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SS single Muffler installation [message #84454]

Thu, 13 May 2010 21:02

Jon payne

Messages: 495
Registered: May 2008

Karma: 1

Senior Member

Hi all,

This weekend I will be installing Thorleys and the SS single muffler from JimK. Assessing what needs to be done I found that the the propane line is right where the muffler needs to go (see below link).

I seen the pictures of the single muffler exhaust install EmeryStora did and I see he repositioned the line using 5/8" soft copper tubing. Question is where can one get soft copper tubing? I checked Lowes and they have nothing of the sort. Any help would be greatly appreciated!

http://www.gmcmhphotos.com/photos/showphoto.php?photo=33922&title=img-3271&cat=5466

http://www.gmcmhphotos.com/photos/showphoto.php?photo=1448&cat=3123

Jon

Jon Payne
76 Palm Beach
Westfield,IN

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Re: SS single Muffler installation [message #84456 is a reply to message #84454]

Thu, 13 May 2010 21:21

C Boyd

Messages: 2629
Registered: April 2006

Karma: 18

Senior Member

Jon Payne wrote on Thu, 13 May 2010 22:02

Hi all,

This weekend I will be installing Thorleys and the SS single muffler from JimK. Assessing what needs to be done I found that the the propane line is right where the muffler needs to go (see below link).

I seen the pictures of the single muffler exhaust install EmeryStora did and I see he repositioned the line using 5/8" soft copper tubing. Question is where can one get soft copper tubing? I checked Lowes and they have nothing of the sort. Any help would be greatly appreciated!

http://www.gmcmhphotos.com/photos/showphoto.php?photo=33922&title=img-3271&cat=5466

http://www.gmcmhphotos.com/photos/showphoto.php?photo=1448&cat=3123

Jon

Lowes is suppose to have it.
http://www.lowes.com/pl_Copper+Pipes+&+Fittings_4294822005_4294937087_
Soft copper usually comes in rolls and is easy to bend. There are different types. I don`t know what is best for propane.
About any plummers truck would probably have short pieces laying around. It is usually not throwed away at 1$ lb.

C. Boyd
76 Crestmont
East Tennessee

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Re: [GMCnet] SS single Muffler installation [message #84458 is a reply to message #84456]

Thu, 13 May 2010 21:45

USAussie

Messages: 15912
Registered: July 2007
Location: Sydney, Australia

Karma: 6

Senior Member

Jon,

If you want to make it real straight you can hook one end to something solid
and hook the other end to a come-a-long and pull it a bit, it will come out
straight!

Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426

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Regards, Rob M. (USAussie) The Pedantic Mechanic Sydney, Australia '75 Avion - AUS - The Blue Streak TZE365V100428 '75 Avion - USA - Double Trouble TZE365V100426

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Re: [GMCnet] SS single Muffler installation [message #84466 is a reply to message #84456]

Thu, 13 May 2010 23:45

jimk

Messages: 6734
Registered: July 2006
Location: Belmont, CA

Karma: 9

Senior Member

Be sure to use the heat shield, there have been times where shops will
not install the shield as they think it is impossible to do.
The diagonal frame was never positioned by a fixture so it can get in
the way to where you might need to cut the mid section of that frame
piece.
This muffler is a mild one and you'll find that the noise inside is very low.

On Thu, May 13, 2010 at 7:21 PM, Charles Boyd <covered-wagon@comcast.net> wrote:
>
>
> Jon Payne wrote on Thu, 13 May 2010 22:02
>> Hi all,
>>
>> This weekend I will be installing Thorleys and the SS single muffler from JimK. Assessing what needs to be done I found that the the propane line is right where the muffler needs to go (see below link).
>>
>> I seen the pictures of the single muffler exhaust install EmeryStora did and I see he repositioned the line using 5/8" soft copper tubing. Question is where can one get soft copper tubing? I checked Lowes and they have nothing of the sort. Any help would be greatly appreciated!
>>
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=33922&title=img-3271&cat=5466
>>
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=1448&cat=3123
>>
>> Jon
>
>
>
>
>
>
> Lowes is suppose to have it.
> http://www.lowes.com/pl_Copper+Pipes+&+Fittings_4294822005_4294937087_
> Soft copper usually comes in rolls and is easy to bend. There are different types. I don`t know what is best for propane.
> About any plummers truck would probably have short pieces laying around. It is usually not throwed away at 1$ lb.
> --
> C. Boyd
> 76 Crestmont by Midas
> East Tennessee
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription 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: SS single Muffler installation [message #84499 is a reply to message #84456]

Fri, 14 May 2010 07:37

Jon payne

Messages: 495
Registered: May 2008

Karma: 1

Senior Member

I saw the coil roll of copper Lowes. It is definitely not soft copper. Also they do not have the right kind of fittings. Man I hope this is going to be a PIA to find!

