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240Gordy
Samba Member
Joined: May 15, 2008
Posts: 2354
Location: Vancouver, BC
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 Posted: Thu Oct 14, 2010 12:38 pm Post subject: Don't use Stainless Steel coolant pipes |
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Read this,
http://www.rjes.com/html/material_choice.html
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Tencentlife said,
"So, now that you know what you're doing, go to town."
2010 GOLF TRENDLINE 2.5
1985 GL now with more! a 2.1L
H&R SPORT(RED) Springs FRONT , SLAM SPECIALTIES RE6 AIRBAGS REAR |
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kenmag
Samba Member
Joined: March 12, 2007
Posts: 275
Location: Toronto, Canada
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| Posted: Thu Oct 14, 2010 1:02 pm Post subject: |
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87GL Westy/suby ej22
87GL tintop/suby ej22
05 Golf TDI
95 jetta GLX |
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Destructo
Samba Member
Joined: July 31, 2006
Posts: 407
Location: Westhampton, MA
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| Posted: Thu Oct 14, 2010 1:15 pm Post subject: |
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So my question to those who understand this phenomenon better than I:
My new SS pipes don't have metal to metal contact with the engine, Radiator or heater cores. Why should this worry me?
The only direct contact that my pipes have with any other metallic surface is the frame of the vehicle.
Something tells me that the sky is not falling yet.
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1985 Wolfsburg Edition Westfalia Camper Bostig conversion
Dude, where's your van? |
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DAIZEE
Samba Member
Joined: January 26, 2010
Posts: 7552
Location: Greater Toronto Area Ontario West Side
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| Posted: Thu Oct 14, 2010 1:24 pm Post subject: |
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I can't get the link open but I'm wondering if this is about electrolysis.
 sorry
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'09 2.5L Jetta 5 cylinder, 5 spd, super turbo, see thread in H2O Cooled Jetta, etc...
83.5 Vanagon L Riviera Model with 98 1.9L TD AAZ 4 speed Daily Driver 3 out of 4 seasons (sold)
84 Vanagon GL Wolfsburg Westy WBX 4 speed (sold)
Last edited by DAIZEE on Thu Oct 14, 2010 2:05 pm; edited 2 times in total |
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madspaniard
Samba Member
Joined: August 18, 2008
Posts: 3795
Location: Alameda, CA
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| Posted: Thu Oct 14, 2010 1:36 pm Post subject: |
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| Destructo wrote: |
The only direct contact that my pipes have with any other metallic surface is the frame of the vehicle.
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from the link above
| Quote: |
| (or connected to via an electrolyte - such as coolant) |
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1991 Westy auto w/ Peloquin TBD
"The only difference between me and a madman is that I'm not mad” - Salvador Dali |
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tclark
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Joined: November 21, 2005
Posts: 926
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| Posted: Thu Oct 14, 2010 1:42 pm Post subject: |
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I guess the real issue is how long does this take to really start to corrode aluminum / cast iron internal parts & then cant this be controlled by just putting a sacrificial zinc strip in the overflow reservoir
There was another thread a a year ago about this same issue
i post a link when i find it
hmmm found it
http://www.thesamba.com/vw/forum/viewtopic.php?t=396556
hmm more interesting it was 240Gordy post as well
he must be bored today  I guess he's at work posting to samba
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89 Westy with TDI AHU 1.9 manual lots of mods
85 GL 1.9, auto (for sold)
Last edited by tclark on Thu Oct 14, 2010 1:46 pm; edited 1 time in total |
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madspaniard
Samba Member
Joined: August 18, 2008
Posts: 3795
Location: Alameda, CA
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| Posted: Thu Oct 14, 2010 1:45 pm Post subject: |
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| tclark wrote: |
by just putting a sacrificial zinc strip in the overflow reservoir
There was another thread a a year ago about this same issue
i post a link when i find it |
that was the proposed solution in the thread you are looking for but threaded directly in the SS pipes
_________________
1991 Westy auto w/ Peloquin TBD
"The only difference between me and a madman is that I'm not mad” - Salvador Dali
Last edited by madspaniard on Thu Oct 14, 2010 2:02 pm; edited 1 time in total |
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MarkWard
Samba Member
Joined: February 09, 2005
Posts: 18519
Location: Retired South Florida
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| Posted: Thu Oct 14, 2010 1:45 pm Post subject: |
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madspaniard
Samba Member
Joined: August 18, 2008
Posts: 3795
Location: Alameda, CA
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| Posted: Thu Oct 14, 2010 1:49 pm Post subject: |
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..
