Home » Public Forums » GMCnet » Headers and exhaust
| Headers and exhaust [message #171466] |
Wed, 30 May 2012 23:05  |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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Ah, the fun and games.
Finally getting to the change out on the headers and exhaust.
Nine out of ten manifold bolts came out with only some complaining.
Number ten? Hah! broke right under the bolt head. No luck getting it out today, will try one more time tomorrow, then break out the giant drilling machine.
Left side header is in place, and I'll retorque again in the morning. Really, the hardest part was just fitting it over the oil dipstick tube. (And constantly dropping a wrench.)
When all is done, I'll post some pictures.
Oh, and the manifolds that were in? Looked fine; no cracks, no breaks. Although there was very little gasket remaining under the right side manifold.
If anyone wants the manifolds, make me a reasonable offer+shipping.
I'll post further progress if there is any.
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] Headers and exhaust [message #171483 is a reply to message #171466] |
Thu, 31 May 2012 06:40  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
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Senior Member |
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Need a set, but shipping from Tacoma is enough to send me looking locally.
--johnny
'76 23' transmode
'76 palm beach - with a 'spit' on the right side.
From: Mitch <Yowzax3@harbornet.com>
To: gmclist@temp.gmcnet.org
Sent: Thursday, May 31, 2012 12:05 AM
Subject: [GMCnet] Headers and exhaust
Ah, the fun and games.
Finally getting to the change out on the headers and exhaust.
Nine out of ten manifold bolts came out with only some complaining.
Number ten? Hah! broke right under the bolt head. No luck getting it out today, will try one more time tomorrow, then break out the giant drilling machine.
Left side header is in place, and I'll retorque again in the morning. Really, the hardest part was just fitting it over the oil dipstick tube. (And constantly dropping a wrench.)
When all is done, I'll post some pictures.
Oh, and the manifolds that were in? Looked fine; no cracks, no breaks. Although there was very little gasket remaining under the right side manifold.
If anyone wants the manifolds, make me a reasonable offer+shipping.
I'll post further progress if there is any.
--
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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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] Headers and exhaust [message #171512 is a reply to message #171466] |
Thu, 31 May 2012 10:58 |
Ray Erspamer
Messages: 1707
Registered: May 2007
Location: Milwaukee Wisconsin
Karma: -3
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Senior Member |
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There ALWAYS has to be ONE BUZZARD bolt in a set.....hope you can get it out.
Ray
Ray & Lisa
78 Royale "Great Lakes Eagle"
Center Kitchen TZE368V101144
Wauwatosa, Wisconsin 53226
Email: 78GMC-Royale@att.net
414-745-3188
Web Site: http://ray-lisa.page.tl/
________________________________
From: Mitch <Yowzax3@harbornet.com>
To: gmclist@temp.gmcnet.org
Sent: Wed, May 30, 2012 11:05:06 PM
Subject: [GMCnet] Headers and exhaust
Ah, the fun and games.
Finally getting to the change out on the headers and exhaust.
Nine out of ten manifold bolts came out with only some complaining.
Number ten? Hah! broke right under the bolt head. No luck getting it out today,
will try one more time tomorrow, then break out the giant drilling machine.
Left side header is in place, and I'll retorque again in the morning. Really,
the hardest part was just fitting it over the oil dipstick tube. (And constantly
dropping a wrench.)
When all is done, I'll post some pictures.
Oh, and the manifolds that were in? Looked fine; no cracks, no breaks. Although
there was very little gasket remaining under the right side manifold.
If anyone wants the manifolds, make me a reasonable offer+shipping.
I'll post further progress if there is any.
--
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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GMCnet mailing list
Unsubscribe or Change List Options:
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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] Headers and exhaust [message #171597 is a reply to message #171512] |
Fri, 01 June 2012 00:31 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Johnny,
You should call me as I can save you freight.
On Thu, May 31, 2012 at 8:58 AM, Ray Erspamer <78gmc-royale@att.net> wrote:
> There ALWAYS has to be ONE BUZZARD bolt in a set.....hope you can get it out.
>
> Â Ray
>
>
> Ray & Lisa
> 78 Royale "Great Lakes Eagle"
> Center Kitchen  TZE368V101144
> Wauwatosa, Wisconsin 53226
> Email: 78GMC-Royale@att.net
> 414-745-3188
> Web Site: http://ray-lisa.page.tl/
>
>
>
>
> ________________________________
> From: Mitch <Yowzax3@harbornet.com>
> To: gmclist@temp.gmcnet.org
> Sent: Wed, May 30, 2012 11:05:06 PM
> Subject: [GMCnet] Headers and exhaust
>
>
>
> Ah, the fun and games.
