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brass acorn exhaust nuts
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DanHoug
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PostPosted: Thu Jan 30, 2020 6:00 pm    Post subject: Re: brass exhaust nuts Reply with quote

bluebus86 wrote:
do to the heat, spring lock washers oft dont work well here. Everytime I had used them, I later found that the lost spring, and turned into flat washers with a slit in them


these are slit-less Bellvue washers, might keep their sproing better. but.... have you EVER had a Vanagon exhaust nut come loose? at least in the rust belt, lock washers are not needed.
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DanHoug
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PostPosted: Mon Nov 29, 2021 1:03 pm    Post subject: Re: brass exhaust nuts Reply with quote

'nother update... nearly 3 years later, the brass acorn nuts look pretty much brand new. 100% satisfied with them and i KNOW they'll come off easy.

that said, FCP has some "copper nuts" i'd not seen before. you get a 100 but they're onsale for $40 off right now. they LOOK different than the miserable copper plated steel nuts that last about 6 months. who knows! someone try some of these and report back. i'd buy some but i'm too dang happy using brass acorn nuts and will do so for any future work.
https://www.fcpeuro.com/products/audi-vw-exhaust-nut-18301737774
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jlrftype7
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PostPosted: Mon Nov 29, 2021 3:09 pm    Post subject: Re: brass exhaust nuts Reply with quote

DanHoug wrote:
'nother update... nearly 3 years later, the brass acorn nuts look pretty much brand new. 100% satisfied with them and i KNOW they'll come off easy.

that said, FCP has some "copper nuts" i'd not seen before. you get a 100 but they're onsale for $40 off right now. they LOOK different than the miserable copper plated steel nuts that last about 6 months. who knows! someone try some of these and report back. i'd buy some but i'm too dang happy using brass acorn nuts and will do so for any future work.
https://www.fcpeuro.com/products/audi-vw-exhaust-nut-18301737774
Thanks Dan, I ordered some to give them a try, as you noted, they or almost anything else might hold up better than the Copper Plated nuts I currently use.
Good to hear the Brass is working out for you with no issues.
Years ago, BMW had lots of issues with the buzzy 4 cyl engine of the E-30 M3s walking both studs and exhaust nuts off the engine.... Rolling Eyes Rolling Eyes
But, they were smaller than the normal 8mm version, I think 6mm if I remember right. Embarassed Embarassed
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DanHoug
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PostPosted: Mon Nov 29, 2021 3:19 pm    Post subject: Re: brass exhaust nuts Reply with quote

if they really are non-magnetic, copper nuts, i'll buy a pack too for other uses!

had to go out and snap a picture of the nuts that were installed in Feb 2019.... look pretty swell considering 2 salty winters.

Image may have been reduced in size. Click image to view fullscreen.

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djkeev
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PostPosted: Mon Nov 29, 2021 3:51 pm    Post subject: Re: brass exhaust nuts Reply with quote

I followed Dan's lead and used the brass Acorn nuts.

While time passage has been less than a year, I am up to 12,000 troubk free mikes running them.

Highly recommend them!

Dave
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the joker
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PostPosted: Mon Nov 29, 2021 6:00 pm    Post subject: Re: brass exhaust nuts Reply with quote

link us in for the best source to purchase some , want to go stainless ex this year, want to add those.
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DanHoug
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PostPosted: Tue Nov 30, 2021 4:21 pm    Post subject: Re: brass exhaust nuts Reply with quote

the joker wrote:
link us in for the best source to purchase some , want to go stainless ex this year, want to add those.


don't have a link for you but search for M8x1.25 "High crown" cap nuts. the important part being 'high crown' which gives extra depth for the stud. brass or stainless, both are available. i'm surprized how well brass works in corrosive conditions, mebbe that's why they use it so much on ships. but stainless is probably fine, slather everything with anti-sieze before assembly.

i'm convinced having a sealed cap nut is the way to prevent stud deterioration and subsequent grinding and gnashing of teeth. i SO want to pull one of these brass cap nuts off to experience the joy, but ain't gonna. until i have to.
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djkeev
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PostPosted: Tue Nov 30, 2021 4:30 pm    Post subject: Re: brass exhaust nuts Reply with quote

DanHoug wrote:
the joker wrote:
link us in for the best source to purchase some , want to go stainless ex this year, want to add those.


don't have a link for you but search for M8x1.25 "High crown" cap nuts. the important part being 'high crown' which gives extra depth for the stud. brass or stainless, both are available. i'm surprized how well brass works in corrosive conditions, mebbe that's why they use it so much on ships. but stainless is probably fine, slather everything with anti-sieze before assembly.

i'm convinced having a sealed cap nut is the way to prevent stud deterioration and subsequent grinding and gnashing of teeth. i SO want to pull one of these brass cap nuts off to experience the joy, but ain't gonna. until i have to.


FYI ...... Stainless and Ferrous don't play well together.
Especially in high heat situations.

So many people think stainless is God's answer to a seized nuts....... it isn't and stainless can create more problems than it solves....... but it sure feels good to use them!
Stainless is weak and galls easily.

