Help with broken bolt please

[xexitenglishx]

Well it was my bright idea to try to try to replace my thermostat to fix an overheating problem. I got both bolts out and as i was tightening the lower bolt it snapped off flush with the lower intake. How can i go about getting this bolt out. I cant get straight access to the bolt to drill it out i dont think? Do i have to get the upper and lower intake removed and have the bolt drilled out? Is there any other way?
Thanks

 

[83Mustang427TT]

If its flush you have to be able to get a dril straight inline with the bolt to use an easy-out if there is a nub sticking out take a hacksaw blade and try cutting a slot in to top of the bolt and using a screw driver to unscrew it

 

[rd]

Unless you have access to tap it in the removal directon, with a small chisel, you pretty much have to remove the intake to get to it. If you have access to a good specialty welder, you can get a short bolt or nut or extension welded on the end and turn it out, but that's a long shot.

If you can get a drill on the bolt at all, try a left hand drill bit. Sometimes the effect of turning that direction with the heat will free them without having to drill a hole perfectly in the center.

Real long shot would be taking a Dremel or similar tool with a cutting wheel and trying to put a slot in it.

Been there, done this. A 20 minute thermostat change on my Bronco turned into an 8 hour nightmare, when I broke 2 more bolts on the intake removing it.......

And then found a corroded spot between the rear water passage and the bolt hole......

This escapade lead to me giving up old outboard motors also. If they had 3 bolts, 2 broke every time I touched them.

 

[xexitenglishx]

Im going to try cutting a groove in the bolt. I didnt think of that and i can cut a small groove in the tstat cover too right? If it isnt deep then i can get a screwdriver bit in there. Would taht be a good way to go about it?

 

[RaceDvr50]

Have you ever seen or used a 90 degree drill. That should get you your angle if you want to drill it and ez out it. I would suggest a left hand bit if you can find one, the bolt might just spin out once you start drilling it then.

 

[795.0pacecar]

You can rent angle drills. I had a head bolt break off in the block and had to drill and helicoil the hole. Dont use an EZ-out. My head bolt ordeal would have only taken an hour instead of 2 days. The EZ-out snapped off in the bolt, so I had to use a die grinder to grind it and most of the bolt out.

 

[SPEEDYLIFSAVR]

Im going to try cutting a groove in the bolt. I didnt think of that and i can cut a small groove in the tstat cover too right? If it isnt deep then i can get a screwdriver bit in there. Would taht be a good way to go about it?

I think like others mentioned the 90* drill would be a good bet . You can do the method you mentioned and even if you damage the thermostat housing it is not an expensive replacement .

Good Luck!

 

[billison]

yeah same here, broke a bolt in the therm, and one of the water pump/timeing chain cover bolts, answer me this WHAT IS A EASY OUT?

 

[RaceDvr50]

yeah same here, broke a bolt in the therm, and one of the water pump/timeing chain cover bolts, answer me this WHAT IS A EASY OUT?

It's a tool, you drill out the center of the bolt and then depending on the type of easy out you twist it in (left hand thread) or tap it in with a hammer then turn out the remains of the bolt.

 

[xexitenglishx]

Easy out is a dill bit that reverses the bolt to it can unscrew it. I plan on buying a 90* drill attachment and a bolt remover like this. Tell me if its the right kind i should use. http://www.sears.com/sr/javasr/prod...Bolt-Out,+Taps+&+Dies&vertical=TOOL&ihtoken=1