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1991 Westy auto w/ Peloquin TBD
"The only difference between me and a madman is that I'm not mad” - Salvador Dali
Last edited by madspaniard on Thu Oct 14, 2010 2:02 pm; edited 1 time in total |
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Rhinoculips
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Joined: August 08, 2005
Posts: 918
Location: Keystone, Colorado
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| Posted: Thu Oct 14, 2010 1:57 pm Post subject: |
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Can't wait to hear TK's take on this one..........
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Last edited by Rhinoculips on Thu Oct 14, 2010 2:04 pm; edited 1 time in total |
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DAIZEE
Samba Member
Joined: January 26, 2010
Posts: 7552
Location: Greater Toronto Area Ontario West Side
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| Posted: Thu Oct 14, 2010 1:57 pm Post subject: |
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sailboats have a shaft before the prop and they use a split zinc(?) mount that can be easily replaced whenever. It does the eroding rather than the shaft. I'm sure this is much the same except the van possibly has a higher electrolyte solution but then boat engines also have coolant.
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'09 2.5L Jetta 5 cylinder, 5 spd, super turbo, see thread in H2O Cooled Jetta, etc...
83.5 Vanagon L Riviera Model with 98 1.9L TD AAZ 4 speed Daily Driver 3 out of 4 seasons (sold)
84 Vanagon GL Wolfsburg Westy WBX 4 speed (sold) |
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GeorgeL
Samba Member
Joined: January 16, 2006
Posts: 7346
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| Posted: Thu Oct 14, 2010 2:06 pm Post subject: |
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| Destructo wrote: |
So my question to those who understand this phenomenon better than I:
My new SS pipes don't have metal to metal contact with the engine, Radiator or heater cores. Why should this worry me?
The only direct contact that my pipes have with any other metallic surface is the frame of the vehicle.
Something tells me that the sky is not falling yet. |
For corrosion to take place there has to be a complete metal-electrolyte-metal circuit and the two dissimilar metals must be electrically connected to each other. This forms a battery and the current will erode the more sacrificial metal. Aluminum is high on the sacrificial list. Only zinc and magnesium are higher, which is why sacrificial anodes are made of these metals.
However, break the circuit and nothing will corrode. If your coolant pipes are isolated from the frame by rubber or plastic and do not make metal-metal contact with anything at the ends you won't get corrosion.
The other important thing is the composition of the electrolyte. Coolant and distilled water won't carry much current, but tap water makes the situation worse. |
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BushChicken
Samba Member
Joined: March 11, 2010
Posts: 250
Location: California
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| Posted: Thu Oct 14, 2010 2:10 pm Post subject: |
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In my opinion this whole argument is much ado about nothing.
Coolant is designed to prevent galvanic corrosion of your engine components. Just change your coolant at regular intervals and use distilled water and you have nothing to worry about. |
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240Gordy
Samba Member
Joined: May 15, 2008
Posts: 2354
Location: Vancouver, BC
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| Posted: Thu Oct 14, 2010 2:46 pm Post subject: |
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This appeared. Onthe Subaru list today wth the link to the Article by Richard Jones , just go to his site if the link doen,t work.
I would like to see the heads and water jacket interfaces of an
van that has run these pipes for a while. I know the coolant passages of my engine were corroded without the added risk of this material
why add complexity with zincs, etc?
_________________
Tencentlife said,
"So, now that you know what you're doing, go to town."
