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0320 Exhaust stud pulled out

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wb7doj

Active Member
Joined
Oct 13, 2021
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Location
Gig Harbor WA
Hi All
I was almost done putting my Pitts back together tonight when one of my exhaust studs started to pull out when I was torquing them down.
As soon as I felt something wrong I stopped and removed the pipe. The stud definitely was starting to pull out of the head. I installed a couple of nuts and gently tried to see if I could back the stud out but it didn't want to budge and I didn't want to put too much stress on it so I shot it with Aerokroil and left it for the night.
I was going to do some research this weekend on my options, but has anyone had any luck with heli-coils or an oversized stud on a lycoming cylinder?
I am really hoping not to have to pull of jug if I don't have to.
Any thoughts, ideas, or warnings would be greatly appreciated.
 

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