Dave
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DanHoug
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PostPosted: Tue Nov 30, 2021 5:54 pm    Post subject: Re: brass exhaust nuts Reply with quote

in the broadcast world where time is money and crap happens 1500 feet up in the air, hot dipped galvanized hardware is the standard, stainless is not. out in the elements 24/7 plus high voltage lightning strikes and 100kW of RF flowing thru everything, it's a nasty environment.

earlier, i've used stainless nuts on exhaust studs. the stainless nuts held up but the stud corroded to heck, not much gain other than more purchase to snap the stud off with. again, i believe the key is to cover the stud from the nasty outside world. and who does't want brass nuts??!
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Sodo
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PostPosted: Tue Nov 30, 2021 8:43 pm    Post subject: Re: brass exhaust nuts Reply with quote

How is it, that DanHoug pioneers this in y2019?
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djkeev
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PostPosted: Tue Nov 30, 2021 8:50 pm    Post subject: Re: brass exhaust nuts Reply with quote

Sodo wrote:
How is it, that DanHoug pioneers this in y2019?


He comes from that part of the Country where all the women are strong, all the men are good-looking, and all the children are above average.


Here is where I purchased mine .....

https://www.belmetric.com/m8x125-coarse-c-3_50_224...lrl9k6s6p0

Dave
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Butcher
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PostPosted: Wed Dec 01, 2021 8:46 am    Post subject: Re: brass exhaust nuts Reply with quote

Sign me up. I'm in the Seattle area and everywhere you look as far as you can see, it's nuts.
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Jake de Villiers
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PostPosted: Wed Dec 01, 2021 9:01 am    Post subject: Re: brass exhaust nuts Reply with quote

djkeev wrote:
Sodo wrote:
How is it, that DanHoug pioneers this in y2019?


He comes from that part of the Country where all the women are strong, all the men are good-looking, and all the children are above average.
Dave
Nice one, Dave! Very Happy
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DanHoug
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PostPosted: Wed Dec 01, 2021 2:51 pm    Post subject: Re: brass exhaust nuts Reply with quote

okay, had to take a nut off... for Science! after initial breakaway torque with 13mm box end wrench, spun off with fingers. it was incredible. re-applied anti-sieze and put it back on.

Image may have been reduced in size. Click image to view fullscreen.

Image may have been reduced in size. Click image to view fullscreen.

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PostPosted: Wed Dec 01, 2021 4:53 pm    Post subject: Re: brass exhaust nuts Reply with quote

Brave man unscrewing exhaust nuts!

Dave
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PostPosted: Wed Dec 01, 2021 5:32 pm    Post subject: Re: brass exhaust nuts Reply with quote

djkeev wrote:
Brave man unscrewing exhaust nuts!

Dave


confidence exemplified
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PostPosted: Wed Dec 01, 2021 5:57 pm    Post subject: Re: brass exhaust nuts Reply with quote

djkeev wrote:
FYI ...... Stainless and Ferrous don't play well together.
Especially in high heat situations.

So many people think stainless is God's answer to a seized nuts....... it isn't and stainless can create more problems than it solves....... but it sure feels good to use them!
Stainless is weak and galls easily.

Dave


I suppose I'm lucky or probably has to do with the mild southern California weather, but my experience with stainless has always been good. Started using in about 2003 for exhaust hardware (nuts, bolts, washers) and have never had an issue unfastening them. My engine got all studs removed and bolts used for exhaust in 2012 and took them off in 2020 easily. Also, there are many types of stainless, so I may have the lucky variety, but I don't know what it is.

Jim Davis
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DanHoug
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PostPosted: Wed Dec 01, 2021 6:18 pm    Post subject: Re: brass exhaust nuts Reply with quote

this is what happens when you DON'T live in a mild climate. a stainless nut would be more intact but the stud itself dissolves.
Image may have been reduced in size. Click image to view fullscreen.

as i look at my previous cap nut off photos i see a few things:

- the brass cap nut to Belleville washer interface appears full contact and a suitable oxygen barrier, hence no oxidation corrosion.

- i'll assume the Belleville washer to exhaust flange interface to be also nearly air tight. while a small contribution, a fully circular Belleville washer, unlike a split washer, leaves no pathway for moisture nor oxygen.

- looks like a deposit from one of Satan's Little Helpers ontop of the head. grrrrrrrrr.
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jlrftype7
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PostPosted: Fri Dec 03, 2021 5:10 pm    Post subject: Re: brass exhaust nuts Reply with quote

The exhaust nut order arrived- they are only copper plated steel, the usual. FYI Dan, and anyone else wondering about those from FCP.
They did not resemble the pictured nuts in the AD, but ended up being the usual bright copper exh. nuts like everyone else’s…. Razz
But now I’m fully stocked on 8mm exh nuts… Smile So there’s that…
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DanHoug
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PostPosted: Fri Dec 03, 2021 5:20 pm    Post subject: Re: brass exhaust nuts Reply with quote

jlrftype7 wrote:
The exhaust nut order arrived- they are only copper plated steel, the usual. FYI Dan, and anyone else wondering about those from FCP


so.... after you ordered i found "18301737774 CRP COPPER NUT,10MM" 100 count for $4.83 with free delivery on Amazon. WTF??! so i HAD to order them. exact same CRP part number. enroute but not delivered. i won't return these regardless of authenticity or solid copper as i can always use 10mm nuts. but i would be tempted to return your order if indeed mine comes as the advertised product, of which i'm always dubious with Amazon.

dang it. sorry to have tempted you into this but we always gotta be on the look out. thanks for taking one for the team.
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