Home » Public Forums » GMCnet » Thermasan (injector)
| Thermasan [message #349411] |
Fri, 18 October 2019 12:45  |
Rich Kinas
Messages: 113
Registered: July 2019
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Matt and anybody that has any knowledge....
I am replacing my exhaust manifold gaskets, exhaust down pipes ,pipe flange gaskets, mufflers, etc all because of that broken lower dip-stick tube. Actually it just started the process that I would have eventually gotten around to eventually. So while I am installing the new exhaust down pipes, I figured I would weld bungs into place for my future ThermaSan installation. I am actually creating a modified ThermaSan install since the only parts I actually have on hand are the pump and motor. For my injector I am going to try to use a "M18x1.5 O2 Sensor CEL Eliminator" that threads into a standard M18x1.5 O2 bung that I am going to weld onto the down pipe about 12 inches from the manifold connector flange. And about 6 inches from the manifold connector flange I am planning on mounting a 1/8" NPT steel bung that I will install a "2M EGT K type thermocouple exhaust probe High Temp Sensor" to monitor my exhaust temperature. So my question so far is does this plan sound reasonable? Is if sufficient to mount the ThermaSan injector just 6 inches down stream of the thermocouple, or should I mount it further down closer to the mufflers? I figure that what ever I end up using for my injector the O2 sensor bung should be able to accommodate it.
Rich
Rich Kinas
1976 Elaganza II
Orlando, FL
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| Re: Thermasan [message #349413 is a reply to message #349411] |
Fri, 18 October 2019 13:02  |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
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I have my thermocouple mounted about 6" upstream from the injector. I can see the exhaust temp drop when thermosan comes on. I believe a few more inches separation would help.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Thermasan [message #349430 is a reply to message #349429] |
Sat, 19 October 2019 05:48 |
Rich Kinas
Messages: 113
Registered: July 2019
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Although it would look awesome and make me smile everytime I crawled under
the coach, the original steel seems to have lasted 43 years so I'm planning
on just going back with mild steel. Many other areas to spend these dollars
on right now! Maybe in 10 years or so when I am looking for something to
do to spruce it up....
Rich
On Sat, Oct 19, 2019 at 3:00 AM Steve Southworth via Gmclist <
gmclist@list.gmcnet.org> wrote:
> tmsnyder wrote on Fri, 18 October 2019 18:39
>> Are you putting in an all stainless exhaust? :lol:
>
> The SS exaust has been in for 5 years
> --
> Steve Southworth
> 1974 Glacier TZE064V100150 (for workin on)
> 1975 Transmode TZE365V100394 (parts & spares)
> Palmyra WI
>
> _______________________________________________
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Rich Kinas
1976 Elaganza II
Orlando, FL
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| Re: [GMCnet] Thermasan [message #349447 is a reply to message #349433] |
Sun, 20 October 2019 05:00 |
Rich Kinas
Messages: 113
Registered: July 2019
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Great Feedback for those not familiar with the ThermaSan. I have read
everything I could find on the ThermaSan including all the documents on the
bdub site. As an engineer the challenge to reproduce and enhance this
system is irresistible! So if I was not already working on the coach, and
these parts I would probably not be tackling it now, however since I am
here and I can modify the parts as necessary without hardly
additional labor and then just block off these parts for now, I plan on
doing that. Anyway the O2 bung would be necessary for a FI system in the
future, and the exhaust tempreature monitoring is a nice to have with out
without the ThermaSan. I'll keep everyone up to speed on this adventure as
it develops, just in case there is anybody else as crazy as I am in the
future.
Rich
---------- Forwarded message ---------
From: John Wright via Gmclist
Date: Sat, Oct 19, 2019 at 10:50 AM
Subject: Re: [GMCnet] Thermasan
To:
Cc: John Wright
To All:
There are a number of files (3) on bdub.net website:
http://bdub.net/manuals/Thermasan-flyer.pdf
http://www.bdub.net/manuals/Thermasan-OwnersManual.pdf
http://www.gmcmi.com/wp-content/uploads/2014/05/Thermasan2-500-InstallOwners-Manual.pdf
If you have not seen these or read them they might be helpful for your
quest to burn POO!
