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montanasurfer Samba Member
Joined: March 06, 2014 Posts: 319 Location: United States
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Posted: Wed Jan 19, 2022 2:22 pm Post subject: Ultimate Ground Solution - Anyone modernize grounds? |
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Hello Folks,
Has anyone devised a way to definitively clean, seal, and mount grounds? I'm talking about:
- Replacing the eyelet grounds in the engine bay with something sealed and hard mounted.
- Any creative solution for the engine ground strap and the trans ground strap.
- Replacing the two ground tree's under the dash with some kind of sealed connector.
I am growing weary of cleaning/cutting and crimping on new eyelets/ replacing ground straps. It would be nice to have this done and done so in a way that lasts more than a few years. Plus cutting the wires to replace the eyelets is going to eventually lead to needing to splice longer lengths of wires onto the original wire.
Any thoughts? Has anyone done an update to modernize grounds? If so, can you share what you did and how maintenance free it has been? [/list] _________________ 1987 Vanagon GL - Wolfsburg Edition |
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bobhill8 Samba Member
Joined: June 09, 2017 Posts: 737 Location: MA
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Posted: Wed Jan 19, 2022 5:41 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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Sodo will be along any minute _________________ 1986 Westy
1971 Squareback |
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Zeitgeist 13 Samba Member
Joined: March 05, 2009 Posts: 12115 Location: Port Manteau
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Posted: Wed Jan 19, 2022 5:43 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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Bad grounds burn up bearings
A couple of properly mounted bus bars would do the trick. The ground crowns under the dash would be where I start. _________________ Casey--
'89 Bluestar ALH w/12mm Waldo pump, PP764 and GT2052
'01 Weekender --> full camper
y u rune klassik? |
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Vanagon Nut Samba Member
Joined: February 08, 2008 Posts: 10379 Location: Sunshine Coast B.C.
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Posted: Wed Jan 19, 2022 5:55 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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Wrong or right, I scraped back the paint under the ground stars. I also cleaned up each male contact though they weren't too bad. I swear my wipers move faster and dash lights are brighter.
Neil.
This is what the paint under each ground star near fuse panel looked like. I assume this is "factory". Rain water was likely getting in which likely fouled the screw threads. The bottom of each star has pointed bits that afaik, are supposed to bite past paint into metal. Each screw was pretty damn tight.
_________________ 1981 Westy DIY 15º ABA
1988 West DIY 50º ABA
VE7TBN |
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slo356 Samba Member
Joined: February 18, 2002 Posts: 365 Location: Central Calif Coast
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Posted: Wed Jan 19, 2022 6:36 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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I converted the anchor bolts for grounding to anchor studs in the engine compartment. A stud with a nut to secure the eyelets is a lot easier to deal with when you maintenance the grounds. Also, you gain a little bit more grounding surface.
I cleaned the wheel well side of the captured nut.
A lot of the grounding finds ground through the threads so cleaning up with a tap was important. Note corroded eyelet that needs to be replaced.
Inserted 6mm x 30mm bolts with star washers. Will paint later to protect from corrosion.
On the inside a flat washer and nut secured/tightened after removing paint for more direct grounding surface. This nut acts as a "jam-nut" to secure the bolt from spinning when you remove the outer nut to clean the eyelets.
Much easier checkout ,remove and clean or replace eyelets.
Don't know if there is a way to permanently protect from corrosion...unless you go with gold or silver. _________________ '65 T1 Sedan
'87 T3 Syncro
Last edited by slo356 on Wed Jan 19, 2022 11:46 pm; edited 2 times in total |
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mikemtnbike Samba Member
Joined: March 26, 2015 Posts: 2797 Location: North Carolina
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Posted: Wed Jan 19, 2022 6:55 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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For my aux battery system, I sanded to bare per a normal sheet metal drill-and-ground addition but also installed a riv-nut instead of just doing bolt, washer, nut.
I really really like this. In every way, it's a solider connection. I did my alt-to-ground addition using regular hardware and would re-do using a riv-nut if the opportunity arose. _________________ 1991 Vanagon GL 2.1 AT Westfauxlia. "Frankie" Totaled https://www.thesamba.com/vw/forum/viewtopic.php?t=764510&highlight=carnage
1995 Eurovan Camper "Marzivan"
2020 GTI SE manual |
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Sodo Samba Member
Joined: July 06, 2007 Posts: 9617 Location: Western WA
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Posted: Wed Jan 19, 2022 7:46 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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Zeitgeist 13 wrote: |
Bad grounds burn up bearings |
Bearings can pass starter amperage for years.
It doesn't cause immediate failure.
And what are unexplained starter problems - if not endearing?
If forums discovered everything, there would be nothing to talk about after 10, 15 years.
-----------------
I put in a new rebuilt transaxle in 2016.
Discovered grounding problems in 2018, and added a proper ground at that time (so 2 years of bad grounding thru the transaxle).
