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[GMCnet] Wear did the tail pipe come out in 78? [message #309002]

Tue, 18 October 2016 12:04

BobDunahugh

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Registered: October 2010
Location: Cedar Rapids, IA

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Did it come straight out the back. Or toward the side.

Bob Dunahugh

78 Royale
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Re: [GMCnet] Wear did the tail pipe come out in 78? [message #309011 is a reply to message #309002]

Tue, 18 October 2016 14:47

powerjon

Messages: 2446
Registered: January 2004

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Senior Member

I have seen some that go straight back under the bumper, but the factory tail pipe comes out the side. The side exit keeps the exhaust gases out of the low pressure directly behind the coach.

http://www.appliedgmc.com/prod.itml/icOid/666

The piece in the picture the tail pipe is the piece just below the muffler.

JR Wright
Michigan

> On Oct 18, 2016, at 1:04 PM, Bob Dunahugh wrote:
>
> Did it come straight out the back. Or toward the side.
>
> Bob Dunahugh
>
> 78 Royale

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J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan

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Re: [GMCnet] Wear did the tail pipe come out in 78? [message #309020 is a reply to message #309002]

Tue, 18 October 2016 20:01

JohnL455

Messages: 4447
Registered: October 2006
Location: Woodstock, IL

Karma: 12

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I have GM NOS long pipes and tailpipe on mine. I'll take a pic. I think they called the tailpipe a spout in parts speak.

John Lebetski
Woodstock, IL
77 Eleganza II

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Re: [GMCnet] Wear did the tail pipe come out in 78? [message #309060 is a reply to message #309002]

Wed, 19 October 2016 18:56

JohnL455

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Registered: October 2006
Location: Woodstock, IL

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Bob I have a photo of tailpipe but having trouble posting. PM me your phone number and I can text it.

John Lebetski
Woodstock, IL
77 Eleganza II

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Re: [GMCnet] Wear did the tail pipe come out in 78? [message #309070 is a reply to message #309060]

Wed, 19 October 2016 23:13

Bullitthead

Messages: 1411
Registered: November 2013

Karma: 5

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I can see why John was having trouble uploading...it was difficult this time. Here is a pic of my replaced tailpipe location. I copied the existing using my tubing machine after I cut it off up beside the black tank where it was rusted through and blowing on the tank. Knew I had to fix that before a disastrophy happened!It is in virtually the same place as the factory pipe if indeed that was the factory pipe that was rusted out when I got the coach.

http://www.gmcmhphotos.com/photos/nocat-pics/p61547-septoct-2015-050.html

Terry Kelpien ASE Master Technician 73 Glacier 260 Smithfield, Va.

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Re: [GMCnet] Wear did the tail pipe come out in 78? [message #309082 is a reply to message #309002]

Thu, 20 October 2016 09:07

Larry

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

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BobDunahugh wrote on Tue, 18 October 2016 12:04

Did it come straight out the back. Or toward the side.

Bob Dunahugh

78 Royale
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If you are into doing exhaust yourself, Jimmy K has that last turn-out pipe in 3" SS. I did my rear muffler system myself back in 2004. What a hastle. If I had to do it again, I'd buy the whole kit from Jimmy and be done with it. Here is a pic of that last pipe. Pic is from the album of my rear muffler system. JFWIW
http://www.gmcmhphotos.com/photos/rear-mounted-flowmaster/p6729.html

Larry

78 Royale w/500 Caddy
Menomonie, WI.

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Re: [GMCnet] Wear did the tail pipe come out in 78? [message #309113 is a reply to message #309082]

Thu, 20 October 2016 17:28

Keith V

Messages: 2337
Registered: March 2008
Location: Mounds View,MN

Karma: 0

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is there a known reason to go out to the side?Modern cars go straight out the back.

>
> BobDunahugh wrote on Tue, 18 October 2016 12:04
>> Did it come straight out the back. Or toward the side.
>>
>> Bob Dunahugh
>>
>> 78 Royale
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
> If you are into doing exhaust yourself, Jimmy K has that last turn-out pipe in 3" SS. I did my rear muffler system myself back in 2004. What a
> hastle. If I had to do it again, I'd buy the whole kit from Jimmy and be done with it. Here is a pic of that last pipe. Pic is from the album of my
> rear muffler system. JFWIW
> http://www.gmcmhphotos.com/photos/rear-mounted-flowmaster/p6729.html
> --
> Larry
> 78 Royale w/500 Caddy
> Menomonie, WI.
>
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Keith Vasilakes
Mounds View. MN
75 ex Royale GMC
ask me about MicroLevel
Cell, 763-732-3419
My427v8@hotmail.com

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Re: [GMCnet] Wear did the tail pipe come out in 78? [message #309115 is a reply to message #309002]

Thu, 20 October 2016 18:06

JohnL455

Messages: 4447
Registered: October 2006
Location: Woodstock, IL

Karma: 12

Senior Member

Tahoes Suburbans Silverados F150s still exit similar to the GMC. My guess is best evacuation without leaving carbon marks.

John Lebetski
Woodstock, IL
77 Eleganza II

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