From most GMCers that I had talked to over the last 20+ years it never
really worked well, was a very high maintenance system and most were
removed at the first time they failed due to component failure, but if that
is your quest then go for it. If your coach sets for any period of time
during the camping of travel season then you must make sure that the system
is clean from one end to the other or you will have clogging issues and
that goes for cleaning before storage including adding antifreeze if you
are in a cold climate. Also comments about using CS exhaust tubing and how
it has not failed should be taken with caution as the CS tubing will
corrode quickly in a high heat acidic atmosphere. Most SS exhaust system
that sold today are made out of 304SS as it is much more less expensive
that the highly corrosive resistant 316SS. The 304 can also suffer some
corrosion problems depending on the chemical make up of the POO being
burned.
I would better spend my time exploring the world around me than doing
constant monitoring and maintaince each travel season, but you choose your
way and enjoy your GMC your way!
Regards,
J.R. Wright
GMC Great Laker MHC
GMCGL Tech Editor
GMC Eastern States Charter Member
GMCMI
78 GMC Buskirk 29.5’ Stretch
75 GMC Avion (Under Reconstruction)
Michigan
[color=blue]> On Oct 19, 2019, at 3:00 AM, Steve Southworth via Gmclist wrote:
>
> tmsnyder wrote on Fri, 18 October 2019 18:39
>> Are you putting in an all stainless exhaust? :lol:
>
> The SS exaust has been in for 5 years
> --
> Steve Southworth
> 1974 Glacier TZE064V100150 (for workin on)
> 1975 Transmode TZE365V100394 (parts & spares)
> Palmyra WI
>
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Rich Kinas
1976 Elaganza II
Orlando, FL
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| Re: [GMCnet] Thermasan [message #349466 is a reply to message #349447] |
Sun, 20 October 2019 16:58 |
Rick Staples
Messages: 126
Registered: May 2014
Location: Johnstown, Colorado, USA
Karma: -1
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Rich Kinas wrote: "I'll keep everyone up to speed on this adventure as
it develops, just in case there is anybody else as crazy as I am in the
future."
Please do that! I'm another crazy one who's been gathering old Thermasan parts for a while now. Always thought it was a great concept and wanted one. FWIW, remember that our exhaust system already deals with lots of water (1 gallon of gas ~= 1 gallon of water exhausted.), as the Thermasan literature makes clear. Since our engines work hot and hard most of the time, our exhaust systems tend to last a long time, although a rear-mounted muffler may have a shorter life since it takes longer to warm up. (Condensation inside the muffler is the usual cause of failure.)
Some people I've talked to said the plastic tubing in the peristaltic pump would require replacement every year or so, but I would think modern materials might help with that. If I do it, I'm thinking a fresh-water flush connection to clear the system before storage might help too.
Anyhow, keep us posted. Poop-shooters unite! You have nothing to lose but your...... Oh, whatever. 
Rick Staples
Rick Staples, '75 Eleganza, Johnstown, CO
"Advice is a dangerous gift, even from the Wise to the Wise, and all paths may run ill." -Tolkien
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| Re: [GMCnet] Thermasan [message #349478 is a reply to message #349466] |
Mon, 21 October 2019 05:40 |
Rich Kinas
Messages: 113
Registered: July 2019
Karma: 1
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Senior Member |
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Rick thanks for the encouragement! Have you ever seen an original install
and the location of the injector? We only have about 2 feet of exhaust to
play with between the manifolds and mufflers so I don't think it would make
much of a difference, where it is mounted exactly, I am just going to make
it convenient for access, and I'll see where that ends up. As far as the
tubing, I'm not sure how close the tubing can get to the exhaust and not
have a short life. Most of even the high temperature tube I have located is
only good for 500. My thought was to use steel tube for the last 12 inches
with compression fittings attached to my O2 eliminator. Well see.... I like
the idea of a flush out mechanism, I'm going to have to think about that...
