Home » Public Forums » GMCnet » Frame Corrosion Prevention (Or at least slowing it down)
Frame Corrosion Prevention [message #262630] |
Tue, 23 September 2014 12:21  |
Brian C
 Messages: 8 Registered: September 2014 Location: Cincinnati, Ohio
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Howdy folks,
I live in Ohio, well inside the salt belt. I don't have a MH yet, but I'm actively looking. One question I have, is if there is anything an owner can do to minimize corrosion of the frame, assuming you start with a good one? An obvious item is to wash the underbody after traveling during salt season, but are there any underbody coatings, sacrificial anodes, etc, that data supports? For as well as the GMC's seem to hold up, it seems a shame not to help the frame along.
I tried searching the forums, but didn't find anything. Feel free to point me to an existing thread.
Thanks,
Brian Cooper
Monroe, OH
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Re: Frame Corrosion Prevention [message #262632 is a reply to message #262630] |
Tue, 23 September 2014 12:40   |
C Boyd
 Messages: 2629 Registered: April 2006
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Sir: if you got rust bout all you can do is replace. Some instances you might could plate it. Keep an eye on the batteries which are over the r front frame rail. The original type buzz box converters would over charge the batteries if left plugged in all the time. Acid would boil out and down on the frame and start the rust process. I try to power rinse all I can every time I wash it. If just surface rust Marhide and others sell a rust converter that suppose to stop and seal the area. Some folks use POR 15? for frame paint. Tough stuff. Like a old Harley, Oily is your friend against rust.
Brian C wrote on Tue, 23 September 2014 13:21Howdy folks,
I live in Ohio, well inside the salt belt. I don't have a MH yet, but I'm actively looking. One question I have, is if there is anything an owner can do to minimize corrosion of the frame, assuming you start with a good one? An obvious item is to wash the underbody after traveling during salt season, but are there any underbody coatings, sacrificial anodes, etc, that data supports? For as well as the GMC's seem to hold up, it seems a shame not to help the frame along.
I tried searching the forums, but didn't find anything. Feel free to point me to an existing thread.
Thanks,
C. Boyd
76 Crestmont
East Tennessee
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Re: Frame Corrosion Prevention [message #262633 is a reply to message #262632] |
Tue, 23 September 2014 12:41   |
C Boyd
 Messages: 2629 Registered: April 2006
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C Boyd wrote on Tue, 23 September 2014 13:40Sir: if you got rust bout all you can do is replace. Some instances you might could plate it. Keep an eye on the batteries which are over the r front frame rail. The original type buzz box converters would over charge the batteries if left plugged in all the time. Acid would boil out and down on the frame and start the rust process. I try to power rinse all I can every time I wash it. If just surface rust Marhide and others sell a rust converter that suppose to stop and seal the area. Some folks use POR 15? for frame paint. Tough stuff. Like a old Harley, Oily is your friend against rust.
http://www.gmcmhphotos.com/photos/member-galleries/p44899-rusty-frame.html
this one was from New Jersey.
Brian C wrote on Tue, 23 September 2014 13:21Howdy folks,
I live in Ohio, well inside the salt belt. I don't have a MH yet, but I'm actively looking. One question I have, is if there is anything an owner can do to minimize corrosion of the frame, assuming you start with a good one? An obvious item is to wash the underbody after traveling during salt season, but are there any underbody coatings, sacrificial anodes, etc, that data supports? For as well as the GMC's seem to hold up, it seems a shame not to help the frame along.
I tried searching the forums, but didn't find anything. Feel free to point me to an existing thread.
Thanks,
C. Boyd
76 Crestmont
East Tennessee
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Re: Frame Corrosion Prevention [message #262639 is a reply to message #262630] |
Tue, 23 September 2014 14:13   |
Keith V
 Messages: 2337 Registered: March 2008 Location: Mounds View,MN
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Brian C wrote on Tue, 23 September 2014 12:21Howdy folks,
I live in Ohio, well inside the salt belt. I don't have a MH yet, but I'm actively looking. One question I have, is if there is anything an owner can do to minimize corrosion of the frame, assuming you start with a good one? An obvious item is to wash the underbody after traveling during salt season, but are there any underbody coatings, sacrificial anodes, etc, that data supports? For as well as the GMC's seem to hold up, it seems a shame not to help the frame along.
I tried searching the forums, but didn't find anything. Feel free to point me to an existing thread.
