Is JB Weld STRONG???
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Sorry to hear about your troubles,
I broke my Crank damper bolt once, it was an ARP hardened bolt, drilled it out with progressively larger bits until I could chip it out with a hammer and a punch,
I broke my Crank damper bolt once, it was an ARP hardened bolt, drilled it out with progressively larger bits until I could chip it out with a hammer and a punch,
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
Sounds like the extractor is too deep to even weld a nut onto it. If it broke off....it is in there solid. You could apply heat from a torch, but then you would probably fry the seal and too much heat could damage things farther.
Any way to get needle nose Vice-Grips onto it and turn while someone else uses a center punch on it to tap it around????
Any way to get needle nose Vice-Grips onto it and turn while someone else uses a center punch on it to tap it around????
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,933
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,933
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
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Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,933
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
Left hand drill bits arent really any different when it comes to quality (I have ahole box, and got it jobber price MSC), ie carbide and cobalt, but they havent done anything to get this bolt out. It was work hardened to much. I think I need to EDM it? I hear that is the real way to get a bolt out that cant be drilled, just blow it up!
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
Left hand drill bits arent really any different when it comes to quality (I have ahole box, and got it jobber price MSC), ie carbide and cobalt, but they havent done anything to get this bolt out. It was work hardened to much. I think I need to EDM it? I hear that is the real way to get a bolt out that cant be drilled, just blow it up!
I used a centerdrill, .312" or .250",,,,,,,, try and see if you can get a center drill on it, the tips are small and you can buy long center drills from MSC,,,
then try and use a drill to start on the center drill spot
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,933
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
I just got two of these in 4 inch lengths, made of carbide. Today is a busy day, so tommorow I will try. I like these, because if you bust one end, you can use the other.
Racer
Joined: Mar 2003
Posts: 346
Likes: 33
From: OKC OK
EDM is a little more friendly than blowing it up, but close. This usually works for me though, once I've spilled a little blood whatever is causing a problem seems happy & stops fighting me. The center drills "should" get thru the work hardened area on the bolt, if they fail, a good rotary file is the next step. Try to use any light lubricating oil to keep the heat down while drilling, if you can get a "cutting fluid" they work better than say WD 40.
Race Director
Joined: Feb 1999
Posts: 12,772
Likes: 17
From: Indianapolis IN
You may want to order a couple that are not carbide, (High Speed Steel) just don't wobble the tip or it can snap.
I agree with metal tech, use 100-150 rpm or so if you can and keep thick oil it, blow it out with air, do it again etc....
I agree with metal tech, use 100-150 rpm or so if you can and keep thick oil it, blow it out with air, do it again etc....
Burning Brakes
Joined: Jun 2005
Posts: 1,191
Likes: 15
From: Wallingford Vermont
There's some special welding rod that is super high tensile and uses a flux coating to protect the bolt hole/threads. At work we have a kit specially made (welding rod) for removing broken bolts. I haven't had an oppurtunity to try it, yet.
Here's a link to the Hobart Welding board were they talk about this method: http://www.hobartwelders.com/weldtal...ad.php?t=14860
Maybe you should ask local welder or welding supplier...
Here's a link to the Hobart Welding board were they talk about this method: http://www.hobartwelders.com/weldtal...ad.php?t=14860
Maybe you should ask local welder or welding supplier...
Last edited by DanZ51; Jun 15, 2008 at 10:15 PM.
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,933
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
There's some special welding rod that is super high tensile and uses a flux coating to protect the bolt hole/threads. At work we have a kit specially made (welding rod) for removing broken bolts. I haven't had an oppurtunity to try it, yet.
Here's a link to the Hobart Welding board were they talk about this method: http://www.hobartwelders.com/weldtal...ad.php?t=14860
Maybe you should ask local welder or welding supplier...
Here's a link to the Hobart Welding board were they talk about this method: http://www.hobartwelders.com/weldtal...ad.php?t=14860
Maybe you should ask local welder or welding supplier...
Last edited by steve40th; Jun 16, 2008 at 12:45 AM.
Thread Starter
Le Mans Master
Joined: Feb 1999
Posts: 9,933
Likes: 38
From: South Carolina
St. Jude Donor '03 & '05
I know, but I have gotten two extractors out of this mess with the special bits from work. This bit is in about a 1/4 to 3/8 of an inch. If I can drill into it with the starter carbide solid bit, and get an extractor into it, maybe I can jerk it out over time. I am trying guys, to avoid the machine shop, really trying.
