Home » Public Forums » GMCnet » Adding Grey Water Tank..
| Adding Grey Water Tank.. [message #190422] |
Thu, 15 November 2012 19:02  |
mojoe
Messages: 319
Registered: November 2012
Location: Monroe, NC
Karma: 0
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Did a quick search and saw this was hit on in a few topics. But Just curious if a grey tank can be added and how without to much trouble.
Not ready to do mine yet, but will have to address it before its camp ready. Black water tank has a crack, due to PO not
winterizing it. So I will have to repair tank anyway, Or... take it out and add 2 new ones.
Sure looks to me like there is space to the rear of the RV behind the black water tank.
If I pull the black tank out I could rerout Grey water lines back and just let toilet dump into black tank.
So OK oh wise ones tell me its easy and show me the way !
Joe Kemenczky..
1975 Eleganza ll " Odie " 75,000 miles..
"When I was younger, I could remember anything, whether it had happened or not." - Mark Twain.
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| Re: [GMCnet] Adding Grey Water Tank.. [message #190424 is a reply to message #190422] |
Thu, 15 November 2012 19:31  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Joe,
It is not impossible, but it is pretty hard to do. I know of only one
person that added a grey tank to cover the kitchen sink by putting a
small tank in front of the gas tanks. The bath and shower drains
cannot be rerouted without total changing the tank layout in the
back. I can tell you up front that I never really needed a grey tank
or missed having one in the previous coach that I have owned.
JR Wright
78 Buskirk Stretch
Michigan
>
>
> Did a quick search and saw this was hit on in a few topics. But Just
> curious if a grey tank can be added and how without to much trouble.
> Not ready to do mine yet, but will have to address it before its
> camp ready. Black water tank has a crack, due to PO not
> winterizing it. So I will have to repair tank anyway, Or... take it
> out and add 2 new ones.
>
> Sure looks to me like there is space to the rear of the RV behind
> the black water tank.
>
> If I pull the black tank out I could rerout Grey water lines back
> and just let toilet dump into black tank.
>
> So OK oh wise ones tell me its easy and show me the way !
> --
> Joe Kemenczky
> 1975 Eleganza ll (Odie) 75,000 miles.
> Working on complete restoration.
> Loving every minute!
> Monroe, NC (East of Charlotte).
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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: Adding Grey Water Tank.. [message #190432 is a reply to message #190422] |
Thu, 15 November 2012 20:28 |
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mike miller
Messages: 3576
Registered: February 2004
Location: Hillsboro, Oregon
Karma: 0
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| toyomojoe wrote on Thu, 15 November 2012 17:02 |
... But Just curious if a grey tank can be added and how without to much trouble. ...
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Depends on how you define "to much trouble."
Yes, there is room under the coach for two waste tanks. You'll need to be able to route some of the waste lines around inside the coach.
Yes, it has been done. Most Coachman products, (Royales and Birchavens) have two tanks.
Separate tanks allow some tricks to conserve water, like a separate system to use gray water to flush the stool. It is also useful to be able flush the macerator (or dump hose) with gray water after dumping the black tank.
Single tanks are easier to manage, as you have fewer choices, and they have fewer parts so cost less. Also the contents of a single tank are a little "thiner" so they are easier to pump. (While not much of an issue now, I understand Thermasan system <http://www.amphicar.net/library/thermasan/thermasan.html> worked better with a single tank.)
What tank does what is mostly designated by the location on the stool. If it is a rear bath, the rear tank ends up as the black tank and the front tank ends up as the black tank with a side bath coach.
WHY? Because it is much easier to run the gray water plumbing to a remotely located tank than it is the plumbing from the stool.
Conversion to two tanks can be done. If it is "to much trouble" is up to you to decide.
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
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| Re: Adding Grey Water Tank.. [message #190503 is a reply to message #190422] |
Fri, 16 November 2012 19:45 |
RadioActiveGMC
Messages: 1020
Registered: November 2010
Location: Hot AZ desert
Karma: 0
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ON/OFF Valve leading to a Hose Bibb outside to have gray water (kitchen water) into a outside pail. Use gray water to wash the GMC and keep it shiny without filling up the tank. One of the best mods I did yet.
***"Gettin There"-1973 23' Sequoia-
Michael, Onans smell, "Go solar/wind power!"
