Removing Rounded Torx Bolt

[Chriss]

Hi!

I'm trying to change the brake discs on my car, and typically one of the torx bolts has rounded.

This bolt is hidden by the disc, the 'wrong' side, so access is extremely limited, as in, I can't even get an impact driver to it.

Short of just blowing the fucking car up and claiming on the insurance, how can I fix it?
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TheShaggyDA: I've got 3 or 4 pairs that predate my wife, so at least 11.5 years old.

[Gunny]

Whats the bolt holding on?The disc?Or the caliper.
Any chance of a photo
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WWW.SCOTTISHBIKERS.CO.UK

[T1z3R]

cut a slot in it for a plain screwdriver bit?
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duck my sick!

[Chriss]

The caliper carrier. It's what's stopping the disc from coming out.

I don't think there enough room for any cutting equipment.

No photo, too bright outside, and too dark inside. You just get a load of black on white.
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TheShaggyDA: I've got 3 or 4 pairs that predate my wife, so at least 11.5 years old.

[Chriss]

Got a photo.

It's the blur on the bottom.

https://farm4.static.flickr.com/3499/3810590365_2732ee02a3.jpg

Hopefully it kinda shows that I'm limited for room.
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TheShaggyDA: I've got 3 or 4 pairs that predate my wife, so at least 11.5 years old.

[Ste]

use a dremel to cut a slot in it then use a screwdriver.

[extreme3d]

In addition to the advice above regarding cutting a slot, might be worth spraying some plus-gas onto the bolt in an effort to counter what caused to to seize in the first place.

A trick that can work sometimes is to tighten the bolt a fraction before unscrewing. This can help to break the bond.

[arry]

[Xenocide]

Go and get some proper bolts from your local bolt factor before you put them back on!
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KTM LC4 400 | Honda VTR1000

[Pete.]

You'll never turn that with a screwdriver. Wiggling the carrier up and down to help break the bond is a good idea though.
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a.k.a 'Geri'

132.9mph off and walked away. Gear is good, gear is good, gear is very very good

[Xenocide]

You could always try smashing a socket over the top of it (a small one) and twisting it off.
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KTM LC4 400 | Honda VTR1000

[Gunny]

If there was room to swing a hammer and either try to smash a socket over the top or hammer in the next size up bit.

Had something similar and we air chiseled the head of the bolt
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WWW.SCOTTISHBIKERS.CO.UK

[tshort2007]

that bolt will have loads of loctite on it. heat it up good and proper with a blowtoarch, (keep the caliper out the way!)

[Stalk]

From what I can see in the picture..

Cut the head off the bolt with an anglegrinder, withdeaw the disk and caliper carrier together, put what is left of bolt in vise and unscrew carrier. Get genuine replacement bolts, they are important.

Hope that this helps,
Cheers
Stalk

[arry]

[tshort2007]

Did my brakes on my vectra couple weeks ago. Het the bolts (top and bottom) up from the front end as much as you dare. Tap the bolts a couple times with a hammer, this will cook the loctite and make it brittle. Undo the good bolt, then do as Arry suggested, and move the carrier to unscrew the damaged bolt a little to break the seal. if you still cant undo the bolt, i suggest drilling and tapping a hole carefully in the front end of the bolt at least 15mm deep, then screw in a hex head stainless bolt and tighten. this will eventualy bite, then unscrew the main bolt!

[Chriss]

Bolts off, Babykat from here came round and fixed it (what a hero!)

Hitting the carrier and wiggling it broke the seal, which freed it up. He then unscrewed it by hand.
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TheShaggyDA: I've got 3 or 4 pairs that predate my wife, so at least 11.5 years old.

[Finglonga]