Broken bolt in the engine
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Disabled USMC Veteran
Joined: Jan 2011
Posts: 637
Likes: 2
From: Pilot Point, TX
well, i pulled off the bracket with the broken bolt and it turned out that when i drilled the bolt from the back side, it spun right out! guess i got lucky! thanks for all the help guys!!!!!!!
Posting Guru
Joined: Dec 2006
Posts: 1,389
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From: Massachusetts
Basically, There several different types and brands. Depends on how much room you have on the piece that has the broken bolt. Distance to a water jacket etc. The Helicoil brand isn't bad and will do what most people want. They would work fine in this situation. They are inserts for high torque applications. I was in town getting some endmill bits today and saw some today that are supposed to be some bad dudes. These were expensive though.
Now, I am not a machinist. Yeh, I have a lathe,surface grinder and a milling machine. Old stuff picked up at auctions. My lathe is a 1937 model Lablond. My surface grinder is a 1942 model Brown and Sharp. There are tired but I have fun with them and don't have a 1000 dollars in them both.
Now, I am not a machinist. Yeh, I have a lathe,surface grinder and a milling machine. Old stuff picked up at auctions. My lathe is a 1937 model Lablond. My surface grinder is a 1942 model Brown and Sharp. There are tired but I have fun with them and don't have a 1000 dollars in them both.
Sounds like a VERY cool collection in your workshop!! I LOVE antiques, and seeing them work and still used is even cooler!
Postmaster
Joined: Mar 2008
Posts: 3,255
Likes: 0
From: Sweet Home, OR
If the bracket is CAST IRON you can basically blow it out with a cutting torch since the torch can't cut cast iron.
Heat the bolt up just to the point that it gets dull red and "blow" it out with the oxygen stream. You can raise the heat to a little at a time if the dull red color isn't enough.
I would blow most of it out and then clean the rest out with a tap and or pick.
There is definitely a technique to this but it works.
Heat the bolt up just to the point that it gets dull red and "blow" it out with the oxygen stream. You can raise the heat to a little at a time if the dull red color isn't enough.
I would blow most of it out and then clean the rest out with a tap and or pick.
There is definitely a technique to this but it works.
Posting Guru
Joined: Mar 2005
Posts: 1,701
Likes: 0
From: KY
I didn't even know there were different brands! I just thought Heli-coil was the name of a thread insert, didn't realize it was a company name. I guess I'm a....
Sounds like a VERY cool collection in your workshop!! I LOVE antiques, and seeing them work and still used is even cooler! _
Sounds like a VERY cool collection in your workshop!! I LOVE antiques, and seeing them work and still used is even cooler! _
I like those old tools. I am not great at using them like a machinist is. You can get them pretty cheap at auctions. They are 3 phase so most people don't want to fool with them and they are heavy to move. Allot of times the moving expenses will be higher then the machines but I have paid for them several times over.
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