The trans lasted 20,000 miles after that, (making bearing noise in 2021)
But this is the transaxle ground path, not the ground tree under the dash. _________________
'90 Westy EJ25, 2Peloquins, 3knobs, pressure-oiled GT mainshaft, filtered, cooled gearbox
'87 Tintop w 47k 53k, '12 SmallCar EJ25, cooled filtered gearbox
....KTMs, GasGas, SPOT mtb
Last edited by Sodo on Tue Jan 25, 2022 12:06 pm; edited 1 time in total |
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ALIKA T3 Samba Member
Joined: July 30, 2009 Posts: 6360 Location: Honolulu,Hawaii and France
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50352
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Posted: Wed Jan 19, 2022 9:41 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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I smear most all ground connections with dielectric grease prior to assembly and maybe add some more after everything is back together. |
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slo356 Samba Member
Joined: February 18, 2002 Posts: 365 Location: Central Calif Coast
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Posted: Wed Jan 19, 2022 10:48 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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ALIKA T3 wrote: |
slo356 wrote: |
I converted the anchor bolts for grounding to anchor studs in the engine compartment.
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Put stainless bolts at least |
Thanks AlikaT3, I originally was going all stainless steel hardware (~$15us for 2-bolts, 6-nuts and 6-washers) but checked conductivity ratings. Cad-plated steel transports electricity a bit better than stainless steel, so I went cad-plated rather than stainless. _________________ '65 T1 Sedan
'87 T3 Syncro |
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Beerden Samba Member
Joined: June 25, 2012 Posts: 11 Location: Salmon Arm, BC, Canada
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Posted: Thu Jan 20, 2022 1:24 am Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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slo356 wrote: |
ALIKA T3 wrote: |
slo356 wrote: |
I converted the anchor bolts for grounding to anchor studs in the engine compartment.
... |
Put stainless bolts at least |
Thanks AlikaT3, I originally was going all stainless steel hardware (~$15us for 2-bolts, 6-nuts and 6-washers) but checked conductivity ratings. Cad-plated steel transports electricity a bit better than stainless steel, so I went cad-plated rather than stainless. |
I concur!
I too converted grounds to stainless steel studs (use a bolt of generous length), with stainless washers as separators and stainless double nuts at the end of the stud. Everything is coated with dielectric silicon grease, especially in the engine compartment.
Before the studs were put in, I thread tapped the holes to clean out the rust and put a gob of that grease in the holes before threading in the post.
There was a noticeable improvement in everything electrical including engine reliability after doing this. _________________ 1987 Syncro Westy Canadian model body and interior restored. Color change, was Flash Silver Metallic (LP7Y) and is now Tungsten (Wolfram) Gray Metallic (LH7V) with charcoal carpet instead of grey carpet. White poptop and original grey canvas. Inherited it in very denty condition from my grandfather who drove it until he was 90. |
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syncrodoka Samba Member
Joined: December 27, 2005 Posts: 12007 Location: Santa Cruz, CA
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Posted: Thu Jan 20, 2022 2:11 am Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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The wbx engine grounds are a known weakness on the system, well maintained grounds are critical. Stainless galling and galvanic corrosion are real. The stainless hardware are soft and will shear but be very difficult to drill due to it's properties, zinc coated hardware are best used for the job. |
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montanasurfer Samba Member
Joined: March 06, 2014 Posts: 319 Location: United States
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Posted: Thu Jan 20, 2022 10:06 am Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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slo356 wrote: |
I converted the anchor bolts for grounding to anchor studs in the engine compartment. A stud with a nut to secure the eyelets is a lot easier to deal with when you maintenance the grounds. Also, you gain a little bit more grounding surface.
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This looks like something I need to do for the grounds in the engine bay!
I'm looking for the overkill approach here. Would it be stupid to run all the wires through one of these style of rubber boots (https://www.amazon.com/dp/B08BL4S5YJ/ref=wl_mb_wl_huc_mrai_2_dp), crimp on new eyelets, fill the boot with dielectric grease and stretch it over the nut at the base of the stud? _________________ 1987 Vanagon GL - Wolfsburg Edition |
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sanchius Samba Member
Joined: May 03, 2007 Posts: 1455 Location: IN
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Posted: Thu Jan 20, 2022 11:13 am Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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Great info here.
Just a quick note that dielectric grease is non-conductive silicone grease for protecting the outside of terminals and connections from corrosion.
My understanding is that using it between contacts can result in poor connections. YMMV
Naturally, one can find a wide spectrum of opinions about this on the interwebs. _________________ The Syncro years (2005-16) - The 2WD years (2017-23) - Westy & WBX rebuild spreadsheet - Sanchius & Tuna: The Video
Your gold star membership keeps this awesome list going! |
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montanasurfer Samba Member
Joined: March 06, 2014 Posts: 319 Location: United States
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Posted: Thu Jan 20, 2022 11:28 am Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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sanchius wrote: |
Great info here.
Just a quick note that dielectric grease is non-conductive silicone grease for protecting the outside of terminals and connections from corrosion.
