 How do I remove broken studs? |
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| FlatSix |
  Mar 25 2006, 02:24 PM
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#1
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English Member  Group: Members Posts: 191 Joined: 14-January 03 From: Poole, England Member No.: 144  |
I've recently purchased a 1.7 engine. Today I tried to attach the engine mount bar but found BOTH holes filled up with a broken off stud!!! (IMG:http://www.914world.com/bbs2/html/emoticons/ohmy.gif)
How can I remove the old bolts? Attached image(s) 
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Replies(1 - 7)
| Joe Bob |
Mar 25 2006, 02:27 PM
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#2
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
You either drill them out....have them drilled by someone or try EDM. Electro Deposition....high intensity electricity that burns them out.
In the US there are onsite services that come to you. Don't know about "over there"....good luck. |
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| Aaron Cox |
Mar 25 2006, 02:28 PM
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#3
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Professional Lawn Dart Group: Retired Admin Posts: 24,541 Joined: 1-February 03 From: OC Member No.: 219 Region Association: Southern California |
drill a pilot hole....
then you can use an EZ out..... or... get a left handed drill bit and try that.... if it sucks.... drill it out and helicoil it.... |
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| FlatSix |
Mar 25 2006, 03:25 PM
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#4
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English Member Group: Members Posts: 191 Joined: 14-January 03 From: Poole, England Member No.: 144 |
Thanks for those suggestions. I think I'll try to obtain some left handed drill bits and see where that takes me.
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| KELTY360 |
Mar 25 2006, 04:03 PM
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#5
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914 Neferati Group: Members Posts: 5,031 Joined: 31-December 05 From: Pt. Townsend, WA Member No.: 5,344 Region Association: Pacific Northwest 
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Patience is the key using EZ outs. It is very important to locate your pilot in the CENTER of the stud. Start with a center punch to mark your target. A series of 2 or 3 pilot holes increasing in diameter is safer than just drilling one at the final size. Once you've got the desired size for the EZ out, carefully twist it into the hole until the stud moves. Do not put too much force on it because if it breaks it's almost impossible to drill out. If the stud doesn't move try drilling a larger hole and using a larger EZ out. If you've been careful to center your pilot hole you may ultimately drill out the stud almost to the threads when it becomes easy to remove. Go slow and good luck.
Marc |
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| Trekkor |
Mar 25 2006, 04:10 PM
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#6
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
You might try welding a nut onto the broken stud.
Hold it over the center, plug weld it on. The heat of the welding might help loosen the stud. Be careful. (IMG:http://www.914world.com/bbs2/html/emoticons/welder.gif) KT |
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| Trekkor |
Mar 25 2006, 04:13 PM
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#7
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I do things... Group: Members Posts: 7,809 Joined: 2-December 03 From: Napa, Ca Member No.: 1,413 Region Association: Northern California |
The heat from welding will melt any Loctite that may have been used, too.
KT |
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| Joe Bob |
Mar 25 2006, 04:17 PM
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#8
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Retired admin, banned a few times Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None |
What pisses me off about studs, especially M8 exhaust ones....you NEVER know when it's just a tight nut or the stud is gonna give up the ghost immediately......now I just assume it's gonna bust and hit it with PB Blaster before I tackle much of anything anymore.
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