Home » Public Forums » GMCnet » Resonator location
Resonator location [message #343679] |
Sun, 26 May 2019 05:52 |
ree_eric
Messages: 43 Registered: February 2004 Location: Alexandria, Ontario, Cana...
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Looking for the most effective place to put the installed inside the pipe auger resonator in a 3" rear muffler system.
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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Re: Resonator location [message #343687 is a reply to message #343682] |
Sun, 26 May 2019 09:39 |
ree_eric
Messages: 43 Registered: February 2004 Location: Alexandria, Ontario, Cana...
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Can't use that position as the 2 90s are wielded there but I could put it just before the straight pipe to the rear. Not were it shows in the picture.
http://www.gmcmhphotos.com/photos/member-galleries/p66425-exhaust-front.html
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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Re: [GMCnet] Resonator location [message #343689 is a reply to message #343687] |
Sun, 26 May 2019 11:13 |
James Hupy
Messages: 6806 Registered: May 2010
Karma: -62
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Leave it out. If you get a "Raaaaappppp" sound out the tailpipe, use a
"Racket Buster" tailpipe extension, or a convoluted section in the last 3
or 4 feet of the tailpipe. Both are effective, and cheap and non
restrictive.
Jim Hupy
On Sun, May 26, 2019, 9:07 AM Eric Bornstein via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Can't use that position as the 2 90s are wielded there but I could put it
> just before the straight pipe to the rear. Not were it shows in the
> picture.
>
>
> http://www.gmcmhphotos.com/photos/member-galleries/p66425-exhaust-front.html
>
> http://www.gmcmhphotos.com/photos/data/500/Exhaust_Front.jpg
> --
> Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over
> blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux
> vacuum,
> fuel tank sealing, rebuilt senders and new rubber, propane hot water
> heater.) Alexandria, Ontario, Canada
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Re: [GMCnet] Resonator location [message #343715 is a reply to message #343689] |
Mon, 27 May 2019 09:23 |
ree_eric
Messages: 43 Registered: February 2004 Location: Alexandria, Ontario, Cana...
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Don't like the restriction so I may leave it out and if I have a drone I may try a resonator tube. I will try the exhaust tip first.
https://www.performancetrucks.net/forums/gm-engine-exhaust-performance-21/how-build-exhaust-resonator-tube-eliminate-drone-489463/page2/
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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Re: [GMCnet] Resonator location [message #343721 is a reply to message #343719] |
Mon, 27 May 2019 11:55 |
jimk
Messages: 6734 Registered: July 2006 Location: Belmont, CA
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Bob,
You know if you put on more parts, that can create more issues.
Sound is something that need to be addressed, I know that the single
muffler has that characteristic , so you can consider one. I think Larry
Weidner did something to resolve that issue.
Using cheap mufflers is a poor decision as you never see the condition. We
supply the most robust units so we do not have these issues.
On Mon, May 27, 2019 at 9:44 AM Bob Dunahugh via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Is a resonator required on systems with one muffler at the rear? I had an
> $80 double wrapped, two year old muffler. Have a seam come apart. That
> caught my floor on fire. So I put a muffle heat shield in above the two
> front mufflers. Then installed two 40 series Flow Master, welded mufflers.
> Very strong. I fine the sound fine. But could use a resonator alittle
> between 1300 to1500 RPM. But then again. I'm not in that RPM range for any
> real length of time. Bob Dunahugh 78 Royale 403
> _______________________________________________
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--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
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Jim Kanomata
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jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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Re: [GMCnet] Resonator location [message #343722 is a reply to message #343715] |
Mon, 27 May 2019 12:37 |
James Hupy
Messages: 6806 Registered: May 2010
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G.M. used exhaust pipes that had unique depressions strategically
positioned around the pipe that performed the duties of mufflers. But, they
had as much restriction as mufflers of the day, and were just as expensive.
Jim Hupy
On Mon, May 27, 2019, 10:30 AM Eric Bornstein via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Don't like the restriction so I may leave it out and if I have a drone I
> may try a resonator tube. I will try the exhaust tip first.
>
>
> https://www.performancetrucks.net/forums/gm-engine-exhaust-performance-21/how-build-exhaust-resonator-tube-eliminate-drone-489463/page2/
> --
> Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over
> blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux
> vacuum,
> fuel tank sealing, rebuilt senders and new rubber, propane hot water
> heater.) Alexandria, Ontario, Canada
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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Re: [GMCnet] Resonator location [message #343824 is a reply to message #343723] |
Fri, 31 May 2019 18:13 |
ree_eric
Messages: 43 Registered: February 2004 Location: Alexandria, Ontario, Cana...
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the 3" pipe that passes through the holes in the frame is held by silicon donuts in most of the frames. The double frame that supports the bogies does not have one. My pipe is touching the edge of the hole, am I going to have vibration or noise problems with this? What have others done with 3" pipes? Not looking forward to removing the pipe if fixing involves grinding the hole bigger.
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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Re: [GMCnet] Resonator location [message #343825 is a reply to message #343824] |
Fri, 31 May 2019 20:00 |
sgltrac
Messages: 2797 Registered: April 2011
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If you install a flex joint upstream then you can weld a tab to the pipe
and bolt it directly to that xmember if it starts rattling.