Rich
On Sun, Oct 20, 2019 at 5:59 PM Richard H Staples via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Rich Kinas wrote: "I'll keep everyone up to speed on this adventure as
> it develops, just in case there is anybody else as crazy as I am in the
> future."
>
> Please do that! I'm another crazy one who's been gathering old Thermasan
> parts for a while now. Always thought it was a great concept and wanted
> one. FWIW, remember that our exhaust system already deals with lots of
> water (1 gallon of gas ~= 1 gallon of water exhausted.), as the Thermasan
> literature makes clear. Since our engines work hot and hard most of the
> time, our exhaust systems tend to last a long time, although a rear-mounted
> muffler may have a shorter life since it takes longer to warm up.
> (Condensation inside the muffler is the usual cause of failure.)
>
> Some people I've talked to said the plastic tubing in the peristaltic pump
> would require replacement every year or so, but I would think modern
> materials might help with that. If I do it, I'm thinking a fresh-water
> flush connection to clear the system before storage might help too.
>
> Anyhow, keep us posted. Poop-shooters unite! You have nothing to lose
> but your...... Oh, whatever. ;)
>
> Rick Staples
>
> --
> Rick Staples, '75 Eleganza, Johnstown, CO
>
> "Advice is a dangerous gift, even from the Wise to the Wise, and all paths
> may run ill." -Tolkien
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Rich Kinas
1976 Elaganza II
Orlando, FL
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| Re: [GMCnet] Thermasan [message #349504 is a reply to message #349503] |
Mon, 21 October 2019 12:55 |
mghamms
Messages: 466
Registered: March 2016
Location: Ware, Massachusetts
Karma: 2
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How about just a manual on off switch. Let the driver decide when to scent the road behind.
1977 Kingsley 455 as stock as it gets except lots of Ragusa parts
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| Re: [GMCnet] Thermasan [message #349506 is a reply to message #349503] |
Mon, 21 October 2019 13:52 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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On my '74 OEM thermasan OEM install the injector was located about 10" from the manifold.
As noted by MattC the thermocouple system can trigger when the exhaust flow is not high. Lately my thermocouple readings have been a bit goofy so I have been controlling manually. It works but is a PITA.
Baked diaper - yep. This can be used to our advantage. Some idiot tailgating you. No problem. Just manually Thermasan them. Shortly they will, as if by magic back off. <GRIN>. We have the word "Thermasan'd" just under the drivers toll window. Underneath it, just like bomb markers on an aircraft, are placed auto stickers upside down, to indicate successful "kills".
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Thermasan [message #349508 is a reply to message #349506] |
Mon, 21 October 2019 16:36 |
Rich Kinas
Messages: 113
Registered: July 2019
Karma: 1
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Senior Member |
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Thats awesome!!!! Always have to make sure you have a little something in
the tank just for those special occasions. My plan is to monitor exhaust
temperature, vacuum, and speed. I'm building a small custom logic board to
take all the inputs and trigger a relay to close. All the inputs have
tune-able pots on the board to fine tune the system once it is in. Still
mocking up initial sensors, and logic. I'm hoping to be able to put
together something that, anyone else interested in giving it a shot, has a
way to start that may not be so electrically inclined. I'll publish the
schematic with parts, etc once I have something really workable. If anybody
has any thoughts on the flushing idea, I'd be glad to here them.
Rich
On Mon, Oct 21, 2019 at 2:53 PM Steve Southworth via Gmclist <
gmclist@list.gmcnet.org> wrote:
> On my '74 OEM thermasan OEM install the injector was located about 10"
> from the manifold.
>
> As noted by MattC the thermocouple system can trigger when the exhaust
> flow is not high. Lately my thermocouple readings have been a bit goofy so
> I
> have been controlling manually. It works but is a PITA.
>
> Baked diaper - yep. This can be used to our advantage. Some idiot
> tailgating you. No problem. Just manually Thermasan them. Shortly they
> will, as
> if by magic back off. . We have the word "Thermasan'd" just under
> the drivers toll window. Underneath it, just like bomb markers on an
> aircraft, are placed auto stickers upside down, to indicate successful
> "kills".
