Hi there. i got a blue 202 with a 161 head on it. I was trying to take the square headed bolt out whr the temp switch goes in near the back of the head on carby side to put a temp switch in which i didnt have. That is the only place on a 161 head u can put a temp switch. I snapped the bolt. I drilled a small hole to use a easy out but now iv snapped that too. Any ideas on wot else i can do. It now leaks water from there.
Maybe drill it out again, start small and work ur way up, then when it's big enuf, retap it. That would work I rekon. Or weld sumfin on the top of the bolt which u can use to undo it, maybe a socket. Then while it's still glowing red, try and undo it then.
if you heat it up red hot then mig it up it will seal, if you want to try again use a carbide burr on a die grinder to drill out the tap or easy out.
If you want to put the sensor in your best be will be to call a thread repair guy to put a brass insert in it.
easy-out snapped inside = forget about drilling it. itll just eat every drillbit you touch it with.
you could try a plumbers wrench. always worked well for me in the past.
ever since the day he was born, fluffy knew that he was not like all the other 454's. "GO AWAY and play in your silverado C3500" they would all say to him, laughing and snickering as he slowly loped away in his truck with his lowly 530NM of torque. but one day, one day, Fluffy knew he would grow up to power a 66 impala, and would be the talk of all the other 454's.
Drilling with a normal drill bit yes, doing up my backhoe I have had to weld up drill and retap heaps of threads, so far snapped 6 taps and 2 easy outs (not so easy).
If the end of the broken drill/tap/easy out is at the end of the hole you can sit a washer over it and mig the centre of the washer tot he bit, then weld a nut to the washer and then remove the stuck bit.
Else a rounded toped carbide burr will eat an easy out, tap etc for breakfast
Else you can try cracking it with a centre punch, cold chisel etc and chip it out.
Else you can heat the bit up and it will drill out easier also.