JP

Jon Payne
76 Palm Beach
Westfield,IN

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Re: SS single Muffler installation [message #84503 is a reply to message #84454]

Fri, 14 May 2010 07:53

Larry

Messages: 2875
Registered: January 2004
Location: Menomonie, WI

Karma: 10

Senior Member

Jon Payne wrote on Thu, 13 May 2010 21:02

Hi all,

This weekend I will be installing Thorleys and the SS single muffler from JimK. Assessing what needs to be done I found that the the propane line is right where the muffler needs to go (see below link).

I seen the pictures of the single muffler exhaust install EmeryStora did and I see he repositioned the line using 5/8" soft copper tubing. Question is where can one get soft copper tubing? I checked Lowes and they have nothing of the sort. Any help would be greatly appreciated!

http://www.gmcmhphotos.com/photos/showphoto.php?photo=33922&title=img-3271&cat=5466

http://www.gmcmhphotos.com/photos/showphoto.php?photo=1448&cat=3123

Jon

Maybe look at these pics. I had to do a little cutting and bending to get my flowmaster to work/fit.

http://www.gmcmhphotos.com/photos/showgallery.php?cat=3604

Larry

Smile

78 Royale w/500 Caddy
Menomonie, WI.

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Re: [GMCnet] SS single Muffler installation [message #84504 is a reply to message #84466]

Fri, 14 May 2010 07:50

Ray Erspamer

Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin

Karma: -3

Senior Member

I was all set to convert to the 3" exhaust and single rear muffler, I take all the measurements and find out that with my Royale's two waste tanks, there's no room for the muffler. DANG !!

Right now I have the twin mufflers up front with 2 pipes that just exit the passenger side of the coach in front of the door......too much exhaust smell with this setup, I'll just convert the side exhaust to the rear and leave it at that.

Ray

Ray & Lisa Erspamer
78 Royale Center Kitchen
TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/

________________________________
From: Jim Kanomata <jimkanomata@gmail.com>
To: gmclist@temp.gmcnet.org
Sent: Thu, May 13, 2010 11:45:23 PM
Subject: Re: [GMCnet] SS single Muffler installation

Be sure to use the heat shield, there have been times where shops will
not install the shield as they think it is impossible to do.
The diagonal frame was never positioned by a fixture so it can get in
the way to where you might need to cut the mid section of that frame
piece.
This muffler is a mild one and you'll find that the noise inside is very low.

On Thu, May 13, 2010 at 7:21 PM, Charles Boyd <covered-wagon@comcast.net> wrote:
>
>
> Jon Payne wrote on Thu, 13 May 2010 22:02
>> Hi all,
>>
>> This weekend I will be installing Thorleys and the SS single muffler from JimK. Assessing what needs to be done I found that the the propane line is right where the muffler needs to go (see below link).
>>
>> I seen the pictures of the single muffler exhaust install EmeryStora did and I see he repositioned the line using 5/8" soft copper tubing. Question is where can one get soft copper tubing? I checked Lowes and they have nothing of the sort. Any help would be greatly appreciated!
>>
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=33922&title=img-3271&cat=5466
>>
>> http://www.gmcmhphotos.com/photos/showphoto.php?photo=1448&cat=3123
>>
>> Jon
>
>
>
>
>
>
> Lowes is suppose to have it.
> http://www.lowes.com/pl_Copper+Pipes+&+Fittings_4294822005_4294937087_
> Soft copper usually comes in rolls and is easy to bend. There are different types. I don`t know what is best for propane.
> About any plummers truck would probably have short pieces laying around. It is usually not throwed away at 1$ lb.
> --
> C. Boyd
> 76 Crestmont by Midas
> East Tennessee
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription 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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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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Re: SS single Muffler installation [message #84506 is a reply to message #84454]

Fri, 14 May 2010 07:59

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma: 7

Senior Member

Jon Payne wrote on Thu, 13 May 2010 22:02

Hi all,

This weekend I will be installing Thorleys and the SS single muffler from JimK. Assessing what needs to be done I found that the the propane line is right where the muffler needs to go (see below link).

