2:D
they're on me watch list for pay day since my new jap toy almost skint me :eek: but not quite :naughty:naughty
How about a race Melissa?
My Cavalier SRi against your MR2?
Wonder whats the winner on paper?
136BHP from the Cav :nenau
melissachels
13-05-2016, 21:49
How about a race Melissa?
My Cavalier SRi against your MR2?
Wonder whats the winner on paper?
136BHP from the Cav :nenau
haven't had a chance for a good look round it either & never had a car like it.
Pfft no idea, I'm still figuring out exactly what one I've got....don't thing it's got power steering....[emoji123] [emoji123] [emoji123] [emoji123] [emoji123]
Sent from my HTC One M8s using Tapatalk
vBulletin® v3.8.11, Copyright ©2000-2024, vBulletin Solutions Inc.