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| Re: Adding Grey Water Tank.. [message #190521 is a reply to message #190422] |
Fri, 16 November 2012 21:46 |
Adrien G.
Messages: 474
Registered: May 2008
Location: Burns Flat, OK 73624
Karma: 1
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| toyomojoe wrote on Thu, 15 November 2012 19:02 |
Did a quick search and saw this was hit on in a few topics. But Just curious if a grey tank can be added and how without to much trouble.
Not ready to do mine yet, but will have to address it before its camp ready. Black water tank has a crack, due to PO not
winterizing it. So I will have to repair tank anyway, Or... take it out and add 2 new ones.
Sure looks to me like there is space to the rear of the RV behind the black water tank.
If I pull the black tank out I could rerout Grey water lines back and just let toilet dump into black tank.
So OK oh wise ones tell me its easy and show me the way !
|
Joe,
I can't think of any way of adding a rear gray tank, and not have a plumbing nightmare.
But, my thought for adding about a 20 gal or so gray tank is:
1) Move the first crossmember (the first one after the trans crossmember) forward so the gas tank would fit in the space.
2) Relocate forward the 2 gas tanks in their new location.
3) Install new gray tank in the location where main tank was,
the sink, lavatory, and possibly the shower could drain
into the tank.
The tank discharge could run to the back on the left side through the crossmembers and connect with main drain.
The exhaust pipe, fuel lines would also need some adjustment.
It's easier if the frame is out, but it's doable from underneath also.
Adrien & Jenny Genesoto
75 Glenbrook (26-3) Mods LS3.70 FD / Reaction Sys / 80mm Front&Intermidiate / Hydroboost / 16" Tires / Frame Rebuild / Interior Rebuild
Yuba City,Ca. Text 530-nine-3-three-3-nine-nine-6
[Updated on: Fri, 16 November 2012 21:51] Report message to a moderator |
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| Re: Adding Grey Water Tank.. [message #190523 is a reply to message #190422] |
Fri, 16 November 2012 22:18 |
George B.
Messages: 213
Registered: February 2012
Karma: 1
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The PO of my 73 installed about a 15 or so gal. gray water tank when he remodeled. The rear has a queen bed on the passenger side that lifts up to expose the fresh and gray water tanks. The bathroom sink drains into it via a flex pipe. The shower floor has a drain that is pumped into the gray water tank. The gray water tank has a valve at the bottom that opens to drain into a pipe through the floor into the black water tank under the coach. I did a quick You Tube to show how it is set up. Please forgive the poor video as it was a very fast job. See it here:
http://www.youtube.com/watch?v=kKDHyl3ysXs&feature=plcp
George Butts
Las Vegas Nevada
73 "Custom 26' Q" & 76 23' Birchaven
71 Honda 600 Coupe & 01 Tracker Toads
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| Re: [GMCnet] Adding Grey Water Tank.. [message #190528 is a reply to message #190521] |
Fri, 16 November 2012 23:53 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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My royale has a black and grey tank. The grey is rearward of the black as you hypothesized. Finding a suitable location u der the coach would not be the big job. The more challenging job would be to separate and re plumb the drain/vent lines without removing the interior finishes. I could post some photos of mine if you wish.
Sully
77 royale
Seattle
Sent from my iPhone
On Nov 16, 2012, at 7:46 PM, Adrien Genesoto <fixman54@syix.com> wrote:
>
>
> toyomojoe wrote on Thu, 15 November 2012 19:02
>> Did a quick search and saw this was hit on in a few topics. But Just curious if a grey tank can be added and how without to much trouble.
>> Not ready to do mine yet, but will have to address it before its camp ready. Black water tank has a crack, due to PO not
>> winterizing it. So I will have to repair tank anyway, Or... take it out and add 2 new ones.
>>
>> Sure looks to me like there is space to the rear of the RV behind the black water tank.
>>
>> If I pull the black tank out I could rerout Grey water lines back and just let toilet dump into black tank.
>>
>> So OK oh wise ones tell me its easy and show me the way !
>
>
>
>
> Joe,
>
> I can't think of an idea of adding a rear gray tank, and not have it scrape.
>
> But, my thought on adding about a 20 gal or so gray tank is:
> 1) Move the first crossmember (the first one after the trans crossmember) forward so the gas tank would fit in the space.