> Finally getting to the change out on the headers and exhaust.
> Nine out of ten manifold bolts came out with only some complaining.
> Number ten? Hah! broke right under the bolt head. No luck getting it out today,
> will try one more time tomorrow, then break out the giant drilling machine.
> Left side header is in place, and I'll retorque again in the morning. Really,
> the hardest part was just fitting it over the oil dipstick tube. (And constantly
> dropping a wrench.)
> When all is done, I'll post some pictures.
> Oh, and the manifolds that were in? Looked fine; no cracks, no breaks. Although
> there was very little gasket remaining under the right side manifold.
> If anyone wants the manifolds, make me a reasonable offer+shipping.
> I'll post further progress if there is any.
> --
> Mitch
> Tacoma, Wa.
> '80 Spitfire
> '03 Windstar
> X(very)'76 PB 26 "The Beast"
> Where it rains, always.
>
> It's wet, No sun, Gray.
> Go to Oregon.
> _______________________________________________
> 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] Headers and exhaust [message #171681 is a reply to message #171597] |
Fri, 01 June 2012 21:32 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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Whoopee!
Put acetylene torch to the bolt. It took two applications of heat, but I was able to back the bolt out.
Now the other header is in.
I'll get back at the rest of the installation on Saturday, I just don't feel like laying on wet ground anymore.
Just in curiosity, anyone know what the manifolds weight? I could take a scale out to the garage, but why do that when I can just ask?
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] Headers and exhaust [message #171929 is a reply to message #171681] |
Sun, 03 June 2012 22:24 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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Lordy! This thing keeps multiplying!
Now, the propane line must be moved to get the muffler in place.
I think I'll extend the hose coming off the tank, going thru the compartment floor further aft. Then loop thru openings between frame and floor where the floor slopes up, and continue to the existing line. Since propane only supplies stove and furnace I only have a single feed line on driver side of coach.
Oh, and while in the gas compartment; all the spray (or glued) on insulation is falling apart. Any suggestions to replace that?
God I'm having fun! (?) 
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] Headers and exhaust [message #173943 is a reply to message #171929] |
Tue, 19 June 2012 11:43 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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Latest update! Everything is in.
I had two new pieces of propane line built, moving it some what away from the new muffler.
The muffler itself was a bear to get in; the fit between the last cross-wise frame and the diagonal aft was tighter than you could imagine. The muffler is actually 1/2 inch out of alignment on the back end. To make the tail pipe work I ended up grinding an enlarged hole in the diagonal, and then fitting in the tail pipe.
I had thought I would also add heat shields at the gas tanks, but I really can't see how that might be done until the tanks are dropped out.
Pictures will be posted soon.
The old manifolds will be posted at the swap meet.| Mitch wrote on Sun, 03 June 2012 20:24 |
Lordy! This thing keeps multiplying!
Now, the propane line must be moved to get the muffler in place.
I think I'll extend the hose coming off the tank, going thru the compartment floor further aft. Then loop thru openings between frame and floor where the floor slopes up, and continue to the existing line. Since propane only supplies stove and furnace I only have a single feed line on driver side of coach.
Oh, and while in the gas compartment; all the spray (or glued) on insulation is falling apart. Any suggestions to replace that?
God I'm having fun! (?)
|
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] Headers and exhaust [message #173995 is a reply to message #173943] |
Wed, 20 June 2012 02:02 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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I hope you put a heat shield on top of the rear muffler. One coach caught fire a few years back because the heat shield was missing.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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| Re: [GMCnet] Headers and exhaust [message #174021 is a reply to message #173995] |
Wed, 20 June 2012 08:49 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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The muffler came with a shield attached and I added additional aluminum sheeting above the muffler.
If I were to re-design that muffler, I'd make it a bit thinner and wider to provide more air space above.| Ken Burton wrote on Wed, 20 June 2012 00:02 |
I hope you put a heat shield on top of the rear muffler. One coach caught fire a few years back because the heat shield was missing.
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Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] Headers and exhaust [message #174050 is a reply to message #174021] |
Wed, 20 June 2012 11:40 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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All this talk (actually any)about fires has me wondering; how have others treated the area above the rear muffler? Given the zero clearance between the muffler and the aluminum sheet above it, and the foam insulation between that and the plywood floor, How have you tackled that area?| Mitch wrote on Wed, 20 June 2012 06:49 |
The muffler came with a shield attached and I added additional aluminum sheeting above the muffler.