Thanks,
Paint helps, as does not driving in the winter.
I live in Minnesota and while I have surface rust it's still plenty solid ( crosses fingers )
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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Re: [GMCnet] Frame Corrosion Prevention [message #262640 is a reply to message #262630] |
Tue, 23 September 2014 14:18   |
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ljdavick
 Messages: 3548 Registered: March 2007 Location: Fremont, CA
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Well if it comes to it, and you need to replace your frame, Dan Stuckey makes galvanized replacements.
Larry Davick
Fremont, California
A Mystery Machine
'76 (ish) Palm Beach
----- Original Message -----
From: "Brian Cooper"
To: gmclist@temp.gmcnet.org
Sent: Tuesday, September 23, 2014 10:21:26 AM
Subject: [GMCnet] Frame Corrosion Prevention
Howdy folks,
I live in Ohio, well inside the salt belt. I don't have a MH yet, but I'm actively looking. One question I have, is if there is anything an owner
can do to minimize corrosion of the frame, assuming you start with a good one? An obvious item is to wash the underbody after traveling during salt
season, but are there any underbody coatings, sacrificial anodes, etc, that data supports? For as well as the GMC's seem to hold up, it seems a shame
not to help the frame along.
I tried searching the forums, but didn't find anything. Feel free to point me to an existing thread.
Thanks,
--
Brian Cooper
Monroe, OH
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
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Re: [GMCnet] Frame Corrosion Prevention [message #262645 is a reply to message #262642] |
Tue, 23 September 2014 14:52   |
powerjon
 Messages: 2446 Registered: January 2004
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When we bought our first GMC the lady that we bought it from always got under coach with a spray bottle of ATF, automatic Transmission Fluid and spray the frame rails from front to back. I know of many other GMCers that still do that today including me on the stretch coach. Prevents the rusty areas from rusting further. Just what I have done, other may be different.
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On Sep 23, 2014, at 3:33 PM, Larry Davick wrote:
> Tom Hampton was a fan of POR 15 when I picked up my coach so many years ago. I've heard good things about it, but living in the San Francisco Bay Area I'm not really subject to much rust.
>
> Larry Davick
> Fremont, California
> A Mystery Machine
> '76 (ish) Palm Beach
>
> ----- Original Message -----
> From: "Charles Boyd"
> To: gmclist@temp.gmcnet.org
> Sent: Tuesday, September 23, 2014 10:40:23 AM
> Subject: Re: [GMCnet] Frame Corrosion Prevention
>
> Sir: if you got rust bout all you can do is replace. Some instances you might could plate it. Keep an eye on the batteries which are over the r
> front frame rail. The original type buzz box converters would over charge the batteries if left plugged in all the time. Acid would boil out and
> down on the frame and start the rust process. I try to power rinse all I can every time I wash it. If just surface rust Marhide and others sell a
> rust converter that suppose to stop and seal the area. Some folks use POR 15? for frame paint. Tough stuff. Like a old Harley, Oily is your friend
> against rust.
>
> C. Boyd
> 76 Crestmont
> East Tennessee
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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Re: Frame Corrosion Prevention [message #262650 is a reply to message #262630] |
Tue, 23 September 2014 16:18   |
GeorgeRud
 Messages: 1380 Registered: February 2007 Location: Chicago, IL
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Though messy, I think POR-15 would be the best, however in wonder if some plain old brushed on Rustoleum wouldn't be enough. Just keeping it clean with a good pressure washer would help to wash down any salt spray.
George Rudawsky
Chicago, IL
75 Palm Beach
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Re: [GMCnet] Frame Corrosion Prevention [message #262654 is a reply to message #262645] |
Tue, 23 September 2014 17:03   |
winter
 Messages: 247 Registered: September 2007 Location: MPLS MN
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powerjon wrote on Tue, 23 September 2014 14:52When we bought our first GMC the lady that we bought it from always got under coach with a spray bottle of ATF, automatic Transmission Fluid and spray the frame rails from front to back. I know of many other GMCers that still do that today including me on the stretch coach. Prevents the rusty areas from rusting further. Just what I have done, other may be different.
So my leaking tranny pan has a benefit.
Jerrod Winter
1977 Palm Beach
Green Jelly Bean
Twin Cities, Minnesota
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Re: [GMCnet] Frame Corrosion Prevention [message #262678 is a reply to message #262654] |
Tue, 23 September 2014 20:02   |
Kingsley Coach
 Messages: 2691 Registered: March 2009 Location: Nova Scotia Canada
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Brian
Nova Scotia on the Atlantic coast is the rust capital of earth. Salt on the
roads in winter and salt in the air!