> 2) Relocate forward the 2 gas tanks in their new location.
> 3) Install new gray tank in the location where main tank was,
> the sink, lavatory, and possibly the shower could drain
> into the tank.
> The tank discharge could run to the back on the left side through the crossmembers and connect with main drain.
> The exhaust pipe, fuel lines would also need some adjustment.
>
> It's easier if the frame is out, but it's doable from underneath also.
>
>
>
>
>
> --
> ”When we avoid the mistakes we might have made, we sometimes make the mistakes that we might have avoided.”
>
>
>
> Adrien & Jenny
> 75 Glenbrook
> Yuba City,Ca.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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| Re: [GMCnet] Adding Grey Water Tank.. [message #190531 is a reply to message #190528] |
Sat, 17 November 2012 00:54 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Joe,
We have done few units with great results.
Contact us and we will help you check out your unit and advise you as to
how to do it.
On Fri, Nov 16, 2012 at 9:53 PM, Todd Sullivan <sgltrac@gmail.com> wrote:
> My royale has a black and grey tank. The grey is rearward of the black as
> you hypothesized. Finding a suitable location u der the coach would not be
> the big job. The more challenging job would be to separate and re plumb the
> drain/vent lines without removing the interior finishes. I could post some
> photos of mine if you wish.
>
> Sully
> 77 royale
> Seattle
>
> Sent from my iPhone
>
> On Nov 16, 2012, at 7:46 PM, Adrien Genesoto <fixman54@syix.com> wrote:
>
> >
> >
> > toyomojoe wrote on Thu, 15 November 2012 19:02
> >> Did a quick search and saw this was hit on in a few topics. But Just
> curious if a grey tank can be added and how without to much trouble.
> >> Not ready to do mine yet, but will have to address it before its camp
> ready. Black water tank has a crack, due to PO not
> >> winterizing it. So I will have to repair tank anyway, Or... take it out
> and add 2 new ones.
> >>
> >> Sure looks to me like there is space to the rear of the RV behind the
> black water tank.
> >>
> >> If I pull the black tank out I could rerout Grey water lines back and
> just let toilet dump into black tank.
> >>
> >> So OK oh wise ones tell me its easy and show me the way !
> >
> >
> >
> >
> > Joe,
> >
> > I can't think of an idea of adding a rear gray tank, and not have it
> scrape.
> >
> > But, my thought on adding about a 20 gal or so gray tank is:
> > 1) Move the first crossmember (the first one after the trans
> crossmember) forward so the gas tank would fit in the space.
> > 2) Relocate forward the 2 gas tanks in their new location.
> > 3) Install new gray tank in the location where main tank was,
> > the sink, lavatory, and possibly the shower could drain
> > into the tank.
> > The tank discharge could run to the back on the left side through the
> crossmembers and connect with main drain.
> > The exhaust pipe, fuel lines would also need some adjustment.
> >
> > It's easier if the frame is out, but it's doable from underneath also.
> >
> >
> >
> >
> >
> > --
> > ”When we avoid the mistakes we might have made, we sometimes make
> the mistakes that we might have avoided.”
> >
> >
> >
> > Adrien & Jenny
> > 75 Glenbrook
> > Yuba City,Ca.
> > _______________________________________________
> > GMCnet mailing list
> > Unsubscribe or Change List Options:
> > http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>
--
Jim Kanomata
Applied/GMC, Fremont,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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| Re: [GMCnet] Adding Grey Water Tank.. [message #190539 is a reply to message #190531] |
Sat, 17 November 2012 06:24 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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| jimk wrote on Sat, 17 November 2012 00:54 |
Joe,
We have done few units with great results.
Contact us and we will help you check out your unit and advise you as to how to do it.
...
|
Joe, you and Ken, please post the summary of your call. I, for one, am interested in doing the same and expect many others are also.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: [GMCnet] Adding Grey Water Tank.. [message #190581 is a reply to message #190539] |
Sat, 17 November 2012 16:08 |
mojoe
Messages: 319
Registered: November 2012
Location: Monroe, NC
Karma: 0
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Senior Member |
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I knew there where some brave souls on here that could figure it out.