If I were to re-design that muffler, I'd make it a bit thinner and wider to provide more air space above.| Ken Burton wrote on Wed, 20 June 2012 00:02 |
I hope you put a heat shield on top of the rear muffler. One coach caught fire a few years back because the heat shield was missing.
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Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] Headers and exhaust [message #174135 is a reply to message #174050] |
Wed, 20 June 2012 21:20 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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Mitch
He is the pictures of the first one done. I did this back about 2003 and most are still doing it this way.
http://www.gmcmhphotos.com/photos/g3123-headers-3-quot-pipe-inline-rear-muffler.html
The order of the pictures are a bit messed up but they are all there.
Emery Stora
On Jun 20, 2012, at 10:40 AM, Mitch wrote:
>
>
> All this talk (actually any)about fires has me wondering; how have others treated the area above the rear muffler? Given the zero clearance between the muffler and the aluminum sheet above it, and the foam insulation between that and the plywood floor, How have you tackled that area?Mitch wrote on Wed, 20 June 2012 06:49
>> The muffler came with a shield attached and I added additional aluminum sheeting above the muffler.
>> If I were to re-design that muffler, I'd make it a bit thinner and wider to provide more air space above.Ken Burton wrote on Wed, 20 June 2012 00:02
>>> I hope you put a heat shield on top of the rear muffler. One coach caught fire a few years back because the heat shield was missing.
>
>
> --
> Mitch
> Tacoma, Wa.
> '80 Spitfire
> '03 Windstar
> X(very)'76 PB 26 "The Beast"
> Where it rains, always.
>
> It's wet, No sun, Gray.
> Go to Oregon.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Headers and exhaust [message #174143 is a reply to message #174135] |
Wed, 20 June 2012 22:38 |
Mitch
Messages: 272
Registered: May 2009
Location: Tacoma, Wa
Karma: 0
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Senior Member |
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Emery, thanks for the pictures. They do,and don't, help I see where you banded a shield to the top of the muffler, and I have a some what similar solution, but I'm wondering more about what has been done above that.
Have you been removing the foam above the aluminum and under the plywood? Are you then allowing more air space above the muffler?
Mitch
Tacoma, Wa.
'80 Spitfire
'03 Windstar
'77 Jaguar XJ6-C
X(very)'76 PB 26 "The Beast"
Where it rains, always.
It's wet, No sun, Gray.
Go to Oregon.
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| Re: [GMCnet] Headers and exhaust [message #174148 is a reply to message #174143] |
Wed, 20 June 2012 22:46 |
emerystora
Messages: 4442
Registered: January 2004
Karma: 13
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Senior Member |
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No, there is no air space above the shield but there is plenty of air space between the muffler and the shield.
At first I checked the temp of the floor above the muffler but it wasn't that hot.
It has been there for 9 years now with no problem.
Emery Stora
On Jun 20, 2012, at 9:38 PM, Mitch <Yowzax3@harbornet.com> wrote:
>
>
> Emery, thanks for the pictures. They do,and don't, help I see where you banded a shield to the top of the muffler, and I have a some what similar solution, but I'm wondering more about what has been done above that.
> Have you been removing the foam above the aluminum and under the plywood? Are you then allowing more air space above the muffler?
> --
> Mitch
> Tacoma, Wa.
> '80 Spitfire
> '03 Windstar
> X(very)'76 PB 26 "The Beast"
> Where it rains, always.
>
> It's wet, No sun, Gray.
> Go to Oregon.
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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| Re: [GMCnet] Headers and exhaust [message #174164 is a reply to message #174143] |
Thu, 21 June 2012 03:03 |
Ken Burton
Messages: 10030
Registered: January 2004
Location: Hebron, Indiana
Karma: 10
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Senior Member |
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I also followed Emery's example and installed a rear muffler exactly the same way Emery did. I have had no problems.
The only one I heard of burning caught fire because someone had the job done and the mechanic either forgot or did not bother to install the heat shield.
The Flowmaster provided heat shield did the job just fine for me.
There is plenty of cooling airflow around the muffler with that heat shield installed. I did absolutely nothing to the floor.
I did reroute the propane line a little when I did the job.
Thank Emery for originally developing this system.
Jim K. also sells this complete rear muffler system.
Ken Burton - N9KB
76 Palm Beach
Hebron, Indiana
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