For rust prevention generally people undercoat their cars when new...or
wait until rust starts and attempt to prevent further rot!
For the more economically minded in a land of Scotsmen, spraying
transmission fluid with an old spray gun is common. For the boxed areas a
long piece of copper tubing is attached to the spray bottle, sprayer, or
undercoating gun.
Transmission fluid has the advantage of Not eating away rubber parts in the
rust prevention process. Products like waste oil and many commercial
disintegrate rubber.
Recently 'Fluid Film' has become popular and since it is Lanolin based no
rubber disintegration!
Mike in NS
On Tue, Sep 23, 2014 at 7:03 PM, jerrod winter wrote:
> powerjon wrote on Tue, 23 September 2014 14:52
>> When we bought our first GMC the lady that we bought it from always got
> under coach with a spray bottle of ATF, automatic Transmission Fluid and
>> spray the frame rails from front to back. I know of many other GMCers
> that still do that today including me on the stretch coach. Prevents the
>> rusty areas from rusting further. Just what I have done, other may be
> different.
>
>
> So my leaking tranny pan has a benefit.
> --
> Jerrod Winter
> 1977 Palm Beach
> Green Jelly Bean
> Twin Cities, Minnesota
> _______________________________________________
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> Unsubscribe or Change List Options:
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--
Michael Beaton
1977 Kingsley 26-11
1977 Eleganza II 26-3
Antigonish, NS
I am not an alcoholic; alcoholics go to meetings.
I am a drunk; I go to parties !
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Re: Frame Corrosion Prevention [message #262685 is a reply to message #262630] |
Tue, 23 September 2014 21:27   |
Brian C
 Messages: 8 Registered: September 2014 Location: Cincinnati, Ohio
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All good ideas. I like the idea of simply not driving in salty conditions. It hadn't occured to me, in spite of its simplicity. Unfortunately, my wife is from Minneapolis, and guess where we always head for Christmas? Somebody has to hold the top of the earth down while all the snowbirds head south for the winter...
Seriously, thanks all for the practical solutions.
Brian Cooper
Monroe, OH
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Re: Frame Corrosion Prevention [message #262688 is a reply to message #262630] |
Tue, 23 September 2014 21:40   |
lqqkatjon
 Messages: 2324 Registered: October 2010 Location: St. Cloud, MN
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I still have a hard time imagining driving my GMC on a snow covered or icy road. I live in MN, and my GMC is in my driveway year round, ready to go.... but I have not tried it on the ice, and just don't want to. And I drive plenty of rigs around on roads when I should of stayed home. and yep, there is rust on my frame, but from what I can see, it is surface rust, it is all pretty solid. I will probably just keep cleaning it, maybe por15 it someday, and if it rusts to a point, I will weld on it, till it breaks in half. But I think that will not be in my lifetime. I think you need to keep an eye on it. I do try to do what i can to rinse it off, but usually if it gets near salty roads, it is cold, and spraying water all over the frame is not something that can be done at those temps well outdoors.
por15 is the most widely used, it is some really good stuff, and I think if you use it on your frame, it probably will do the job you want, and protect a long time. But trying to get it inside and on everything could be a trick, plus it is not cheap. Jim Bounds I have noticed uses that product.
there are other similar and same products out there, Chassis black, ospho, and a few others.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
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Re: Frame Corrosion Prevention [message #262709 is a reply to message #262630] |
Wed, 24 September 2014 07:10   |
g.winger
 Messages: 792 Registered: February 2008 Location: Warrenton,Missouri
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When I swapped the 403 for the 507 I pulled out the frame so I could rebuild the suspension and install the 1 ton. I decided to have the frame sandblasted so I wouldn't have to take the time to sand/wire wheel all the nooks and crannies. It wouldn't fit well on the 12' trailer so I flipped it up side down. A pile of rust poured out of the inside of the frame rails and onto the deck of the trailer,,,,and mine was a Ca/Tx coach!! Soooo,,,, galvanize!!! I did learn that whan you mark the center line of the engine with a 1/8 inch hole that it gets filled. If you mark the center with a hole make it at least 3/16ths!! I barely had a dimple. You also have to reame all the holes or you will shear the screws that hold the brake/fuel line clips,,,, or,,, I would grease them. that worked well. My grounds make really good contact with no rust!! I think it cost 350 bucks!!
