Alt bolt broke off in block.. ideas to get it out?

shavedaccord · Feb 17, 2009

Alt bolt snapped yesterday while I was driving. It seems to be seized into the mounting block. I've tried pretty much everything but heat to get it. Broke a million drill bits trying to drill it for a bolt extractor, even broke the extractor. So I'm open to ideas. Picture below.

Dinzdale40 · Feb 17, 2009

weld a nut to the end....turn it out....your a welder

mraw112 · Feb 17, 2009

It looks like its sticking out alittle. If so you could try welding something on it and rotating it. I broke an oil pan bolt in my block over the summer and it was not fun. The whole bolt was stuck in there. I had to get a die grinder and grind the whole bolt out, then drill a over sized hole, the tap it. If you cant get it out use a dremel with aluminum oxide cone. those screw extractors are crap.

HondaLuver83 · Feb 17, 2009

holy crap man. I guess we shud start using anti seize on our bolts. I would just try what everyone above me recommended. I had this happen to me on a bolt, but it was on my exhaust flange. I just hammered it out and re tapped it. But don't do that lol...

mraw112 · Feb 17, 2009

Im interested in how it broke off just from driving?

shavedaccord · Feb 18, 2009

mraw112 said:
Im interested in how it broke off just from driving?

If I knew I would tell you. But I kid you not I was driving down the road heard a huge bang then all my lights came on. Got home the bolt was snapped off in the block and the mounting bracket was cracked.

Dinzdale40 said:
weld a nut to the end....turn it out....your a welder

Been pondering the idea, just it's so close to the aluminum it worries me. The wire touches the aluminum say bye bye.

DrocCa89 · Feb 18, 2009

get a punch, and a left handed drill bit. it should come out easily with no harm done

shavedaccord · Feb 21, 2009

DrocCa89 said:
get a punch, and a left handed drill bit. it should come out easily with no harm done

Big negative on that one. Already tried it.

HondaLuver83 · Feb 22, 2009

I was gonna say find a shop with a manual cole drill to remove broken studs and bolts from engine blocks. But I dont see how u could angle one in there. Its pretty tight.

Why don't you try going to a metals shop to see if they have anything? Obviously you can't drive your car, so that's kind of a bust...But you can always get advice.

If your block wasnt aluminum I would say heat it up with a torch, allow the bolt to expand, then drill it out while its nice and hot. But since it's so close, I dunno bro.