| Author |
Message |
DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4790
Location: Bemidji, MN
|
 Posted: Wed Aug 30, 2017 2:05 pm Post subject: copper nuts aren't. |
 |
|
a word on copper nuts... i've gotten them from two different vendors (shipped with Go Westy SS exhaust and Autohausaz) and they are merely copper coated steel nuts. the copper coating is thin and if you touch one to a grinder, you see ferrous sparks and reveals steel. they are strongly magnetic.
maybe 'copper nuts' were always this way but with as thin as the coating is, i wouldn't expect them to last very long.
-dan |
|
| Back to top |
|
 |
Christopher Schimke
Samba Member
Joined: August 03, 2005
Posts: 5391
Location: PNW
|
| Posted: Wed Aug 30, 2017 2:09 pm Post subject: Re: copper nuts aren't. |
|
|
Copper nuts used for things like exhaust are, and always have been, copper plated, not solid copper.
_________________
"Sometimes you have to build a box to think outside of." - Bruce (not Springsteen)
*Custom wheel hardware for Audi/VW, Porsche and Mercedes wheels - Urethane Suspension Bushings*
T3Technique.com or contact me at [email protected] |
|
| Back to top |
|
|
?Waldo?
Samba Member
Joined: February 22, 2006
Posts: 9752
Location: Where?
|
| Posted: Wed Aug 30, 2017 2:13 pm Post subject: Re: copper nuts aren't. |
|
|
| X2, always have been copper plated. |
|
| Back to top |
|
|
DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4790
Location: Bemidji, MN
|
| Posted: Wed Aug 30, 2017 2:13 pm Post subject: Re: copper nuts aren't. |
|
|
ah. good to know. thought maybe some clever offshore bulk distributor flooded the US with fake nuts.
the thin coating bothered me when i did my exhaust install and so i used stainless nuts with high temp copper antiseize, which has worked well in the past on the exhaust port connections. used the copper nuts everywhere else.
-dan |
|
| Back to top |
|
|
vwjetboat
Samba Member
Joined: May 11, 2017
Posts: 1732
Location: Florida
|
| Posted: Wed Aug 30, 2017 2:15 pm Post subject: Re: copper nuts aren't. |
|
|
| solid copper is to soft, they would strip.. |
|
| Back to top |
|
|
ALIKA T3
Samba Member
Joined: July 30, 2009
Posts: 6357
Location: Honolulu,Hawaii and France
|
| Posted: Wed Aug 30, 2017 2:17 pm Post subject: Re: copper nuts aren't. |
|
|
| DanHoug wrote: |
ah. good to know. thought maybe some clever offshore bulk distributor flooded the US with fake nuts.
the thin coating bothered me when i did my exhaust install and so i used stainless nuts with high temp copper antiseize, which has worked well in the past on the exhaust port connections. used the copper nuts everywhere else.
-dan |
Yeah, I have a bag of a 100 from Febi. Quite junk 
I use real thick copper/brass alloy or something (it's in between copper and brass in color) stuff from old solar battery lugs 
I crunch them a bit or I use the lock washers that are in the same material. Anytime I have enough thread, I cover them with an acorn nut, plus a good load of copper antiseize. Butter 
_________________
Silicone Steering Boots and 930 Cv boots for sale in the classifieds.
Syncro transmission upgrade parts in the Classifieds.
Subaru EJ22+UN1 5 speed transmission
http://www.thesamba.com/vw/forum/viewtopic.php?t=416343
Syncro http://www.thesamba.com/vw/forum/viewtopic.php?t=4...num+gadget |
|
| Back to top |
|
|
Steve M.
Samba Member
Joined: July 30, 2013
Posts: 6832
Location: Fort Lauderdale, Fl.
|
| Posted: Wed Aug 30, 2017 2:46 pm Post subject: Re: copper nuts aren't. |
|
|
| vwjetboat wrote: |
| solid copper is to soft, they would strip.. |
yep!
Use the copper based Permatex Copper Anti-Seize on them.
_________________
This free advice is worth exactly what you paid for it.