I seen the pictures of the single muffler exhaust install EmeryStora did and I see he repositioned the line using 5/8" soft copper tubing. Question is where can one get soft copper tubing? I checked Lowes and they have nothing of the sort. Any help would be greatly appreciated!

http://www.gmcmhphotos.com/photos/showphoto.php?photo=33922&title=img-3271&cat=5466

http://www.gmcmhphotos.com/photos/showphoto.php?photo=1448&cat=3123

Jon

Jon,

Most Lowe Depots have soft copper and flare fitting, but you often have to search on your own because the children in the department aren't very well acquainted with the stock items by name. If you see copper tubing in a coil, it is soft copper.

If that fails,

Talk to refrigeration people. That is all that is used for real systems. Some supply stores may sell a cut length (they don't like to), and they will have the correct fittings.

You want L, but type K will work.

One of the problems with not have your location posted is that I don't know if you are close enough for me to lend you a good (not hardware store grade) flaring block.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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Re: [GMCnet] SS single Muffler installation [message #84507 is a reply to message #84499]

Fri, 14 May 2010 07:58

Steven Ferguson

Messages: 3447
Registered: May 2006

Karma: 0

Senior Member

Jon,
The coil stuff is plenty soft enought. Fittings? Look over in the
fitting section for ferrels and ferrel nuts. You will need a flaring
tool for nice tight connections. It's all there. Very easy to find
this stuff.

On Fri, May 14, 2010 at 5:37 AM, Jon Payne <embrep@sbcglobal.net> wrote:
>
>
> I saw the coil roll of copper Lowes. It is definitely not soft copper. Also they do not have the right kind of fittings. Man I hope this is going to be a PIA to find!
>
> JP
>
>
> --
> Jon Payne/
> 76 Palm Beach/
> Westfield,IN
> _______________________________________________
> GMCnet mailing list
> List Information and Subscription Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
>

--
Steve Ferguson
'76 EII
Sierra Vista, AZ
Urethane bushing source
www.bdub.net/ferguson/
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Re: [GMCnet] SS single Muffler installation [message #84510 is a reply to message #84504]

Fri, 14 May 2010 08:06

Larry

Messages: 2875
Registered: January 2004
Location: Menomonie, WI

Karma: 10

Senior Member

Ray Erspamer wrote on Fri, 14 May 2010 07:50

I was all set to convert to the 3" exhaust and single rear muffler, I take all the measurements and find out that with my Royale's two waste tanks, there's no room for the muffler. DANG !!

Right now I have the twin mufflers up front with 2 pipes that just exit the passenger side of the coach in front of the door......too much exhaust smell with this setup, I'll just convert the side exhaust to the rear and leave it at that.

Ray

Ray & Lisa Erspamer
78 Royale Center Kitchen

Ray, did you look at my pics? I was able to make the single muffler work with my 78 Royale. Took some cutting and bending, and a heat shield, but it works...and NOW it's quiet....shhhhhh

Larry

Smile

78 Royale w/500 Caddy
Menomonie, WI.

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Re: [GMCnet] SS single Muffler installation [message #84513 is a reply to message #84499]

Fri, 14 May 2010 08:32

Ray Erspamer

Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin

Karma: -3

Senior Member

If it's coiled and you can uncoil it, it's soft copper. The straight 10' pieces are more like hard copper.

Ray

Ray & Lisa Erspamer
78 Royale Center Kitchen
TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/

________________________________
From: Jon Payne <embrep@sbcglobal.net>
To: gmclist@temp.gmcnet.org
Sent: Fri, May 14, 2010 7:37:02 AM
Subject: Re: [GMCnet] SS single Muffler installation

I saw the coil roll of copper Lowes. It is definitely not soft copper. Also they do not have the right kind of fittings. Man I hope this is going to be a PIA to find!

JP

--
Jon Payne/
76 Palm Beach/
Westfield,IN
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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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Re: [GMCnet] SS single Muffler installation [message #84516 is a reply to message #84510]

Fri, 14 May 2010 08:37

Ray Erspamer

Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin

Karma: -3

Senior Member

What model muffler did you purchase Larry?

