specific torx bit for stripped tailgate hinge bolts? - JeepForum.com

 
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post #1 of 10 Old 03-28-2007, 11:47 AM Thread Starter
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specific torx bit for stripped tailgate hinge bolts?

I'm replacing the tailgate hinges and was able to get the top hinge off using a T40 torx bit. unfortunately all three of the bolts on the bottom hinge are stripped.

i was told there are special torx bits that are grooved in a 'spiral' so that when you go to loosen the bolt it digs into the bolt for better grip allowing you to get out the stripped bolts easier.

does anyone know if this is true and if so what are they called? thanks.

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post #2 of 10 Old 03-28-2007, 11:49 AM
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Never saw or heard of any Torx bits like that. I've had to drill out a few Torx bolts because they were stripped out and it was no big deal. That or weld a Torx into the bolt... though if it snapped, you'd be in worse shape than before.

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post #3 of 10 Old 03-28-2007, 12:05 PM
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Sounds like a good idea, but also never heard of anything like that.

How stripped are the torx? Maybe try those big screwdriver looking impact wrench that you pound with a hammer and turn?
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post #4 of 10 Old 03-28-2007, 01:27 PM Thread Starter
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well i have very few tools and experience so it's not the easiest thing for me. i tried drilling them down but it didn't do much.

should i be using a specific type of drill bit? i bought a set of bolt extractor bits but they didn't do much. they're not like a typical drill bit. i do have 1 really sharp drill bit. i'll try that one tonight =)
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post #5 of 10 Old 03-28-2007, 01:38 PM
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Quote:
Originally Posted by first5.0
well i have very few tools and experience so it's not the easiest thing for me. i tried drilling them down but it didn't do much.

should i be using a specific type of drill bit? i bought a set of bolt extractor bits but they didn't do much. they're not like a typical drill bit. i do have 1 really sharp drill bit. i'll try that one tonight =)
any bit rated for hard steel.. and use lots of oil to keep it from over heating..

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post #6 of 10 Old 03-28-2007, 01:45 PM
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Drill metal isn't like drill wood, you don't just pull the trigger and let it spin as fast as possible.

You need to put pressure on the drill, without breaking the bit of course. Keep the rpm at around 500 or lower (I go as low as 200), so you see the bit is cutting into the metal instead of just grinding. Also use constant supply of cutting fluid to keep the bit cool and lubericated. There are cutting oil for sale but I'm cheap so I used gear oil that I use to fill my diff. Even WD40 is better than nothing. Now this may be overkill but I keep a cup of ice water to cool down the bit periodically.
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post #7 of 10 Old 03-28-2007, 01:53 PM
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post #8 of 10 Old 03-28-2007, 02:41 PM
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If those work, I'm buying them. I was trying to put on my mirror movers when the passenger side heads stripped. Those bolts must be made out of butter.
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post #9 of 10 Old 03-28-2007, 02:54 PM
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Quote:
Originally Posted by first5.0
well i have very few tools and experience so it's not the easiest thing for me. i tried drilling them down but it didn't do much.

should i be using a specific type of drill bit? i bought a set of bolt extractor bits but they didn't do much. they're not like a typical drill bit. i do have 1 really sharp drill bit. i'll try that one tonight =)
The diameter of the bit needs to be just larger than the threaded portion of the stud. Too large of a bit and it will be harder to drill the head of the Torx bolt off. Drill the head off then the hinges can be removed. Then you can use vise grips to turn the remaining bolt studs out as with the head gone, they won't be too tight to turn out. Don't try to drill into where they are threaded.

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post #10 of 10 Old 03-31-2007, 12:59 PM Thread Starter
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thanks for the help. i found some drill bits which worked perfect. i used a large diamter bit to start and then finished with a smaller diamter bit. i didn't go crazy with the rpm's however i have no clue how fast it was going. i just kept constant pressure and i could see it quickly make progress. eventually it just broke the bolts.

the backing plate on the body of the jeep was completed rusted to the bolts. fortunately the bolts in the backing plate of the gate were able to unscrew with a set of grips.

thanks for the help.
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