> --
> Steve Southworth
> 1974 Glacier TZE064V100150 (for workin on)
> 1975 Transmode TZE365V100394 (parts & spares)
> Palmyra WI
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Rich Kinas
1976 Elaganza II
Orlando, FL
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| Re: Thermasan [message #349541 is a reply to message #349411] |
Tue, 22 October 2019 15:23 |
Stephan Ashe
Messages: 32
Registered: October 2016
Location: Tucson Az
Karma: 0
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bought a thermasan system on the Ebay two years ago with plans to install on the 73. didn't get to it. now with the 77 royale there are two tanks... maybe just hook to the gray water and use a macerator on the black tank? will miss the opportunity to diaper those behind but believe the gray will fill up a lot sooner than the black tank.
Stephan Ashe
1973 26-6 painted desert?
1977 Royale sidebath
Tucson Az
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| Re: Thermasan [message #349596 is a reply to message #349541] |
Wed, 23 October 2019 23:43 |
midlf
Messages: 2212
Registered: July 2007
Location: SE Wisc. (Palmyra)
Karma: 1
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Senior Member |
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Stephan Ashe wrote on Tue, 22 October 2019 15:23bought a thermasan system on the Ebay two years ago with plans to install on the 73. didn't get to it. now with the 77 royale there are two tanks... maybe just hook to the gray water and use a macerator on the black tank? will miss the opportunity to diaper those behind but believe the gray will fill up a lot sooner than the black tank.
The advantage of the Thermasan is, when traveling daily, the tank gets emptied and there is no need to look for a place to dump the black tank. If I had a Royale I would set up a two way electric valve so either tank could be burned.
Steve Southworth
1974 Glacier TZE064V100150 (for workin on)
1975 Transmode TZE365V100394 (parts & spares)
Palmyra WI
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| Re: [GMCnet] Thermasan [message #349603 is a reply to message #349596] |
Thu, 24 October 2019 07:57 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Please keep us advised as to your progress and also after a year of use.
On Wed, Oct 23, 2019 at 9:43 PM Steve Southworth via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Stephan Ashe wrote on Tue, 22 October 2019 15:23
>> bought a thermasan system on the Ebay two years ago with plans to
> install on the 73. didn't get to it. now with the 77 royale there are two
>> tanks... maybe just hook to the gray water and use a macerator on the
> black tank? will miss the opportunity to diaper those behind but believe the
>> gray will fill up a lot sooner than the black tank.
>
> The advantage of the Thermasan is, when traveling daily, the tank gets
> emptied and there is no need to look for a place to dump the black tank.
> If I
> had a Royale I would set up a two way electric valve so either tank could
> be burned.
> --
> Steve Southworth
> 1974 Glacier TZE064V100150 (for workin on)
> 1975 Transmode TZE365V100394 (parts & spares)
> Palmyra WI
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmcrvparts.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] Thermasan [message #349604 is a reply to message #349603] |
Thu, 24 October 2019 08:00 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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On Thu, Oct 24, 2019 at 5:57 AM Jim Kanomata wrote:
> Please keep us advised as to your progress and also after a year of use.
>
> On Wed, Oct 23, 2019 at 9:43 PM Steve Southworth via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Stephan Ashe wrote on Tue, 22 October 2019 15:23
>>> bought a thermasan system on the Ebay two years ago with plans to
>> install on the 73. didn't get to it. now with the 77 royale there are two
>>> tanks... maybe just hook to the gray water and use a macerator on the
>> black tank? will miss the opportunity to diaper those behind but believe the
>>> gray will fill up a lot sooner than the black tank.
>>
>> The advantage of the Thermasan is, when traveling daily, the tank gets
>> emptied and there is no need to look for a place to dump the black tank.
>> If I
>> had a Royale I would set up a two way electric valve so either tank could
>> be burned.
>> --
>> Steve Southworth
>> 1974 Glacier TZE064V100150 (for workin on)
>> 1975 Transmode TZE365V100394 (parts & spares)
>> Palmyra WI
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.appliedgmcrvparts.com
> 1-800-752-7502
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmcrvparts.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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