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djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32632
Location: Reading Pennsylvania
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 Posted: Sat Dec 04, 2021 6:29 am Post subject: Re: brass exhaust nuts |
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| SyncroHead wrote: |
| 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 |
Well........ when you don't have any corrosion with exposed ferrous steel....... you certainly won't have corrosion with stainless, no matter what grade it is.
Do watch out for stainless galling and locking up though! You don't need corrosion for this fun!
Dave
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4799
Location: Bemidji, MN
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| Posted: Wed Dec 08, 2021 7:22 am Post subject: Re: brass exhaust nuts |
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| DanHoug wrote: |
| 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.
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my Amazon nut arrived.... yes, singular! once again, what was advertised on Amazon, a 100 pack of nuts weighing 2.23lbs, was not what was delivered..... one friggin' nut.
i've opened a case but am not hopeful because Amazon is running everything thru the seller. only $5 loss, not a big deal but am pushing them on the principle.
aaaand the nut is magnetic, too.
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-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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Butcher
Samba Member
Joined: December 05, 2015
Posts: 1285
Location: Right Here
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| Posted: Wed Dec 08, 2021 8:18 am Post subject: Re: brass exhaust nuts |
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I too would push Amazon, but then I don't buy through them.
Buy local, bring a magnet. |
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Steve M.
Samba Member
Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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| Posted: Wed Dec 08, 2021 8:20 am Post subject: Re: brass exhaust nuts |
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| DanHoug wrote: |
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.
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In the U.S. Navy test hot dipped galvanized metal stood up better then any of alloy to the salt water environment. When the testing was all done and math calculated it was expected the galvanized hardware would last at least 99 yrs.
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vanis13
Samba Member
Joined: August 15, 2010
Posts: 3100
Location: ABQ NM USA.... Except when not
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| Posted: Wed Dec 08, 2021 8:48 am Post subject: Re: brass exhaust nuts |
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| DanHoug wrote: |
i've opened a case but am not hopeful because Amazon is running everything thru the seller. |
Keep on top of it. Amazon will step in if Seller doesn't solve - they just want the Seller to deal with stuff first.
I've had a 12v compressor fridge I wanted to return, Amazon contact said contact seller, did that, seller didn't reply, Amazon refunded and said to keep fridge.
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11BC2
Samba Member
Joined: August 27, 2017
Posts: 495
Location: Cool, California
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| Posted: Wed Dec 08, 2021 9:11 am Post subject: Re: brass exhaust nuts |
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| Steve M. wrote: |
| DanHoug wrote: |
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.
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In the U.S. Navy test hot dipped galvanized metal stood up better then any of alloy to the salt water environment. When the testing was all done and math calculated it was expected the galvanized hardware would last at least 99 yrs. |
One thing missing is the effect that elevated temperature has on accelerating corrosion; higher temps add energy to a chemical reaction of corrosion. |
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11BC2
Samba Member
Joined: August 27, 2017
Posts: 495
Location: Cool, California
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| Posted: Wed Dec 08, 2021 9:16 am Post subject: Re: brass exhaust nuts |
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| the joker wrote: |
| link us in for the best source to purchase some , want to go stainless ex this year, want to add those. |
https://www.belmetric.com/ is my go to place for various fasteners. |
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4799
Location: Bemidji, MN
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| Posted: Wed Dec 08, 2021 9:57 am Post subject: Re: brass exhaust nuts |
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| vanis13 wrote: |
Keep on top of it. Amazon will step in if Seller doesn't solve - they just want the Seller to deal with stuff first.
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seller will refund my $5.18... hopefully i get to keep the nut! said they were "out of the product" and cannot fullfil my order. i can live with that, allowing them a graceful if not truthful way out.
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-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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jlrftype7
Samba Member
Joined: July 24, 2018
Posts: 3582
Location: Chicago
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| Posted: Wed Dec 08, 2021 5:31 pm Post subject: Re: brass exhaust nuts |
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| DanHoug wrote: |
| vanis13 wrote: |
Keep on top of it. Amazon will step in if Seller doesn't solve - they just want the Seller to deal with stuff first.
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seller will refund my $5.18... hopefully i get to keep the nut! said they were "out of the product" and cannot fullfil my order. i can live with that, allowing them a graceful if not truthful way out. |
Good Lord, ONE NUT…. 
Better than an empty box, I guess… 
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gears
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Joined: October 28, 2002
Posts: 4391
Location: Tamarack, Bend, Kailua
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| Posted: Mon Dec 13, 2021 9:46 am Post subject: Re: brass exhaust nuts |
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I don't remember where I purchased these copper-coated STEEL nuts, but the package may be familiar to someone:
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Steve M.
