| [GMCnet] Exaust leaks [message #234835] |
Thu, 02 January 2014 18:26  |
Robert McMahan
Messages: 44
Registered: February 2009
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The new standard exaust pipes are hard to clamp enough to stop leaks. All the joints on my 3" pipe leak moisture and even though I
use flex pipe to duck the exaust outside in the winter when my shop is closed up, my carbon manoxide alarm eventually goes off. Not good. In the past I have welded the connections on old car exaust systems as muffler shops do now.
Any opinions on how to deal with this issue? What about welding?
Thanks for all your inputs on the propane issue. The problem is solved.
Robert McMahan
77 Kingsley
Bozeman, Montana
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| Re: [GMCnet] Exaust leaks [message #234854 is a reply to message #234835] |
Thu, 02 January 2014 20:21  |
GeorgeRud
Messages: 1380
Registered: February 2007
Location: Chicago, IL
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Are you using the U shaped muffler clamps or the wider clamps that encircle the pipe completely (like JimK uses in his systems). They're not cheap, but work great at sealing the joints.
George Rudawsky
Chicago, IL
75 Palm Beach
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| Re: [GMCnet] Exaust leaks [message #234855 is a reply to message #234835] |
Thu, 02 January 2014 20:36 |
chasingsummer
Messages: 434
Registered: May 2011
Location: asheboro, nc
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I used a putty material designed for exhaust pipes. muffler mend or something to that effect. I filled crack, clamped, then ran motor to heat up and cure product per instructions on package.
JWID, worked for me
brian
asheboro, nc
75 eleganza, 74 build
119k miles and counting,
DOG HOUSE
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| Re: [GMCnet] Exaust leaks [message #234865 is a reply to message #234835] |
Thu, 02 January 2014 21:20 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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I think the heavy putty is more of a patch. There is a paint on sealant that goes on all the pipe joints (almost like if you were doing PVC) then clamped and is heat cured at startup.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: [GMCnet] Exaust leaks [message #234868 is a reply to message #234835] |
Thu, 02 January 2014 21:32 |
Bob de Kruyff
Messages: 4260
Registered: January 2004
Location: Chandler, AZ
Karma: 1
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| Robert McMahan wrote on Thu, 02 January 2014 17:26 |
The new standard exaust pipes are hard to clamp enough to stop leaks. All the joints on my 3" pipe leak moisture and even though I
use flex pipe to duck the exaust outside in the winter when my shop is closed up, my carbon manoxide alarm eventually goes off. Not good. In the past I have welded the connections on old car exaust systems as muffler shops do now.
Any opinions on how to deal with this issue? What about welding?
Thanks for all your inputs on the propane issue. The problem is solved.
Robert McMahan
77 Kingsley
Bozeman, Montana
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I'd try the band clamps.
Bob de Kruyff
78 Eleganza
Chandler, AZ
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| Re: [GMCnet] Exaust leaks [message #235062 is a reply to message #234835] |
Sat, 04 January 2014 12:29 |
Ultravan Owners
Messages: 443
Registered: March 2013
Karma: 0
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Anyone have picture(s) and part number of the clamps like what JimK uses?
Tony (Ontario Canada)
Marie and I are blessed to have had a 2nd chance to buy our farm.
Still hoping and more importantly praying to be able to build a garage.
Our 1970 Ultravan #520 has an Olds Toronado 455 in back.
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| Re: [GMCnet] Exaust leaks [message #235077 is a reply to message #235069] |
Sat, 04 January 2014 15:06 |
Joe Weir
Messages: 769
Registered: February 2013
Location: Columbia, SC
Karma: 7
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| Quote: |
> Anyone have picture(s) and part number of the clamps like what JimK uses?
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Like this:
http://www.jegs.com/images/photos/200/289/289-33278.jpg
http://www.jegs.com/i/Dynomax/289/33278/10002/-1?parentProductId=744706
76 Birchaven - "Wicked Mistress" - New engine, trans, alum radiator, brakes, Sully airbags, fuel lines, seats, adult beverage center... those Coachmen guys were really thinking about us second hand owners by including that beverage center...
Columbia, SC.
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| Re: [GMCnet] Exaust leaks [message #235131 is a reply to message #234835] |
Sun, 05 January 2014 07:00 |
Ultravan Owners
Messages: 443
Registered: March 2013
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Thank you.
Our 455 has exhaust leaks and it is under the bed in the back of UV520.
Also I'm close to purchasing a 73 GMC (for parts for UV520) and a 76 Eleganza to use.
Tony (Ontario Canada)
Marie and I are blessed to have had a 2nd chance to buy our farm.
Still hoping and more importantly praying to be able to build a garage.
Our 1970 Ultravan #520 has an Olds Toronado 455 in back.
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| Re: [GMCnet] Exaust leaks [message #235210 is a reply to message #235131] |
Mon, 06 January 2014 06:49 |
Jim Bounds
Messages: 842
Registered: January 2004
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Yes, welding is the key, I have never seen a clamped system not leak. Clamp together systems are good if you do not have any local welders willing to do the work but I would install the system then when you can find someone who can, have the whole thing welded together. I feel that should always be SOP.
Jim Bounds
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On Sunday, January 5, 2014 8:00 AM, Tony <Ultravanman248@yahoo.com> wrote:
Thank you.
Our 455 has exhaust leaks and it is under the bed in the back of UV520.
Also I'm close to purchasing a 73 GMC (for parts for UV520) and a 76 Eleganza to use.
--
Tony (Ontario Canada) Marie and I are blessed to have had a 2nd chance to buy our farm. Someday I hope to build the garage of my dreams. We have 4 Ultravans & 2 Corvairs. Our 1970 Ultravan #520 has an Olds Toronado 455 in back.
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