The measurement from the wall of my waste tank to the IS of the frame rail is only about 9", yours looks like a much larger space.......knowing Coachmen, they just threw these up there without measuring.....I'll take another look, I sure would like to go to the rear muffler.

Ray

Ray & Lisa Erspamer
78 Royale Center Kitchen
TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/

________________________________
From: Larry <weidnerl@wwt.net>
To: gmclist@temp.gmcnet.org
Sent: Fri, May 14, 2010 8:06:22 AM
Subject: Re: [GMCnet] SS single Muffler installation

Ray Erspamer wrote on Fri, 14 May 2010 07:50
> I was all set to convert to the 3" exhaust and single rear muffler, I take all the measurements and find out that with my Royale's two waste tanks, there's no room for the muffler. DANG !!
>
> Right now I have the twin mufflers up front with 2 pipes that just exit the passenger side of the coach in front of the door......too much exhaust smell with this setup, I'll just convert the side exhaust to the rear and leave it at that.
>
> Ray
>
>
> Ray & Lisa Erspamer
> 78 Royale Center Kitchen

Ray, did you look at my pics? I was able to make the single muffler work with my 78 Royale. Took some cutting and bending, and a heat shield, but it works...and NOW it's quiet....shhhhhh
--
Larry :)
78 Royale w/500 Caddy
Menomonie, 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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Re: [GMCnet] SS single Muffler installation [message #84517 is a reply to message #84503]

Fri, 14 May 2010 08:40

Ray Erspamer

Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin

Karma: -3

Senior Member

Curious Larry, what is that rectangular hole for that's between your waste tank and the muffler shield......has your waste tank been replaced ??

Ray

Ray & Lisa Erspamer
78 Royale Center Kitchen
TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/

________________________________
From: Larry <weidnerl@wwt.net>
To: gmclist@temp.gmcnet.org
Sent: Fri, May 14, 2010 7:53:03 AM
Subject: Re: [GMCnet] SS single Muffler installation

Jon Payne wrote on Thu, 13 May 2010 21:02
> Hi all,
>
> This weekend I will be installing Thorleys and the SS single muffler from JimK. Assessing what needs to be done I found that the the propane line is right where the muffler needs to go (see below link).
>
> I seen the pictures of the single muffler exhaust install EmeryStora did and I see he repositioned the line using 5/8" soft copper tubing. Question is where can one get soft copper tubing? I checked Lowes and they have nothing of the sort. Any help would be greatly appreciated!
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=33922&title=img-3271&cat=5466
>
> http://www.gmcmhphotos.com/photos/showphoto.php?photo=1448&cat=3123
>
> Jon

Maybe look at these pics. I had to do a little cutting and bending to get my flowmaster to work/fit.

http://www.gmcmhphotos.com/photos/showgallery.php?cat=3604

--
Larry :)
78 Royale w/500 Caddy
Menomonie, 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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Re: [GMCnet] SS single Muffler installation [message #84536 is a reply to message #84517]

Fri, 14 May 2010 10:34

Jon payne

Messages: 495
Registered: May 2008

Karma: 1

Senior Member

Thanks every one for your inputs. I will check Lowes again. Larry, great pics that helps a lot!

I will post pics of the entire install. Hopefully I will be finished on Saturday!

Thanks again,
Jon

Jon Payne
76 Palm Beach
Westfield,IN

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Re: SS single Muffler installation [message #84542 is a reply to message #84454]

Fri, 14 May 2010 10:51

Larry

Messages: 2875
Registered: January 2004
Location: Menomonie, WI

Karma: 10

Senior Member

Ray,
Yes, I did replace the rear waste tank. It was all busted up. Lots of people have asked me about that rectangular hole next to the tank. It was there when I dropped the old tank. Have no idea what it was, or is for. Some day I will fill it with insulation.

The Muffler I used in this install is the Flowmaster 70. Not pictured in the install is the resonator that I have since added to cut down on a irritating rap coming from this Cad 500 at certain throttle/load conditions. I just measured distance between the new waste tank and the outside frame rail to be 15". So it appears I have a lot more room than you do. Measured 10" (tight) from outside frame rail to inside edge of the muffler. Don't look like the 70 series will fit in your application, but that new round flowmaster is 6" in diameter and might work in your case. I have a 6" round flowmaster with 3" inlet/outlet that I took off. Next time I come to Milwaukee I could bring it along and you could try it. If it works for you I'd make a hell of a deal for you on it. It it doesn't work, just give it back.