Re routing lines would be easier right now since most of my interior is still out. Might get froggy and pull the black tank and see just how it is plumbed. Does anyone have a picture of the top side of a black tank that shows how the plumbing enters?
I have to pull it anyway due to a crack that needs to be repaired..
I really think a grey water tank would be worth the effort. maybe not the cost but the effort..lol
Joe Kemenczky..
1975 Eleganza ll " Odie " 75,000 miles..
"When I was younger, I could remember anything, whether it had happened or not." - Mark Twain.
.
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| Re: Adding Grey Water Tank.. [message #190584 is a reply to message #190422] |
Sat, 17 November 2012 16:22 |
kerry pinkerton
Messages: 2565
Registered: July 2012
Location: Harvest, Al
Karma: 15
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Senior Member |
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Joe, I THINK there are two holes, one for the toliet near the front and another below the back bathroom wall for the shower and sink.
I was looking at mine tonight. Seems to be a guy could pull the fresh water tank and cut into the gray water lines and re'route them to a new tank with the drain in the floor by the generator or water tank. You'd have to run a new drain line for the sink somehow around the drivers side to the rear of the coach and back into the new tank but I think that is doable.
Kerry Pinkerton - North Alabama
Had 5 over the years. Currently have a '06 Fleetwood Discovery 39L
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| Re: Adding Grey Water Tank.. [message #190589 is a reply to message #190584] |
Sat, 17 November 2012 17:02 |
mojoe
Messages: 319
Registered: November 2012
Location: Monroe, NC
Karma: 0
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Senior Member |
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Hey Kerry.. also looked at mine this afternoon. My coach is open now, sort of. I can see the toilet pipe going into the top of the black tank. between it and the fresh water tank the shower and sink pipe go throuigh the floor. I think you could be right. If I raise my freshwater tanks a couple inches and instead of going through the floorcontinue towards the rear and then go into the new grye water tank behind the black water tank. The kitchen sink could be routed back and into the greywater tank. I'll look at it tomorrrow nd see where ith would come out..Note to self, need to vent black tank off same vent now. through roof.
Joe Kemenczky..
1975 Eleganza ll " Odie " 75,000 miles..
"When I was younger, I could remember anything, whether it had happened or not." - Mark Twain.
.
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| Re: [GMCnet] Adding Grey Water Tank.. [message #190600 is a reply to message #190596] |
Sat, 17 November 2012 18:36 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Geez, if all I did was 'dump' I don't think I'd make two weeks :)
--johnny
'76 23' transmode norris
'76 palm beach
From: Rob Mueller <robmueller@iinet.net.au>
To: gmclist@temp.gmcnet.org
Sent: Saturday, November 17, 2012 6:56 PM
Subject: Re: [GMCnet] Adding Grey Water Tank..
Dan,
Am to understand you and Teri can go for two weeks without dumping?
How often do you shower?
Regards,
Rob M.
-----Original Message-----
From: Dan Gregg
We like being able to go 2 weeks or longer without dumping also.
Dan
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Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
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| Re: [GMCnet] Adding Grey Water Tank.. [message #190609 is a reply to message #190607] |
Sat, 17 November 2012 20:39 |
mickeysss
Messages: 1476
Registered: January 2012
Karma: 0
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i just fell off my chair laughing,
mickey
77 palm beach
anaheim ca.
On Nov 17, 2012, at 6:30 PM, Dan Gregg wrote:
>
>
> Robert Mueller wrote on Sat, 17 November 2012 19:55
>> Dan,
>>
>> If Helen and I make it a week we're lucky.
>>
>> I reckon I need to get with you guys and learn your tricks to conserve water!
>>
>> No smart a$$ remarks like "shower with a friend" there's hardly enough room for my fat a$$ in the Avion shower! ;)
>>
>> Regards,
>> Rob M.
>>
>> -----Original Message-----
>> From: Dan Gregg
>>
>> Yea and we shower daily.
>> Dan
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
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>
> Rob, it is all in how you set the coach up and the life style you lead while living in the coach. You have read our blog. We are rarely in the GMC during daylight hours unless we are traveling or it is bad weather. I will show you stuff next time you stop by. No, we do not shower together.
> Dan
> --
> Dan & Teri Gregg
>
>
> http://danandteri.blogspot.com/
>
>
>
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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