There are seven days in a week. Someday is not one of them. |
|
| Back to top |
|
|
Tom Powell
Samba Member
Joined: December 01, 2005
Posts: 4855
Location: Kaneohe
|
| Posted: Wed Aug 30, 2017 3:31 pm Post subject: Re: copper nuts aren't. |
|
|
| DanHoug wrote: |
| ... i used stainless nuts with high temp copper antiseize ... |
With stainless you should use a zinc based antiseize. The problem with stainless is galling not corrosion.
https://www.permatex.com/products/lubricants/speci...lubricant/
Aloha
tp |
|
| Back to top |
|
|
Ahwahnee
Samba Member
Joined: June 05, 2010
Posts: 9810
Location: Mt Lemmon, AZ
|
| Posted: Wed Aug 30, 2017 4:00 pm Post subject: Re: copper nuts aren't. |
|
|
| Brass nuts are commonly available for manifold applications. I have used them on many vehicles. |
|
| Back to top |
|
|
Tom Powell
Samba Member
Joined: December 01, 2005
Posts: 4855
Location: Kaneohe
|
|
| Back to top |
|
|
newfisher
Samba Member
Joined: January 05, 2012
Posts: 1764
Location: The wet spot--Oregon
|
| Posted: Wed Aug 30, 2017 4:29 pm Post subject: Re: copper nuts aren't. |
|
|
| Anyone try " Deez nuts"? |
|
| Back to top |
|
|
Merian
Samba Member
Joined: January 04, 2014
Posts: 5212
Location: Orygun
|
| Posted: Wed Aug 30, 2017 5:33 pm Post subject: Re: copper nuts aren't. |
|
|
those are black oxide
good stuff
_________________
.... |
|
| Back to top |
|
|
DanHoug
Samba Member
Joined: December 05, 2016
Posts: 4790
Location: Bemidji, MN
|
| Posted: Wed Aug 30, 2017 6:52 pm Post subject: Re: copper nuts aren't. |
|
|
in this case, galling isn't an issue with a stainless nut on steel stud, it's stainless on stainless where things gall easily. so a high temp, copper antiseize is the ticket for max removal in the future along with corrosion resistance. nickel and zinc based antiseize just don't have persistence at high temp like the copper does, at least in my experience.
-dan |
|
| Back to top |
|
|
Butcher
Samba Member
Joined: December 05, 2015
Posts: 1285
Location: Right Here
|
| Posted: Thu Aug 31, 2017 8:04 am Post subject: Re: copper nuts aren't. |
|
|
| newfisher wrote: |
| Anyone try " Deez nuts"? |
I've tried DZ nuts, but I think that's a bit off topic.
https://www.dz-nuts.com/ |
|
| Back to top |
|
|
fxr
Samba Member
Joined: December 07, 2014
Posts: 2325
Location: Bay area CA
|
| Posted: Thu Aug 31, 2017 8:13 am Post subject: Re: copper nuts aren't. |
|
|
An old trick I was shown to prevent galling on stainless-stainless connections was to let a bottle of Milk of Magnesia settle, pour off the liquid and use the dregs as the anti-seize.
_________________
Jim Crowther
1984 1.9l EJ22 Westy Wolfsburg Edition
Vespa GTS 300 |
|
| Back to top |
|
|
Glenn 
Mr. 010
Joined: December 25, 2001
Posts: 76937
Location: Sneaking up behind you
|
| Posted: Thu Aug 31, 2017 8:30 am Post subject: Re: copper nuts aren't. |
|
|
Pennies aren't real copper either.
Ah the good old days.
_________________
Glenn
74 Beetle Specs | 74 Beetle Restoration | 2180cc Engine
"You may not get what you pay for, but you always pay for what you get"
Member #1009
#BlueSquare |
|
| Back to top |
|
|
Gizmoman
Samba Member
Joined: September 10, 2011
Posts: 1554
Location: Nevada
|
| Posted: Thu Aug 31, 2017 10:00 am Post subject: Re: copper nuts aren't. |
|
|
I'd check the torque spec on those SS nuts - good chance they can't handle the specs of the manifold torque.
_________________
82 Vanagon Westy - AAZ 1.9 TD, HE200 Holset, WAIC, 27.75 dia tires, Electric power steering, 5-speed AAP w/.078 5th
Oversize spare carrier - stock location (no longer for sale). |
|
| Back to top |
|
|
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
|
|
| Back to top |
|
|
newfisher
Samba Member
Joined: January 05, 2012
Posts: 1764
Location: The wet spot--Oregon
|
| Posted: Thu Aug 31, 2017 10:52 am Post subject: Re: copper nuts aren't. |
|
|
| djkeev wrote: |
People love stainless but fail to grasp that stainless is a very weak fastener. Be real careful where you install a stainless nut, bolt or screw.
Dave |
Brittle and never over torque the spec for the particlular hardware component ie if a mild steel grade 5 allows for a component tq spec of say 15 ft lbs, using a stainless fastner may snap at 15 if the stainless bolt snaps at 11. I only use stainless for outdoor direct element exposure on decorative items with no specific torque. |
|
| Back to top |
|
|
djkeev
Samba Moderator
Joined: September 30, 2007
Posts: 32625
Location: Reading Pennsylvania
|
|
| Back to top |
|
|
|
