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Jun 13, 2006 11:45:30 GMT
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how do they work then?
Trying to remove a steering column from the GTE, and it's got a shear-off bolt in it. i've hacksawed a slot into the top to try and screw it out but it's too tight. i've been told i need to drill it and use a stud extractor but i don't see how that'd work....? do i drill all the way through the bolt?
help!
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Never trust a man Who names himself Trevor. Or one day you might find He's not a real drug dealer.
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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Stud extractor?slater
@slater
Club Retro Rides Member 78
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Jun 13, 2006 12:01:12 GMT
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If you can get to it to drill a hole for a stud extractor then you may aswell drill out the whole bolt. Its much easyer. Stud extractors tend the have a habit of breaking and if that happens you will never get it undone.
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Jun 13, 2006 12:13:29 GMT
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I agree with slater - if you can get to it drill the whole bolt out......I've had many bad experiences of sheered extractors in cylider heads
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I like long walks, especially when they're taken by people I don't like.
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Jun 13, 2006 12:14:08 GMT
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righty-oh I'll just attack it with a drill then
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Never trust a man Who names himself Trevor. Or one day you might find He's not a real drug dealer.
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Jun 13, 2006 12:32:43 GMT
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I must have a different definition of stud extractor - my local tool shop sold me something like a socket with a small hole that the stud fits into. With a ratchet handle it winds studs in and out a treat. I believe there are 3 odd-shaped very cleverly designed cams inside... one of those would do sheared steering column bolts.
Graham
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Jun 13, 2006 12:34:50 GMT
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you may be able to turn the bolt usin a hammer and chisel or dot punch.
Paul
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Jun 13, 2006 12:39:21 GMT
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Most stud extractors break because people use one to small for the job. Drill out the bolt almost all the way out, then use the largest extractor that will fit,that way you save the threads on whatever the bolt is in. I got the shear bolts out of a fiat 127 column using a punch and hammer though.
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slater
Club Retro Rides Member
Posts: 6,390
Club RR Member Number: 78
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Stud extractor?slater
@slater
Club Retro Rides Member 78
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Jun 13, 2006 15:58:20 GMT
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I must have a different definition of stud extractor - my local tool shop sold me something like a socket with a small hole that the stud fits into. With a ratchet handle it winds studs in and out a treat. I believe there are 3 odd-shaped very cleverly designed cams inside... one of those would do sheared steering column bolts. Graham We mean stud extractors for broken studs, aka Eazy-outs etc.
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Jun 13, 2006 17:17:31 GMT
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Most stud extractors break because people use one to small for the job. Drill out the bolt almost all the way out, then use the largest extractor that will fit,that way you save the threads on whatever the bolt is in. I got the shear bolts out of a fiat 127 column using a punch and hammer though. Problem is if you make the hole too big, when you tighten them up it tightens the remains in the threads and you can snap them this way as well. If possible I never use these as they are a bit of a curse word to remove if they do snap. In a lot of cases I weld a piece of steel at 90 degrees to the thread and tap it with a hammer to shock it loose then unscrew from there. You have to be pretty accurate with the welder to do it this way though and M5 is normally the smallest I will go to this way and that is only in certain circumstances.
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Jun 13, 2006 17:21:39 GMT
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Easy outs....... bit like "Military intelligence" that one Povo spec way of doing it....... Drill down the centre as large as you can, then Hammer a Good Torx bit into the hole ;D Wind it out a treat The proper way is to buy the snap on sud extractor set...... Cobalt drills, splined shafts, splined collars to turn, drill guides etc Works a treat and if you are ever in a situation where you need it..... worth its weight in Gold Expensive but not compared to the agro of trying other methods or worse still having them fail and break off..... Then its head off time (Or whatever you have sheared) and find a local Spark eroder Manifold studs on an Ascona <fx>shudder<fx> were all it took for me to be sold on the kit HTH Dom
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Jun 13, 2006 20:40:00 GMT
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Have u tried using an old screwdriver and putting a pair of mole grips on the handle for a lovely bit of leverage? :-)
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Stud extractor?BenzBoy
@benzboy
Club Retro Rides Member 7
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I feel your pain. My V8 heads still have half the studs still in the holes. And of course, they shear off about 3mm into the head so you can't get grips on them or a Mig handset near them. I don't like the idea of stud extractors - if the hardened bit snaps it's pretty much impossible to drill them out then. I've more or less decided to drill the fuggers out and helicoil the head. Trouble with that is, if you go too far with the drill and hit a water gallery the heads FUBAR'd
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mercmad
Posted a lot
Flush Hard,it's a long way to McDonalds.
Posts: 1,740
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Jun 14, 2006 12:58:32 GMT
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I feel your pain. My V8 heads still have half the studs still in the holes. And of course, they shear off about 3mm into the head so you can't get grips on them or a Mig handset near them. I don't like the idea of stud extractors - if the hardened bit snaps it's pretty much impossible to drill them out then. I've more or less decided to drill the fuggers out and helicoil the head. Trouble with that is, if you go too far with the drill and hit a water gallery the heads FUBAR'd Funny I should have the same problem with a spare engine I have here,well not the effing funny actually as I was in the middle of doing a deal with a guy to sell him the 3.5 heads,( they are impossible to find now) and studs have become jammed in the heads because they are steel ands the heads are alloy and the electrolytic corrosion between the two has seized them solid. The later head bolts are nickel plated to prevent this. Did you know that the later 117 963 version is almost the same engine design? ,bigger valves and ports on the 5.0 liter but one too many studs on each cylinder....unless you got brave and drilled a new hole in the block.and a lot bits like intakes and exhusts interchange,I've even swapped a 1972 water pump onto an alloy block 1989 motor...same part.
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Many years ago I changed my driving style to cope with rising fuel prices; I have now reached the stage where I am contemplating keeping my eyes shut in order to lower wind resistance.
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Stud extractor?BenzBoy
@benzboy
Club Retro Rides Member 7
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Jun 14, 2006 16:14:05 GMT
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Hmm, interesting Mercmad. Getting the studs out of the heads is one of the many joys that await me once i get the engine unpacked from its various crates (one day : I passed up a M117 5.0 engine for £70 some time ago. B*gger.
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