My understanding is that using it between contacts can result in poor connections. YMMV
Naturally, one can find a wide spectrum of opinions about this on the interwebs. |
So the best bet would be to assemble everything and then smother it all in dielectric grease and then stretch on the grease filled boot. _________________ 1987 Vanagon GL - Wolfsburg Edition |
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Sodo Samba Member
Joined: July 06, 2007 Posts: 9617 Location: Western WA
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Posted: Thu Jan 20, 2022 11:45 am Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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sanchius wrote: |
Just a quick note that dielectric grease is non-conductive silicone grease |
Agreed it sounds like strange thing to put on a 'conductive connection'. But the name just means it can't "leak" current to other pins (perhaps inside a connector).
Or another example, if you put dielectric grease on a 1.5v AA battery terminal, you can know that it won't leak current to the battery's case thus draining the battery.
It's a litle bit unfortunate (for our purposes here) that it sounds like it "impedes connection".
Air is non-conductive as well for example.
The tightened nut presses the metal together for current flow.
Putting dielectric grease in the connection fills all the voids, even excluding air, and more importantly,
ensuring that moisture-laden air water or water has no place to 'hang out' inside your connection.
...and cause corrosion that disrupts the metal-to-metal connection.
Grounds are not all that complicated.
They should be simple, direct, home-runs, of similar size to the 12v+ part of the path..
Daisy-chaining groundconnection-to-groundconnection-to groundconnection can work but is considered 'bad form'.
But if its inspectable, maintainable, and a 100% connection, extra connections can be dealt with.
You cannot get better than 100%.
Choosing a dry location that is easily inspectable, easy to restore to 100%. _________________
'90 Westy EJ25, 2Peloquins, 3knobs, pressure-oiled GT mainshaft, filtered, cooled gearbox
'87 Tintop w 47k 53k, '12 SmallCar EJ25, cooled filtered gearbox
....KTMs, GasGas, SPOT mtb
Last edited by Sodo on Tue Jan 25, 2022 12:12 pm; edited 1 time in total |
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Wildthings Samba Member
Joined: March 13, 2005 Posts: 50352
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Posted: Thu Jan 20, 2022 3:07 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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sanchius wrote: |
Great info here.
Just a quick note that dielectric grease is non-conductive silicone grease for protecting the outside of terminals and connections from corrosion.
My understanding is that using it between contacts can result in poor connections. YMMV
Naturally, one can find a wide spectrum of opinions about this on the interwebs. |
Still waiting for this fake information to rear its ugly head, beings as how I have been using grease dielectric or otherwise for 40+ years at this point, I don't think I am apt to live long enough to ever witness it happening. If you have some kind of plugs in low voltage-low amperage connection where the pressures between mating contacts are very low like the plugs for the AFM or ECU, you might want to use something out of a spray can from an electrical supply house, but for any kind of connection with decent pressures the chances of dielectric grease preventing contact is very low. |
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Zeitgeist 13 Samba Member
Joined: March 05, 2009 Posts: 12115 Location: Port Manteau
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Posted: Thu Jan 20, 2022 3:39 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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I believe the silicone is just filling existing voids in the connectors to keep out moisture and air. An electrical contact would still provide a direct conductor to conductor pathway in the same manner with or without the silicone filling the voids. I've been using it for decades without any detrimental effects I'm aware of at this time. _________________ Casey--
'89 Bluestar ALH w/12mm Waldo pump, PP764 and GT2052
'01 Weekender --> full camper
y u rune klassik? |
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dhaavers Samba Member
Joined: March 19, 2010 Posts: 7757 Location: NE MN (tinyurl.com/dhaaverslocation)
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Posted: Thu Jan 20, 2022 9:26 pm Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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Beautiful!
- Dave _________________ 86 White Wolfsburg Westy Weekender
"The WonderVan"
<EDITED TO PROTECT INNOCENT PIXELS> |
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djkeev Samba Moderator
Joined: September 30, 2007 Posts: 32632 Location: Reading Pennsylvania
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Posted: Fri Jan 21, 2022 5:45 am Post subject: Re: Ultimate Ground Solution - Anyone modernize grounds? |
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The title of this thread makes me scratch my head.......
exactly what is a "Modern Ground"?
I did some wiring add on ti my late teens Prius awhile back.
The grounding method of choice?
Screw eyes on the wire ends and screws into the body.
I do wonder how wide spread VW's "ground tree" methodology is.
Anyway........
We have launched into cleaning and examining various methods of connecting grounds.
But a bolt, washers and nuts are hardly "modern".
Covering connections with a moisture barrier is far from modern too.
Even the suggestion of using "modern" alloys has pretty much been shot down.
Don't get me wrong, the thread is great!
The shiny clean connection porn photos are inspiring!
The title?
Not so much. 😂😂
Dave _________________ Stop Dead Photo Links how to post photos
Ghia
http://www.thesamba.com/vw/forum/viewtopic.php?t=392473
Vanagon
http://www.thesamba.com/vw/forum/viewtopic.php?p=6315537#6315537
Beetle
https://www.thesamba.com/vw/forum/viewtopic.php?t=482968&highlight=74+super+vert |
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