Stripped bolts

[pboling]

been trying to replace my brake pad and rotors for 2 weeks but i haven't been able to get this stripped bracket bolt off. before you ask i have used over a can of wd40, used heat, vibrated and tried to twist it out with vice grips and now tried these screw extractors and it hasn't moved a mm. any tips? i will take any advice.

 

[MelsRegal]

If you were in a shop I would say tack weld a bolt onto the head of the stripped bolt.

 

[2007LucerneCXL]

Air chisel on the outside of the bolt head to try to unscrew it, cut off the head and drill it out get new bracket, 6pt air socket very snug fit and drive it on outside of the bolt, blue flame bolt remover. Depending on tools and how much damage you are willing to accept.

 

[pboling]

Air chisel on the outside of the bolt head to try to unscrew it, cut off the head and drill it out get new bracket, 6pt air socket very snug fit and drive it on outside of the bolt, blue flame bolt remover. Depending on tools and how much damage you are willing to accept.

i plan on replacing both the calipers and brackets. what do you mean by cutting of the head and drilling it out? drilling out the stud with a drill bit? i have extra bracket bolts to replace this one with so i'm not worried about damaging anything

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[Alan 55]

i plan on replacing both the calipers and brackets. what do you mean by cutting of the head and drilling it out? drilling out the stud with a drill bit? i have extra bracket bolts to replace this one with so i'm not worried about damaging anything

If you decide to drill out the stud with a drill bit, the number 1 issue is to be dead center of the bolt. Take your time to start with a very flat surface by grinding away the existing head of the bolt. Use extra caution in placing a center punch mark dead center of the bolt. Start with a small bit and gradually increase size until you can use a screw extractor. There are probably several YouTube videos on this topic.

 

[2007LucerneCXL]

Cutting off the head is less material to drill through on the bolt, but not required.

 

[pboling]

If you decide to drill out the stud with a drill bit, the number 1 issue is to be dead center of the bolt. Take your time to start with a very flat surface by grinding away the existing head of the bolt. Use extra caution in placing a center punch mark dead center of the bolt. Start with a small bit and gradually increase size until you can use a screw extractor. There are probably several YouTube videos on this topic.

thank you for the info. when i'm drilling out the bolt how much material should I take off or should it just pop out as I increase the size?

 

[Alan 55]

I would start with a 1/8 drill bit and go to 3/16. The goal is to drill to one half of the bolt diameter. For example, 1/2 inch bolt, drill 1/4 maximum then use a properly sized screw extractor. The screw extractor is also known as an easy-out but it is not always easy so I recommend viewing several YouTube videos on this topic. Unfortunately the bolt will not just pop out.

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[pboling]

I would start with a 1/8 drill bit and go to 3/16. The goal is to drill to one half of the bolt diameter. For example, 1/2 inch bolt, drill 1/4 maximum then use a properly sized screw extractor. The screw extractor is also known as an easy-out but it is not always easy so I recommend viewing several YouTube videos on this topic. Unfortunately the bolt will not just pop out.

ok thank you. will the extractors i have now work or would your recommend i pick up a longer set like these?

 

[2007LucerneCXL]

This may help,