Rounded Torx Bolt - How to get it out!

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It may be that the mechanic fitted the blanking plate to the pipe rather than the manifold because he couldn't get the bolts out of the manifold either. When I fitted my EGR blank just before Christmas this happened to me. I flooded everything with WD 40 every day for a week and then changed the fan belt. This was the crucial element because while the fan and belt were out of the way I could really do some hammering. I sacrificed an oversized hex key by grinding a bit of a taper on it and hammering it into the socket screws. That got me enough traction to shift them. Yes, there is an Irwin bolt grip that fits on them, but in my case it just scraped a few flakes of metal off the outside and didn't actually move the bolts.
 
Theres not enough space to drill out unless you remove the rad, intercooler and front grill. Also barely enough space to get a decent swing on a hammer.

True but if I hadn't of noticed the issue and carried on it could have blown the pipe off, hit the fan, broken that and possibly damaged the rad as well. All for not blanking in the correct place.
 
Theres not enough space to drill out unless you remove the rad, intercooler and front grill. Also barely enough space to get a decent swing on a hammer.

True but if I hadn't of noticed the issue and carried on it could have blown the pipe off, hit the fan, broken that and possibly damaged the rad as well. All for not blanking in the correct place.

depends on your drill ,and length of punch ,i have done a few on vehicle
 
my idea is to use a pad saw,cut a slot in the bolt head then use a big screwdriver with a spanner grip on it and undo it that way.hopefully.
I used this method on such a bolt on a ford Focus last month. Used a hacksaw blade, cut across the face and turned it with a screwdriver. I wonder if the superglue would work if the space was tight.
 
I used this method on such a bolt on a ford Focus last month. Used a hacksaw blade, cut across the face and turned it with a screwdriver. I wonder if the superglue would work if the space was tight.

i have used it a few times before,but this bolt is a tight bugger.my other thought was to drill a hole through the bolt head and insert a pin through it as a lever or to be able to hit it with a hammer???
 
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