Stripped/weirdly mashed, beveled M14 Caliper Carrier bolts (photos)

[Geo]

OK folks, I'm going to guess this is a "gotta take it to the shop" job.
Short version: Two of the M14 rear caliper carrier bolts are apparently stripped and/or mashed. Is there anything I can do about this, short of taking this car to a mechanic? (For starters, this is the condition these were in when I got this car ~3 months ago, aside from me brushing out some debris. If I'd stripped them myself, I'd probably be more angry about it, heh).
Longer version: I'm mid rear brake/rotor job on my 2009 JSW, and I get to the M14 Triple square caliper carrier bolts that everyone's DIY guide says "these are awful to get out." Well, it looks like the previous owner, or a previous mechanic had a similar issue. One of these bolts is rounded out, and the other one is...something. Both of these funky bolts have bevels cut into them, though. Related? Dunno!
Note that this only seems to affect the *top* caliper carrier bolts; the bottom ones are decent enough looking, though I haven't tried to loosen them yet; I don't see the point if I won't be able to get the top ones out.
I'm going to guess that this is a "take it to a mechanic" job, which is unfortunate as I was really hoping to get these wheel bearings taken care of myself. Oh well! (I guess I could take the car to a mechanic and have them install my not-really-needed rotors, and ask that they replace these nightmare bolts with something else).
I also wonder - could this bevel thing have been a failed (or successful!?) attempt to remove these in the past?
Here's the album on IMGUR.
Driver's Side, Rear Caliper Carrier Bolt (Top) - Stripped
Also note the beveled corner

Driver's Side, Rear Caliper Carrier Bolt (Bottom) - Looks OK

Passenger Side, Rear Caliper Carrier Bolt (Top) - Weirdly mashed
Same bevel, too

Rear Driver Top Bolt, different angle (of bevel)

 

[meerschm]

ouch.

one way or another, some cutting is in the future of those bolts.

the right replacement part is the oem bolt.

(and the right tool to install)

 

[\/\/0J0]

Whether you take it to a shop or not depends on your skill set and tools available. If you're good with an angle grinder or cutoff wheel, you could try cutting some flats onto the bolt head to get a socket or crescent wrench onto it. Or maybe find a nut that you could weld on/over the bolt head.

sent from my mobile look at device

 

[MP517PRCT]

After I purchased my '09 JSW, I found out that the security key for the lug bolts was missing, rather than purchase a new security key, I took a "junk" 12 point socket that was just slightly larger than the lug bolt head, but not large enough to fit over it. I pounded the socket over the bolt heads (creating my own 12 point pattern in the bolt head) and then attached a long breaker bar and got them out. (I then replaced the security bolts with standard ones).

Point is, if you have a 12 point socket that you can pound over the heads of you caliper carrier bolts, you might want to give that a try. Considering the current condition of your bolts, you'll have to replace them anyway so you don't have much to lose. At worst you'll be out a socket!

 

[Geo]

Considering the current condition of your bolts, you'll have to replace them anyway so you don't have much to lose. At worst you'll be out a socket!

I believe these bolts are supposed to be replaced and not reused anyway, so that's a given.

I guess the question I have is this: is it possible that I'll make it *worse?*

Everything I read indicates that these bolts are awful to take off (and even put back on). I don't have an angle grinder, though am not opposed to getting more tools. But the combination of stuff is leading me to the "Nope, can't do it" thinking. Very frustrating!

 

[740GLE]

good ol magnisum chloride, send your thanks to MDOT's addiction to the stuff.

IMO certain roads should just be kept snow covered from 12/1-3/15

 

[\/\/0J0]

You can't really make it worse, provided you don't toof the caliper or brake lines. In the absolute worst case, the head will get cut off the bolt and a cutting wheel or sawzall blade will go between the caliper and mounting surface shop as to cut the bolt to be able to remove the caliper so that the old bolt can be drilled out, the hole tapped and possibly a helicoil put in to retain the ability to use a stock bolt size.
Seems to me that, similar to the 12 point socket idea, there are sockets with left hand, deep biting threads in them, made for removing bolts with stripped heads. Might be worth a shot if the 12 point socket doesn't work out.

sent from my mobile look at device

 

[banshee365]

https://www.amazon.com/SK-803-Standard-Turbosocket-Fastener/dp/B0007GGUEC

They are available seperatly so maybe you can figure the size you need and just buy that one. If you can afford the whole set they are invaluable when you need them.

 

[Geo]

https://www.amazon.com/SK-803-Standard-Turbosocket-Fastener/dp/B0007GGUEC

They are available seperatly so maybe you can figure the size you need and just buy that one. If you can afford the whole set they are invaluable when you need them.

Will those work on the outside of a *round* bolt?

 

[meerschm]

Having only done intact bolts on the rear of my car,

the geometry is not going to be your friend.

my choice would be a sawzall with a long, cobalt coated fine tooth blade. (if you think you can get to it from the side)

the caliper mounting bolt has a washer, so you should have clearance to cut the head off, and not cut up the spindle.

(you could put some kind of a spacer to help keep the blade away if you like. perhaps tape a couple hacksaw blades,)

 

[Andrewh]

Will those work on the outside of a *round* bolt?

yes, that is what they are for. someone rounding a bolt off.

but I wonder if you could get a set of vice grips on them? it seems you have the room.

 

[05_new_jetta]

Weld a nut on it and replace with a hex bolt. Already went through this with my car

 

[Geo]

Weld a nut on it and replace with a hex bolt. Already went through this with my car

Oh, hell. Maybe I need to learn to weld? I assume this takes more than blowtorch/plumbing solder!

 

[meerschm]

not sure the brakes on your car are a good subject for a learn to weld project.

 

[turbocharged798]

A small pipewrench on the head will get them out.