| [GMCnet] muffler time [message #264470] |
Sat, 18 October 2014 10:54  |
Len Novak
Messages: 676
Registered: February 2004
Location: Las Vegas, NV
Karma: -3
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Senior Member |
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Time to replace the exhaust in the coach before it falls off.
Going with a 3" pipe but the question is which type/brand of muffler or
mufflers to use?
Thanks,
Len and Pat
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Fallbrook, CA new email: B52Rule@Roadrunner.Com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Las Vegas, NV new email: B52sRule@Gmail.com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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| Re: [GMCnet] muffler time [message #264473 is a reply to message #264470] |
Sat, 18 October 2014 12:04  |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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You need to decide first whether you want 2 front mufflers or one rear muffler. Whichever system you go with, make sure you install a heat shield above the muffler. Dan burned a hole in the floor with a 2 muffler system and no heat shield. Another GMCer burned a coach to the ground with a rear muffler installation and no heat shield. With the 3" system you will also have to install new muffler bearings. That is those 3" id round silicone pipe mounts. Jim K. has them.
I would also install the heat shields between the pipe and the gas tanks. Again Jim K.
Come to think of it, Jim K. has all of the pieces that you need (mufflers, pipes, clamps, etc.). You might save time and effort just order the whole system for him. A few years back I watched 2 guys install the complete Jim K. system on a GMC on a hoist is less than 1 hour. No welding required.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] muffler time [message #264475 is a reply to message #264473] |
Sat, 18 October 2014 12:57 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Unless you enjoy regular exhaust "maintenance I would weld the system in as many locations as is practical to allow removal when needed for other repairs. Clamped joints are more likely to leak or come apart than welded. also flex joints between the manifolds and the rest if the system can help prevent future leaks from drivetrain movement and thermal expansion.
My 2c
Todd Sullivan
Sully
77 royale
Seattle
> On Oct 18, 2014, at 1:05 PM, Ken Burton wrote:
>
> You need to decide first whether you want 2 front mufflers or one rear muffler. Whichever system you go with, make sure you install a heat shield
> above the muffler. Dan burned a hole in the floor with a 2 muffler system and no heat shield. Another GMCer burned a coach to the ground with a rear
> muffler installation and no heat shield. With the 3" system you will also have to install new muffler bearings. That is those 3" id round silicone
> pipe mounts. Jim K. has them.
>
> I would also install the heat shields between the pipe and the gas tanks. Again Jim K.
>
> Come to think of it, Jim K. has all of the pieces that you need (mufflers, pipes, clamps, etc.). You might save time and effort just order the whole
> system for him. A few years back I watched 2 guys install the complete Jim K. system on a GMC on a hoist is less than 1 hour. No welding required.
>
> --
> Ken Burton - N9KB
> 76 Palm Beach
> Hebron, Indiana
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
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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] muffler time [message #264478 is a reply to message #264476] |
Sat, 18 October 2014 15:07 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
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Senior Member |
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Use the wide exhaust band clamps instead of the normal U shaped muffler clamp. Bands do not crush the fittings and can be removed without cutting.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
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| Re: [GMCnet] muffler time [message #264484 is a reply to message #264473] |
Sat, 18 October 2014 19:33 |
Len Novak
Messages: 676
Registered: February 2004
Location: Las Vegas, NV
Karma: -3
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Senior Member |
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Thanks for all the input. No hoist here. The guy in town has done several
GMCs' and is very familiar with the coaches. Should have it back by
Saturday.
Cheers,
Len and Pat
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Fallbrook, CA new email: B52Rule@Roadrunner.Com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Ken Burton
Sent: Saturday, October 18, 2014 10:05 AM
To: gmclist@temp.gmcnet.org
Subject: Re: [GMCnet] muffler time
You need to decide first whether you want 2 front mufflers or one rear
muffler. Whichever system you go with, make sure you install a heat shield
above the muffler. Dan burned a hole in the floor with a 2 muffler system
and no heat shield. Another GMCer burned a coach to the ground with a rear
muffler installation and no heat shield. With the 3" system you will also
have to install new muffler bearings. That is those 3" id round silicone
pipe mounts. Jim K. has them.
I would also install the heat shields between the pipe and the gas tanks.
Again Jim K.
Come to think of it, Jim K. has all of the pieces that you need (mufflers,
pipes, clamps, etc.). You might save time and effort just order the whole
system for him. A few years back I watched 2 guys install the complete Jim
K. system on a GMC on a hoist is less than 1 hour. No welding required.
--
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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GMCnet mailing list
Unsubscribe or Change List Options:
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_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Len and Pat Novak
1978 GMC Kingsley
The Beast II with dash lights that work and labels you can see!
Las Vegas, NV new email: B52sRule@Gmail.com
http://www.gmcmhphotos.com/photos/showgallery.php?cat=4375
www.bdub.net/novak/
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