broken extractor in iron head
broken extractor in iron head any tips for getting a broken extractor piece out of my iron lt1 heads? this **** is impossible to drill out. it broke off in where the header bolts up on cylinder 8
You are gunna have to take it to a machine shop and have them EDM it out.
"Electric discharge machining (EDM), sometimes colloquially also referred to as spark machining, spark eroding, burning, die sinking or wire erosion,[1] is a manufacturing process whereby a desired shape is obtained using electrical discharges (sparks). Material is removed from the workpiece by a series of rapidly recurring current discharges between two electrodes, separated by a dielectric liquid and subject to an electric voltage."
"Electric discharge machining (EDM), sometimes colloquially also referred to as spark machining, spark eroding, burning, die sinking or wire erosion,[1] is a manufacturing process whereby a desired shape is obtained using electrical discharges (sparks). Material is removed from the workpiece by a series of rapidly recurring current discharges between two electrodes, separated by a dielectric liquid and subject to an electric voltage."
Use a Blue Wrench...aka a torch. That is the quickest and easiest way to get it done. Just ask the diesel crowd about it. Blast it out, then clean up the threads after you are done. Ready for a new bolt.
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Joined: Apr 2010
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That might weld the head material to the extractor. by grounding through it. Ive seen it work on normal bolts though. Try that, then blow the bolt/ extractor out of the hole with the "blue wrench" .
I am not sure that you can weld cast iron to that grade of steel or the steel bolt/nut with just a regular 6011 rod.
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You can Silicon Bronze weld to cast iron with a little pre-heating. I wouldn't rely on the strength of it though.
The best way to get the extractor out and possibly even the only way is to get it EDM'ed out or to properly use a Carbide bit. Carbide bits will chew through just about anything. The key to carbide is to keep it cool and spin it fast as you can. A 1/4" bit requires about 7,000rpm to cut and not chip the cutter itself. I find that chucking up a 1/4" carbide bit into my 90 degree die grinder will get you hole in just about anything.
You can Silicon Bronze weld to cast iron with a little pre-heating. I wouldn't rely on the strength of it though.
The best way to get the extractor out and possibly even the only way is to get it EDM'ed out or to properly use a Carbide bit. Carbide bits will chew through just about anything. The key to carbide is to keep it cool and spin it fast as you can. A 1/4" bit requires about 7,000rpm to cut and not chip the cutter itself. I find that chucking up a 1/4" carbide bit into my 90 degree die grinder will get you hole in just about anything.