2010 GOLF TRENDLINE 2.5
1985 GL now with more! a 2.1L
H&R SPORT(RED) Springs FRONT , SLAM SPECIALTIES RE6 AIRBAGS REAR |
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240Gordy
Samba Member
Joined: May 15, 2008
Posts: 2354
Location: Vancouver, BC
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| Posted: Thu Oct 14, 2010 2:54 pm Post subject: |
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Please explain me how the low coolant sensor
works if the coolant is not conductive?
_________________
Tencentlife said,
"So, now that you know what you're doing, go to town."
2010 GOLF TRENDLINE 2.5
1985 GL now with more! a 2.1L
H&R SPORT(RED) Springs FRONT , SLAM SPECIALTIES RE6 AIRBAGS REAR |
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Rocky Mountain Westy
Samba Member
Joined: April 17, 2008
Posts: 1032
Location: Fort Collins Colorado
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| Posted: Thu Oct 14, 2010 2:55 pm Post subject: |
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I have one thing to say in this conversation. If someone wants coolant pipes with a annode, I will make them. It is easy. Add $75 to the cost of your coolant pipes. Don't turn this thread into a "Wow $75 bucks is a lot extra" either. It is custom stuff and it takes extra time.
I will leave the controversy to all the others that will explain why this isn't really a problem.
Thanks for all the support from the Samba.
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www.rockymountainwesty.com
970-310-3441
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The Splitzgauer build (when I have time to work on it and update the thread)
http://www.thesamba.com/vw/forum/viewtopic.php?t=497133 |
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DAIZEE
Samba Member
Joined: January 26, 2010
Posts: 7552
Location: Greater Toronto Area Ontario West Side
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| Posted: Thu Oct 14, 2010 3:07 pm Post subject: |
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Well said. With a history of more than 30 years this can't be an issue with any VW normal use vehicle. Scientists and theoretical physicists like to going into finit detail!
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'09 2.5L Jetta 5 cylinder, 5 spd, super turbo, see thread in H2O Cooled Jetta, etc...
83.5 Vanagon L Riviera Model with 98 1.9L TD AAZ 4 speed Daily Driver 3 out of 4 seasons (sold)
84 Vanagon GL Wolfsburg Westy WBX 4 speed (sold) |
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?Waldo?
Samba Member
Joined: February 22, 2006
Posts: 9907
Location: Where?
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| Posted: Thu Oct 14, 2010 3:10 pm Post subject: |
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Daizee, I'm not sure where the 30 years is coming from, but none of the stock coolant pipes were stainless and corrosion of the aluminum parts of the engine, most notably the cylinder heads, HAS been one of the biggest problems with the vanagons.
Last edited by ?Waldo? on Thu Oct 14, 2010 3:14 pm; edited 1 time in total |
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DAIZEE
Samba Member
Joined: January 26, 2010
Posts: 7552
Location: Greater Toronto Area Ontario West Side
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| Posted: Thu Oct 14, 2010 3:13 pm Post subject: |
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Sorry I was trying to be succinct. as in any vehicle that may have used SS. I don't think its an issue. that's all.
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'09 2.5L Jetta 5 cylinder, 5 spd, super turbo, see thread in H2O Cooled Jetta, etc...
83.5 Vanagon L Riviera Model with 98 1.9L TD AAZ 4 speed Daily Driver 3 out of 4 seasons (sold)
84 Vanagon GL Wolfsburg Westy WBX 4 speed (sold) |
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PDXWesty
Samba Member
Joined: April 11, 2006
Posts: 6342
Location: Portland OR
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| Posted: Thu Oct 14, 2010 3:33 pm Post subject: |
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| DAIZEE wrote: |
| Sorry I was trying to be succinct. as in any vehicle that may have used SS. I don't think its an issue. that's all. |
I don't think Ive ever seen SS coolant piping in any vehicle. I have seen SS exhaust.
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89 Westy 2.1 Auto |
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