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Re: Frame Corrosion Prevention [message #262720 is a reply to message #262709] |
Wed, 24 September 2014 08:58   |
Keith V
 Messages: 2337 Registered: March 2008 Location: Mounds View,MN
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My only problem wit POR 15 is it is only a mechanical bond tot he metal. that is fine over a rusty part but it doesn't hold well. A 2 part epoxy paint has a chemical adhesion to the metal and is much stronger.
It IS 2 part however and more difficult to apply.
350 to galvanize the front clip?
Thats pretty cool. I might have to do my 29 dodge frame someday
Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com
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Re: Frame Corrosion Prevention [message #262800 is a reply to message #262651] |
Thu, 25 September 2014 14:43   |
midlf
 Messages: 2212 Registered: July 2007 Location: SE Wisc. (Palmyra)
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mike miller wrote on Tue, 23 September 2014 16:21
There are several products like POR-15. I read about some on another forum (one of the 4x4 forums) and had a brand name figured out for my project Sidekick frame. (Best price and features for that use.) Now that I am getting close to needing it, I can't find the name!
Anyway, While about POR-15 the best you can do without disassembly, the problem with POR-15 type products is that it is hard to do the insides of of "almost closed in" frame parts. (On the GMC this would mostly be the front clip.) Hot dipping the front frame clip and other frame parts would be the ultimate for corrosion protection. Marc did his a while ago. (Now he lives in New Mexico... not a big rust belt!)
You may be thinking of Chassis Saver. I used it on my front clip. Then due to other circumstances pulled the front clip and had it sent out for chemical stripping and E-coat. The strippers did not like the Chassis Saver. It was a lot of extra work to get it off the frame compared to rust or regular paint.
I have used Eastwood internal frame coating. It goes on easily and covers well. I have not had enough experience to know how well it works.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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Re: Frame Corrosion Prevention [message #262801 is a reply to message #262630] |
Thu, 25 September 2014 14:57   |
midlf
 Messages: 2212 Registered: July 2007 Location: SE Wisc. (Palmyra)
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One big problem with any paint type products is it will not get into where it is really needed. Most serious is the area between the bogie sub-frame and the main frame rails. The other is inside the front clip. There can be so much rust inside the front clip that the Eastwood internal frame coating cannot get to the metal. And this was after extensive blasting out with an air hose with a long reach nozzle and vacuuming.
See here (note, not mine) http://www.gmcmhphotos.com/photos/showfull.php?photo=25942
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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Re: [GMCnet] Frame Corrosion Prevention [message #262803 is a reply to message #262640] |
Thu, 25 September 2014 15:07   |
Ray Erspamer
 Messages: 1707 Registered: May 2007 Location: Milwaukee Wisconsin
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No chance of corrosion if you have a few oil leaks like I do.
Sent on a Sprint Samsung Galaxy S® III
-------- Original message --------From: Steve Southworth Date:09/25/2014 2:43 PM (GMT-06:00) To: gmclist@temp.gmcnet.org Subject: Re: [GMCnet] Frame Corrosion Prevention
mike miller wrote on Tue, 23 September 2014 16:21
> There are several products like POR-15. I read about some on another forum (one of the 4x4 forums) and had a brand name figured out for my
> project Sidekick frame. (Best price and features for that use.) Now that I am getting close to needing it, I can't find the name!
>
> Anyway, While about POR-15 the best you can do without disassembly, the problem with POR-15 type products is that it is hard to do the insides of
> of "almost closed in" frame parts. (On the GMC this would mostly be the front clip.) Hot dipping the front frame clip and other frame parts would
> be the ultimate for corrosion protection. Marc did his a while ago. (Now he lives in New Mexico... not a big rust belt!)
You may be thinking of Chassis Saver. I used it on my front clip. Then due to other circumstances pulled the front clip and had it sent out for
chemical stripping and E-coat. The strippers did not like the Chassis Saver. It was a lot of extra work to get it off the frame compared to rust or
regular paint.
I have used Eastwood internal frame coating. It goes on easily and covers well. I have not had enough experience to know how well it works.
--
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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Ray Erspamer
78 GMC Royale Center Kitchen
403, 3.70 Final Drive
Holley Sniper Quadrajet EFI System,
Holley Hyperspark Ignition System
414-484-9431
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