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Home » Public Forums » GMCnet » Frame Corrosion Prevention (Or at least slowing it down)
Frame Corrosion Prevention [message #262630] Tue, 23 September 2014 12:21 Go to next message
Brian C is currently offline  Brian C   United States
Messages: 8
Registered: September 2014
Location: Cincinnati, Ohio
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Junior Member
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
Re: Frame Corrosion Prevention [message #262632 is a reply to message #262630] Tue, 23 September 2014 12:40 Go to previous messageGo to next message
C Boyd is currently offline  C Boyd   United States
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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 13:21
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,



C. Boyd
76 Crestmont
East Tennessee
Re: Frame Corrosion Prevention [message #262633 is a reply to message #262632] Tue, 23 September 2014 12:41 Go to previous messageGo to next message
C Boyd is currently offline  C Boyd   United States
Messages: 2629
Registered: April 2006
Karma: 18
Senior Member
C Boyd wrote on Tue, 23 September 2014 13:40
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.

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 13:21
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,




C. Boyd
76 Crestmont
East Tennessee
Re: Frame Corrosion Prevention [message #262639 is a reply to message #262630] Tue, 23 September 2014 14:13 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
Messages: 2337
Registered: March 2008
Location: Mounds View,MN
Karma: 0
Senior Member
Brian C wrote on Tue, 23 September 2014 12:21
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,


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
Re: [GMCnet] Frame Corrosion Prevention [message #262640 is a reply to message #262630] Tue, 23 September 2014 14:18 Go to previous messageGo to next message
ljdavick is currently offline  ljdavick   
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
Senior Member
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
Re: [GMCnet] Frame Corrosion Prevention [message #262642 is a reply to message #262632] Tue, 23 September 2014 14:33 Go to previous messageGo to next message
ljdavick is currently offline  ljdavick   
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
Senior Member
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
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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
Re: [GMCnet] Frame Corrosion Prevention [message #262645 is a reply to message #262642] Tue, 23 September 2014 14:52 Go to previous messageGo to next message
powerjon is currently offline  powerjon   United States
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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:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist

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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
Re: Frame Corrosion Prevention [message #262650 is a reply to message #262630] Tue, 23 September 2014 16:18 Go to previous messageGo to next message
GeorgeRud is currently offline  GeorgeRud   United States
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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
Re: Frame Corrosion Prevention [message #262651 is a reply to message #262632] Tue, 23 September 2014 16:21 Go to previous messageGo to next message
mike miller   United States
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Registered: February 2004
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C Boyd wrote on Tue, 23 September 2014 10:40
... Some folks use POR 15? for frame paint. Tough stuff. Like a old Harley, Oily is your friend against rust.


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!)

http://www.gmcmhphotos.com/photos/data/3432/432_p4232.jpg

<http://www.gmcmhphotos.com/photos/restoration-and-diesel-conversion/p4232.html>

I personally like the idea of not driving in salty conditions and a periodic preventative spray of ATF.



Mike Miller -- Hillsboro, OR -- on the Black list
(#2)`78 23' Birchaven Rear Bath -- (#3)`77 23' Birchaven Side Bath
More Sidekicks than GMC's and a late model Malibu called 'Boo' http://m000035.blogspot.com
Re: [GMCnet] Frame Corrosion Prevention [message #262654 is a reply to message #262645] Tue, 23 September 2014 17:03 Go to previous messageGo to next message
winter is currently offline  winter   United States
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Registered: September 2007
Location: MPLS MN
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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
Re: [GMCnet] Frame Corrosion Prevention [message #262678 is a reply to message #262654] Tue, 23 September 2014 20:02 Go to previous messageGo to next message
Kingsley Coach is currently offline  Kingsley Coach   United States
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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
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>



--
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 Go to previous messageGo to next message
Brian C is currently offline  Brian C   United States
Messages: 8
Registered: September 2014
Location: Cincinnati, Ohio
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Junior Member
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
Re: Frame Corrosion Prevention [message #262688 is a reply to message #262630] Tue, 23 September 2014 21:40 Go to previous messageGo to next message
lqqkatjon is currently offline  lqqkatjon   United States
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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/
Re: Frame Corrosion Prevention [message #262709 is a reply to message #262630] Wed, 24 September 2014 07:10 Go to previous messageGo to next message
g.winger is currently offline  g.winger   United States
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Registered: February 2008
Location: Warrenton,Missouri
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Senior Member
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!!
Re: Frame Corrosion Prevention [message #262720 is a reply to message #262709] Wed, 24 September 2014 08:58 Go to previous messageGo to next message
Keith V is currently offline  Keith V   United States
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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
Re: [GMCnet] Frame Corrosion Prevention [message #262738 is a reply to message #262720] Wed, 24 September 2014 11:15 Go to previous messageGo to next message
Marsh Wilkes is currently offline  Marsh Wilkes   United States
Messages: 155
Registered: January 2004
Karma: -3
Senior Member

Not making any claims regarding a GMC frame, haven't tried it there, but I
have been using cold galvanizing for the last couple of years with very good
results. On projects outdoors with raw steel on gates, I just spray the raw
steel with cold galvanizing from spray cans. Although the coating is not
very tough, scrapes off easily, the metal still does not rust in the scrape
due to the sacrificial action of the nearby zinc. Research I did clamed it
had tested almost as good as hot galvanizing. It looks like a gray primer
when finished. I don’t know or have time to look, it may be available in
liquid form but here is a link to the product I have been using not the
supplier.
As with any coating getting it inside the front clip and between the rear
frame sections would be a neat trick.
Go on line do some research for yourself see what you think.

http://www.coxhardware.com/p-4032-cold-galvanizing-spray-crc-13-oz.aspx

Marsh (who never post anymore) Wilkes
Perry Florida

-----Original Message-----
From: Keith V
Sent: Wednesday, September 24, 2014 9:58 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] Frame Corrosion Prevention

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
69 Vette
29 Dodge
75 Royale GMC
Mounds View. MN
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Re: [GMCnet] Frame Corrosion Prevention [message #262746 is a reply to message #262738] Wed, 24 September 2014 14:09 Go to previous messageGo to next message
X   United States
Messages: 112
Registered: December 2012
Location:
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[Updated on: Fri, 17 October 2014 18:45]

Report message to a moderator

Re: Frame Corrosion Prevention [message #262800 is a reply to message #262651] Thu, 25 September 2014 14:43 Go to previous messageGo to next message
midlf is currently offline  midlf   United States
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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
Re: Frame Corrosion Prevention [message #262801 is a reply to message #262630] Thu, 25 September 2014 14:57 Go to previous messageGo to next message
midlf is currently offline  midlf   United States
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Location: SE Wisc. (Palmyra)
Karma: 1
Senior Member
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
Re: [GMCnet] Frame Corrosion Prevention [message #262803 is a reply to message #262640] Thu, 25 September 2014 15:07 Go to previous messageGo to previous message
Ray Erspamer is currently offline  Ray Erspamer   United States
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Registered: May 2007
Location: Milwaukee Wisconsin
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Senior Member
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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