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help stripped alen head on output flange!

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Old 02-21-2010, 07:09 PM
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Default help stripped alen head on output flange!

I am trying to change my ap1 trans out and I've got five of the alen head bolts out of the output/companion flange that bolts up to the driveshaft but the last got stripped bad. The others I got out nice and clean using an alen key and a long socket on the end of an extension (they were real tight).

I can't get a strait shot at it with a drill bit to try an easy out and the pipe wrench won't hold it either it just keeps slipping off no matter how tight I squeeze it...

Anyone else got recommendations? Any help appreciated
Old 02-21-2010, 07:29 PM
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Cut the bolt head off with a die grinder or dremel.

Don't cut into the propshaft.
Old 02-21-2010, 09:40 PM
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Originally Posted by Slows2k,Feb 21 2010, 08:29 PM
Cut the bolt head off with a die grinder or dremel.
i had to do that as well
Old 02-22-2010, 02:35 AM
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get a sharp cold chisel and hammer. Angle the chisel into the corner of the head and strike it so it digs into the metal and rotates the fastener in the undo direction.

Alternatively, weld and old nut over the head and use a shifter to unwind it.
Old 02-22-2010, 06:57 AM
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Originally Posted by Stealth_SUX_,Feb 21 2010, 10:40 PM
i had to do that as well
my concern with this is that the bolt is still in there and it won't disconnect from the driveshaft so I can pull the transmission back. did you find this made it more difficult to pull the tranny back?

I'd like to get the bolt to turn somehow like with the chisel and hammer idea suggested but theres so little bolt and space to work with.

I could have had the whole thing done by now If I hadn't screwed up this bolt... hate it when that happens
Old 02-22-2010, 09:56 AM
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I'm not familiar with the bolt you are referring to, but on motorcycle restorations I've had to use BF Vice Grips around the head of a bolt that was stripped...since you can get a pipe wrench on it, I'd suggest big vice grips next.
Old 02-22-2010, 10:28 AM
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Originally Posted by black2000,Feb 22 2010, 10:57 AM
my concern with this is that the bolt is still in there and it won't disconnect from the driveshaft so I can pull the transmission back. did you find this made it more difficult to pull the tranny back?

I'd like to get the bolt to turn somehow like with the chisel and hammer idea suggested but theres so little bolt and space to work with.

I could have had the whole thing done by now If I hadn't screwed up this bolt... hate it when that happens
once you dremel off the head, the threaded part comes out by hand. the head of the bolt is just seized to the ouput flange. i have seen this personally on a few ap1's.
Old 02-22-2010, 08:34 PM
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try driving a torx head socket into the stripped hole with a hammer. Put vice grips on the outside of the bolt head and turn both at the same time. usually works great and is much faster than grinding.
Old 02-22-2010, 08:38 PM
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dont cut anything off.

go get whats called a "bolt out kit" from sears. its a socket that has these blades that bite into the outside of the head as you back the bolt out. its just a simple external extractor. it will work. ive used mine hundreds of times.

get the kit with like....8 pieces its about 45-65 bucks and its a life saver.
Old 02-23-2010, 02:40 PM
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Agreed, the outside style extractors work great. (Much better than inside style EZ-Outs) I'm not sure if you'll have the clearance for it or not though. I had the same fear when I dropped my driveshaft. You can try extractor + wobble + extension + ratchet. Failing that, cut the head and EZ-out?


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