Larry

Smile

78 Royale w/500 Caddy
Menomonie, WI.

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Re: [GMCnet] SS single Muffler installation [message #84554 is a reply to message #84542]

Fri, 14 May 2010 12:01

Mr ERFisher

Messages: 7117
Registered: August 2005

Karma: 2

Senior Member

great looking ramp

I would have put a stainless flex after the Y, lots of stress on the headers
from the engine rocking

gene

--
Gene Fisher -- 74-23,77PB/ore/ca
�Give a man a fish; you have fed him for today --- give him a URL and
-------
http://gmcmotorhome.info/
Alternator Protection Cable
http://gmcmotorhome.info/APC.html
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Re: [GMCnet] SS single Muffler installation [message #84558 is a reply to message #84499]

Fri, 14 May 2010 12:11

jw mills

Messages: 199
Registered: September 2006

Karma: -30

Senior Member

If you can't do better locally try this:
<http://www.plumbingstore.com/tubing_copper.html>
--
Jim Mills
Greeley, CO
1973 CanyonLands 260 TZE-063V100731(under renovation)
1973 Glacier 230 TZE-033V101993

On Fri, 2010-05-14 at 07:37 -0500, Jon Payne wrote:

>
> I saw the coil roll of copper Lowes. It is definitely not soft copper. Also they do not have the right kind of fittings. Man I hope this is going to be a PIA to find!
>
> JP
>
>
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Re: [GMCnet] SS single Muffler installation [message #84914 is a reply to message #84554]

Mon, 17 May 2010 08:18

Tangerine

Messages: 192
Registered: February 2004
Location: Livonia, MI

Karma: 0

Senior Member

I have the Thorley headers and 2 mufflers up front. All Stainless Steel except the tail pipe. It is assembled with the clamps that are the sleeve with 2 bolts. It is very ridged. I have already had to replace one of the gaskets. I think it is because there is no give when the engine rocks. Is there a flexible pipe that I can put in btw the mufflers and the headers? The muffler on the left side is hanging down lower that I think it should. The pipe (btw header and muffler) is bent in such a way that I can not just cut it shorter. I did cut about 1" off just to get it to fit in the first place. Are the left and right down pipes the same? Maybe I have them on the wrong sides.
Has anyone else had this problem??

Gary W. Mills (Livonia MI)
. ___________
./_][__][] []| 1974 GMC M/H
.*O-------OO-* Painted Desert
"Tangerine Dream" W/New Frame

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Re: [GMCnet] SS single Muffler installation [message #84920 is a reply to message #84914]

Mon, 17 May 2010 08:42

Dennis S

Messages: 3046
Registered: November 2005

Karma: 2

Senior Member

Gary,

When I first installed the Thorley headers I "discovered" that the adapters from the headers to the mufflers were different lengths. Calls to the GMC supplier netted differing opinions on which side should be the shorter -- so I had to trial and error which worked for my coach.

Dennis Sexton
73 GMC
Germantown, TN
USA

-----Original Message-----
From: Gary W. Mills <daveel@ix.netcom.com>
To: gmclist@temp.gmcnet.org
Sent: Mon, May 17, 2010 8:18 am
Subject: Re: [GMCnet] SS single Muffler installation

I have the Thorley headers and 2 mufflers up front. All Stainless Steel except
he tail pipe. It is assembled with the clamps that are the sleeve with 2 bolts.
t is very ridged. I have already had to replace one of the gaskets. I think it
s because there is no give when the engine rocks. Is there a flexible pipe that
can put in btw the mufflers and the headers? The muffler on the left side is
anging down lower that I think it should. The pipe (btw header and muffler) is
ent in such a way that I can not just cut it shorter. I did cut about 1" off
ust to get it to fit in the first place. Are the left and right down pipes the
ame? Maybe I have them on the wrong sides.
as anyone else had this problem??
Gary W. Mills (Livonia MI)
. ___________
./_][__][] []| 1974 GMC M/H
.*O-------OO-* Painted Desert
"Tangerine Dream" W/New Frame
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Dennis S
73 Painted Desert 230
Memphis TN Metro

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