Home » Public Forums » GMCnet » Stainless steel exhaust installation question
| Stainless steel exhaust installation question [message #217435] |
Thu, 08 August 2013 18:08  |
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Richard RV
Messages: 631
Registered: July 2012
Location: Full-timer for 12 years, ...
Karma: -17
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I'm getting ready to install the stainless exhaust I bought from Applied, and I'd like some feedback from people that have already installed one on their coach. Ken Henderson mentioned recently that he's going to weld up some sections as the band clamps aren't doing it.
Has anyone else run into this problem?
What locations are prone to loosening?
Any words of wisdom on what to do while I'm installing the exhaust to help minimize the problem?
I had thought that using the band clamps would simplify things down the road as I have a number of projects I want to get to, and repainting the frame is one of them.
Thanks.
Richard
'77 Birchaven TZE...777;
'76 Palm Beach under construction;
‘76 Edgemont waiting its turn
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| Re: [GMCnet] Stainless steel exhaust installation question [message #217438 is a reply to message #217435] |
Thu, 08 August 2013 18:17  |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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The one problem that I first had was the band clamps moved on the pipes after several months. The real problem was that I was not torquing the bolts tight enough. Jim K uses and air wrench to tighten the band clamps bolts. I personally torque them to 65 FT/Lbs and have not had any other issues since.
JR Wright
78 Buskirk Stretch
75 Avion
Michigan
On Aug 8, 2013, at 7:08 PM, Richard <GMC77Birchaven@yahoo.com> wrote:
>
>
> I'm getting ready to install the stainless exhaust I bought from Applied, and I'd like some feedback from people that have already installed one on their coach. Ken Henderson mentioned recently that he's going to weld up some sections as the band clamps aren't doing it.
>
> Has anyone else run into this problem?
> What locations are prone to loosening?
> Any words of wisdom on what to do while I'm installing the exhaust to help minimize the problem?
>
> I had thought that using the band clamps would simplify things down the road as I have a number of projects I want to get to, and repainting the frame is one of them.
>
> Thanks.
>
> Richard
> --
> '77 Birchaven TZE...777
> Rear bath, interior pretty much original (for now),
> rebuilt 455, 3.50 final, Caspro steering, Howell FI, EFI w/EBL, Springfield HEI, Thorley, 6 disks, Alcoas, 1 ton front end, working on a through the bumper hitch and SS exhaust.
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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: Stainless steel exhaust installation question [message #217449 is a reply to message #217435] |
Thu, 08 August 2013 19:07 |
chasingsummer
Messages: 434
Registered: May 2011
Location: asheboro, nc
Karma: 0
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Senior Member |
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When I did my exhaust I put exhaust pipe putty on seams before I attached the clamps. I dont remember product name, but it came from local auto parts store.Small tube. It was made to patch exhaust pipes and mufflers. If i remember correct I had to run engine after install to heat and cure product. I dont remember cost, but my cheep butt would not have bought it is was not cheep. I found it easy to work with, and did the job.
brian
brian
asheboro, nc
75 eleganza, 74 build
119k miles and counting,
DOG HOUSE
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| Re: [GMCnet] Stainless steel exhaust installation question [message #217718 is a reply to message #217481] |
Sat, 10 August 2013 22:42 |
jimk
Messages: 6734
Registered: July 2006
Location: Belmont, CA
Karma: 9
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Senior Member |
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Our joints on our kits are the slip in the band and because some on on the
net had problems, it tells me he did not do it properly.
Just by looking at the size of the bolts tells any mechanical person that
you can tighten it really hard. Our shop impacts are set to operate 110-130
ft/lbs of torque.
Also use you mechanical sense ad see which side you need to cover more with
the clamp, correct is that you need to cover about 1/8- 1/4 more on the
smaller unexpanded pipe.
I have told all our customer, if you break the band, I will send one out to
you n/c.
Our units being a slip in joint should not leak enough to worry.
On Thu, Aug 8, 2013 at 8:49 PM, Emery Stora <emerystora@me.com> wrote:
> When I invented the rear muffler system I found that the band clamps
> leaked a little. I found that using a small bead of Ultra Copper RTV at the
> seam before applying the band clamp would seal them well.
>
> Also there are short band clamps and long band clamps. The long ones cost
> a little more but hold much better.
>
> Emery Stora
>
> On Aug 8, 2013, at 5:35 PM, Larry <weidnerl@wwt.net> wrote:
>
> >
> >
> > There is always a chance that a band clamp will not seal completely.
> Most of the time it really doesn't matter. Eventually any small leaks will
> corrode shut. However, if you are running an EFI and your O2 is down
> stream of a leaky band clamp, that could be a big deal. IMO, joints
> upstream of the O2 cannot leak. So...where is your O2?
> >
> > I have a NB right next to the exhaust manifold, and the WB is after the
> "Y". So I had all of the pipes up stream of the O2 welded. JWID
> > --
> > Larry :)
> > 78 Royale w/500 Caddy
> > Menomonie, WI.
> > _______________________________________________
> > 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:
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--
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] Stainless steel exhaust installation question [message #217722 is a reply to message #217718] |
Sun, 11 August 2013 01:14 |
sgltrac
Messages: 2797
Registered: April 2011
Karma: 1
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Senior Member |
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Ahh hu hu. He said joints.
Todd Sullivan
Sully
77 royale
Seattle
On Aug 10, 2013, at 8:42 PM, Jim Kanomata <jimkanomata@gmail.com> wrote:
> Our joints on our kits are the slip in the band and because some on on the
> net had problems, it tells me he did not do it properly.
> Just by looking at the size of the bolts tells any mechanical person that
> you can tighten it really hard. Our shop impacts are set to operate 110-130
> ft/lbs of torque.
> Also use you mechanical sense ad see which side you need to cover more with
> the clamp, correct is that you need to cover about 1/8- 1/4 more on the
> smaller unexpanded pipe.
> I have told all our customer, if you break the band, I will send one out to
> you n/c.
> Our units being a slip in joint should not leak enough to worry.
>
> On Thu, Aug 8, 2013 at 8:49 PM, Emery Stora <emerystora@me.com> wrote:
>
>> When I invented the rear muffler system I found that the band clamps
>> leaked a little. I found that using a small bead of Ultra Copper RTV at the
>> seam before applying the band clamp would seal them well.
>>
>> Also there are short band clamps and long band clamps. The long ones cost
>> a little more but hold much better.
>>
>> Emery Stora
>>
>> On Aug 8, 2013, at 5:35 PM, Larry <weidnerl@wwt.net> wrote:
>>
>>>
>>>
>>> There is always a chance that a band clamp will not seal completely.
>> Most of the time it really doesn't matter. Eventually any small leaks will
>> corrode shut. However, if you are running an EFI and your O2 is down
>> stream of a leaky band clamp, that could be a big deal. IMO, joints
>> upstream of the O2 cannot leak. So...where is your O2?
>>>
>>> I have a NB right next to the exhaust manifold, and the WB is after the
>> "Y". So I had all of the pipes up stream of the O2 welded. JWID
>>> --
>>> Larry :)
>>> 78 Royale w/500 Caddy
>>> Menomonie, WI.
>>> _______________________________________________
>>> 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
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
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Sully
77 Royale basket case.
Future motorhome land speed record holder(bucket list)
Seattle, Wa.
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