NOT GOOD! oh no, oh no, oh no...WOOPS!

[AllanD]

The first secret of EZ-outs is that their recomendation on drill bits is way too small...

so only the "tip" of the Extractor gets ingaged in the drilled hole.

Frankly I have several sets of them that I've shortened with a grinder.

but my sucesses with EZ-outs are few and far between.

I consider drilling the broken bolt the likliest outcome.

And I don't touch the bottoming tap until I've had either a taper ot plug tap bottomed in the hole.

Running into a buggered thread with a bottoming tap often results in
a jammed tap and a jammed tap all too often degenerates into a broken
tap which is far worse than the broken bolt in the first place.

Frankly I'm "Wild Bill Hickok" when it comes to reaching for my Heli-Coil taps.

I'll be honest, most of the holes I look at I'm looking for an excuse.


AD

 

[pyrosity]

Well if i can get this one tapped it will be what i do...but if not im gonna do some welding....

Who knows though..im gonna go into town and see if i can find a diamond cobalt bit or whatever there called and see if that scratches it....I REALLY WANT THE EXTRCTOR OUT so i can heli-coil it...but who knows...one more day of my patience...

 

[Dweano]

The first secret of EZ-outs is that their recomendation on drill bits is way too small...

so only the "tip" of the Extractor gets ingaged in the drilled hole.

Frankly I have several sets of them that I've shortened with a grinder.

but my sucesses with EZ-outs are few and far between.

I consider drilling the broken bolt the likliest outcome.

And I don't touch the bottoming tap until I've had either a taper ot plug tap bottomed in the hole.

Running into a buggered thread with a bottoming tap often results in
a jammed tap and a jammed tap all too often degenerates into a broken
tap which is far worse than the broken bolt in the first place.

Frankly I'm "Wild Bill Hickok" when it comes to reaching for my Heli-Coil taps.

I'll be honest, most of the holes I look at I'm looking for an excuse.


AD

Yup, as prolly everyone's heard because i complain about it as much as i can haha...i broke a bolt off in my cylinder head, drilled it out, no biggy. Then snapped off a snap on brand tap in my cylinder head....noting touches that! Trust me..i've tried everything! I dunno what to say man, just that im in your same frustrated state

 

[Mac]

They actually make a tool set to chase theads, same as a tap but a much looser fit. Does not cut new threads but cleans up the existing ones. Bought my at a local discount store, maybe Harbor Freight would handle them.
Dave

 

[GoodOld85BlueBalls]

Forget trying to drill the easy-out out, It just ain't going to happen. Not even with a diamond tip bit. $$$$$$$$
Im my industry we use an EDM (electric discharge machining) Tool for removing broken taps. This has an electrode sticking out of it that eats its way down through hardened metal using high frequency electricity - also known as 'spark erosion' to remove the tap. We have one because tooling companies break taps off in our engines all the time. But don't know if you could find one locally. But I would consider that a final resort.

I think you should try some left handed bits a few sizes biger than the hole you curently have. Possibly the bolt will turn itself out that way. I have always used left hand bits and will never use a easy-out anymore now that I have discoverd them.

Another thing I have done in the past is use a plasma cutter and hit the hole with shot bursts from the cutter and it will blast the easy-out away.

On a final note I have been very successful removing boken easy outs by drilling down the sides of the easy out with small bits and increasing the size till it came out.

If you have access to a welder you can weld a bolt on top of the broken out one and turn it out, I have also welded a nut on top of a broken out bolt before by welding through the inside of the nut to the broken off bolt.

I am the king of broken off bolts and think I could possibly beat out Allan on this one. But I know he has no equal when it comes to helicoils.

Best bet is to do whatever you can not to break them off in the first place.

I wish you luck.

Mike.

 

[Dweano]

I am the king of broken off bolts
Mike.

Adopt me please

 

[pyrosity]

LOL...you guys are awesome...lol....yah i basically made it worse off so my stud idea has come into play...Basically i took a diamond grinder bit to it...actually about 8 of them...lol...
and now there is a big hole with some of the extractor still there.....

IM DONE SCREWING WITH IT...So know that theres an indent ive decided that since its just a bolt that goes through my water pump that ill wory about it later and just weld a stud there for now...

SO HOPEFULLY ALL WORKS ACCORDINGLY and i can slap my new Christmas present(Edelbrock 4BBL Intake) on there and get this thing running...

But fingers crossed...see what happens

 

[Dweano]

Fingers crossed man! Today I burnt out the tap! Woot! Good things do happen haha

 

[BeefStew42791]

REALLY?

yes. really really, check my wonderfully enlightening experience along these same lines: http://therangerstation.com/forums/showthread.php?t=47773&page=3

the trick is patience, LOTS of it, go slow and with the TINIEST bit of pressure, and come off it quite often to let it cool.

Forget trying to drill the easy-out out, It just ain't going to happen. Not even with a diamond tip bit. $$$$$$$$
Im my industry we use an EDM (electric discharge machining) Tool for removing broken taps. This has an electrode sticking out of it that eats its way down through hardened metal using high frequency electricity - also known as 'spark erosion' to remove the tap. We have one because tooling companies break taps off in our engines all the time. But don't know if you could find one locally. But I would consider that a final resort.

And I also invite you to look at the same page. EDM's, while very good at what they do, aren't the absolute necessary and single answer to drilling through hardened carbide..especially in an older truck. There happens to be no harder material then diamonds I didn't even use diamond carbide bits, I just had basic diamond coated steel bits and I went through an ezout in my exhaust manifold to head bolt flange holes.