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Flange nuts continue to looses?

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Old Dec 15, 2022 | 07:16 AM
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Originally Posted by RANGER73
Loctite would be a waste of time; the heat would render the Loctite useless.
I'd be surprised if Lictite didn't offer a high temp solution.Either way I've ordered k self locking nuts.
 
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Old Dec 15, 2022 | 11:34 AM
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You should be able to get them at Fastenal.
 
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Old Dec 15, 2022 | 11:39 AM
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There is also aerotight self locking nuts but I don't know what sizes are available.
 
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Old Dec 15, 2022 | 12:00 PM
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Originally Posted by murphc13
I can't seem to upload pics.When I hit the button to upload pics and select 'from this device' it doesn't let me go further than selecting the pic but that's it.
Are you clicking the upload button after selecting your photo?

 
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Old Dec 15, 2022 | 12:03 PM
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Originally Posted by vicsponjr
Are you clicking the upload button after selecting your photo?
It doesn't get that far(it did when I joined the forum 1st).When I click 'upload from thos device' it brings me to my pics and when I select the one I want it doesn't prompt an OK(or similar) like it did before.​​​​​​​however I've noticed if choose 'take picture' it does let me upload.
 
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Old Dec 15, 2022 | 12:12 PM
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Hard to tell. But elliptical locks aren't round on one side of the nut. This allows tension to always be squeezed. These are all over jet engines. I don't worry about getting the FAA-PMA verified ones and just source them from McMasters.



Flange nuts continue to looses?-photo6.jpgFlange nuts continue to looses?-photo618.jpg
 
Last edited by hrdtail78; Dec 15, 2022 at 12:15 PM.
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Old Dec 15, 2022 | 12:16 PM
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Originally Posted by hrdtail78
Hard to tell. But elliptical locks aren't round on one side of the nut. This allows tension to always be squeezed. These are all over jet engines. I don't worry about getting the FAA-PMA verified ones and just source them from McMasters. 
Not sure if they're like the K nuts I ordered.But what do you mean by not round on one side?
 
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Old Dec 16, 2022 | 06:38 AM
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Originally Posted by murphc13
Not sure if they're like the K nuts I ordered.But what do you mean by not round on one side?
The bottom hole is round. Where the stud starts into the nut. The hole where stud will protrude is oval. Imagine putting a nut in the vice and only squeezing the top hole shut. When installed. This oval hole becomes round and there is constant squeeze pressure on the bolt. Stock pic from net. Look at 10 oclock to 4 oclock compared to 90 degrees. Can you see how it is oval?




 
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Old Dec 16, 2022 | 06:39 AM
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Originally Posted by hrdtail78
The bottom hole is round. Where the stud starts into the nut. The hole where stud will protrude is oval. Imagine putting a nut in the vice and only squeezing the top hole shut. When installed. This oval hole becomes round and there is constant squeeze pressure on the bolt. Stock pic from net. Look at 10 oclock to 4 oclock compared to 90 degrees. Can you see how it is oval? 
I can my man.Thanks for clearing it up.
 
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Old Dec 31, 2022 | 09:50 AM
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Just an update on this.I bought 4 k locking nuts which I believe are oval in part helping them to lock down.So I removed the headers,changed the rear port gasket and reinstalled with the new k nuts.​​​​​​​All is good now.Torqued to 11Nm which I believe is around 100 ish In lbs.
Thanks for the help guys and gals and happy new year to you all.
 
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