Samba Member
Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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| Posted: Mon Dec 13, 2021 9:53 am Post subject: Re: brass exhaust nuts |
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| DanHoug wrote: |
| vanis13 wrote: |
Keep on top of it. Amazon will step in if Seller doesn't solve - they just want the Seller to deal with stuff first.
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seller will refund my $5.18... hopefully i get to keep the nut! said they were "out of the product" and cannot fullfil my order. i can live with that, allowing them a graceful if not truthful way out. |
Check McMaster-Carr
https://www.mcmaster.com/nuts/metric-brass-hex-nuts/
Not sure if they have acorn nuts.
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Crankey
Samba Member
Joined: July 11, 2004
Posts: 2659
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| Posted: Mon Dec 13, 2021 10:00 am Post subject: Re: brass exhaust nuts |
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| Hope the brass cap nuts work out. Seems like a good idea. |
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Steve M.
Samba Member
Joined: July 30, 2013
Posts: 6833
Location: Fort Lauderdale, Fl.
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| Posted: Mon Dec 13, 2021 10:06 am Post subject: Re: brass exhaust nuts |
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| gears wrote: |
I don't remember where I purchased these copper-coated STEEL nuts, but the package may be familiar to someone:
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They look like the same nuts available through Van Cafe.
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1988M5
Samba Member
Joined: January 23, 2016
Posts: 674
Location: Santa Cruz, CA
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| Posted: Mon Dec 13, 2021 12:50 pm Post subject: Re: brass exhaust nuts |
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Any local Autohaus will have these in stock in their "go-to" blue Winsor boxes.
BK
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tjet 
Samba Member
Joined: June 10, 2014
Posts: 3533
Location: CA & NM
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| Posted: Tue Dec 14, 2021 7:36 am Post subject: Re: brass exhaust nuts |
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I installed ARP s/s studs & BMW copper nuts. Note, the ARP studs are very expensive, but I had a bad experience with rusted out exhaust hardware on my the original syncro engine. My only option was to replace the engine (or cut the exhaust and remove the heads to drill out all the studs & bolts). It needed a fresh engine anyway, and I never want to have an issue with the harware again.
https://www.thesamba.com/vw/forum/viewtopic.php?t=...mp;start=0
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Chinaclipper
Samba Member
Joined: October 03, 2019
Posts: 637
Location: Somewhere in the great Midwest
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| Posted: Fri Apr 21, 2023 11:16 am Post subject: Re: brass exhaust nuts |
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| Steve M. wrote: |
| gears wrote: |
I don't remember where I purchased these copper-coated STEEL nuts, but the package may be familiar to someone:
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They look like the same nuts available through Van Cafe. |
I got mine at Amazon---
12 for $10
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Van den Broke
Samba Member
Joined: May 20, 2012
Posts: 158
Location: Victoria, Canada
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| Posted: Sat Apr 22, 2023 8:05 pm Post subject: Re: brass exhaust nuts |
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[/quote]
In the U.S. Navy test hot dipped galvanized metal stood up better then any of alloy to the salt water environment. When the testing was all done and math calculated it was expected the galvanized hardware would last at least 99 yrs.[/quote]
Weird, it sure doesn't hold up that well in the Canadian Navy (where I work).
My 1969 Corolla used stainless studs and brass nuts. Some '60s US cars also used brass nuts, but plain steel studs. So brass nuts certainly are proven.
Copper plated steel fasteners would appear to be pretty useless in outdoor use, since the copper is a less reactive metal than iron. That means the iron in the steel will preferentially corrode to protect the copper. |
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logans5vw
Samba Member
Joined: July 03, 2011
Posts: 35
Location: chicago
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| Posted: Sun Apr 23, 2023 9:53 am Post subject: Re: brass acorn exhaust nuts |
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| I'm about to install new heads and an exhaust sys (non SS) but don't know yet if new studs will be used. So reading the great posts it looks like the acorn brass nuts would be the best fasteners for this? or will the copper nuts be sufficient? I don't use my westy in the winter. |
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DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4799
Location: Bemidji, MN
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| Posted: Sun Apr 23, 2023 10:32 am Post subject: Re: brass acorn exhaust nuts |
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the copper coated nuts are crap, i would buy hardware store stainless nuts and use them with lots of anti-sieze before i'd use copper coated again. they are just flash coated steel nuts with a rilly rilly thin layer of copper for color more than corrosion resistance.
but which ever you use, after the final torque down onto the header, add more nuts to cover the exposed threads of the stud.
_________________
-dan
60% of what you find on the internet is wrong, including this post.
'87 Westy & '89 Westy both 2.1 4spd
Past projects can be found at--
www.thefixitworkshop.com |
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djkeev
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Joined: September 30, 2007
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