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Buell Forum » Knowledge Vault (tech, parts, apparel, & accessories topics) » Engine » Exhaust: Headers, Muffler, Gaskets, Supports » Exhaust Stud « Previous Next »

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Rudy
Posted on Sunday, April 24, 2011 - 09:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

Hello. I searched for exhaust stud, but most threads were about BROKEN studs and having to drill, helicoil, etc.

My problem is this: I was turning the nut on one of my front exhaust studs when the stud started turning with the nut. i wasn't using the regular exhaust nut, I got some self-locking k-nuts off of ebay because I had a exhaust nut loose in the past and it made me nervous.

Anyways, I looked through the service manual but didn't see anything on this topic. Maybe I wasn't looking in the right spot.

I just put a bunch of red loctite on it and turned it so it has about the same number of threads showing as the other stud. I tried turning it until it bottomed out in the head, but it was in farther than the other stud, so I backed it out some. Is this correct?

Thanks : )
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Reepicheep
Posted on Monday, April 25, 2011 - 07:54 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

That's fine. The studs are threaded on both ends. The self locking nuts probably just had too much resistance.

Check the rest of your exhaust system (isolators, bolts, etc). Some times the nuts just back off the studs, but more often something else is missing or worn out.
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Al_lighton
Posted on Monday, April 25, 2011 - 09:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Custodian/Admin Only) Ban Poster IP (Custodian/Admin only)

I wouldn't use the lock nuts. They'll do what you said when putting them in, and also may back the stud OUT when removing them. After a few cycles of that, you may find it hard to keep the studs in the head. And you don't need them to keep the nuts from coming loose if you properly torque them when you install the headers. The key is that you can't just torque them once. You have to torque them each time for the first heat cycles. After a few heat cycles, they stop loosening. The reason is that the exhaust gasket compresses each time just a little.

The nuts that we sell are stainless and have serrations on the bottom of the nut. That also helps with them not coming loose. See http://www.americansportbike.com/shoponline/ccp0-p rodshow/17134.html
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