Sully
Bellevue wa
On Fri, May 31, 2019 at 5:39 PM Eric Bornstein via Gmclist <
gmclist@list.gmcnet.org> wrote:
> the 3" pipe that passes through the holes in the frame is held by silicon
> donuts in most of the frames. The double frame that supports the bogies does
> not have one. My pipe is touching the edge of the hole, am I going to
> have vibration or noise problems with this? What have others done with 3"
> pipes? Not looking forward to removing the pipe if fixing involves
> grinding the hole bigger.
> --
> Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over
> blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux
> vacuum,
> fuel tank sealing, rebuilt senders and new rubber, propane hot water
> heater.) Alexandria, Ontario, Canada
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
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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] Resonator location [message #343829 is a reply to message #343825] |
Fri, 31 May 2019 22:47 |
jimk
Messages: 6734 Registered: July 2006 Location: Belmont, CA
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Vibration is not a concern as the muffler fits snugly against the frame. We
have installed about 30 of these units with the 3" muffler,
On Fri, May 31, 2019 at 6:39 PM Todd Sullivan via Gmclist <
gmclist@list.gmcnet.org> wrote:
> If you install a flex joint upstream then you can weld a tab to the pipe
> and bolt it directly to that xmember if it starts rattling.
>
> Sully
> Bellevue wa
>
> On Fri, May 31, 2019 at 5:39 PM Eric Bornstein via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> the 3" pipe that passes through the holes in the frame is held by silicon
>> donuts in most of the frames. The double frame that supports the bogies
> does
>> not have one. My pipe is touching the edge of the hole, am I going to
>> have vibration or noise problems with this? What have others done with 3"
>> pipes? Not looking forward to removing the pipe if fixing involves
>> grinding the hole bigger.
>> --
>> Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over
>> blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler,
> aux
>> vacuum,
>> fuel tank sealing, rebuilt senders and new rubber, propane hot water
>> heater.) Alexandria, Ontario, Canada
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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Re: [GMCnet] Resonator location [message #343837 is a reply to message #343829] |
Sat, 01 June 2019 10:37 |
ree_eric
Messages: 43 Registered: February 2004 Location: Alexandria, Ontario, Cana...
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Thanks for the advice. Now for the resonator tube. I was going to wait till I tested to see if I had any resonance but it is easier to weld it in while it is out on the floor. I have the 3" pipe leftover and research on the net suggests that 32" long is good for eliminating resonance from a V8 at around 2200 rpm. 32" is where the piece of wood is. Thoughts?
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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Re: [GMCnet] Resonator location [message #343839 is a reply to message #343837] |
Sat, 01 June 2019 16:03 |
jimk
Messages: 6734 Registered: July 2006 Location: Belmont, CA
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You should have taken the two pipes and joined it to 3".
Look at our website and see how we do ours. Your chocking it down.
On Sat, Jun 1, 2019 at 11:17 AM Eric Bornstein via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Thanks for the advice. Now for the resonator tube. I was going to wait
> till I tested to see if I had any resonance but it is easier to weld it in
> while it is out on the floor. I have the 3" pipe leftover and research on
> the net suggests that 32" long is good for eliminating resonance from a V8
> at around 2200 rpm. 32" is where the piece of wood is. Thoughts?
>
> http://www.gmcmhphotos.com/photos/data/3/Resonator_tube.jpg
> --
> Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over
> blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux
> vacuum,
> fuel tank sealing, rebuilt senders and new rubber, propane hot water
> heater.) Alexandria, Ontario, Canada
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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Re: [GMCnet] Resonator location [message #343851 is a reply to message #343839] |
Sun, 02 June 2019 12:11 |
ree_eric
Messages: 43 Registered: February 2004 Location: Alexandria, Ontario, Cana...
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Don't see where my restriction is. Is it at the Y? The 3" pipe I would add is T'd off the 3". Where do I find how you do it on your site?
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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Re: [GMCnet] Resonator location [message #343852 is a reply to message #343851] |
Sun, 02 June 2019 13:10 |
jimk
Messages: 6734 Registered: July 2006 Location: Belmont, CA
Karma: 9
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Eric,
Go to our we site under exhaust and click on the pictures and you'll see
how the two 2.5 join in to the 3".
Your combining 2.5 to 2.5 from the pic I see.
On Sun, Jun 2, 2019 at 10:32 AM Eric Bornstein via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Don't see where my restriction is. Is it at the Y? The 3" pipe I would add
> is T'd off the 3". Where do I find how you do it on your site?
> --
> Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over
> blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux
> vacuum,
> fuel tank sealing, rebuilt senders and new rubber, propane hot water
> heater.) Alexandria, Ontario, Canada
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,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] Resonator location [message #343853 is a reply to message #343689] |
Sun, 02 June 2019 13:13 |
jimk
Messages: 6734 Registered: July 2006 Location: Belmont, CA
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The way LarryW did it is correct.
On Sun, Jun 2, 2019 at 11:10 AM Jim Kanomata wrote:
> Eric,
> Go to our we site under exhaust and click on the pictures and you'll see
> how the two 2.5 join in to the 3".
> Your combining 2.5 to 2.5 from the pic I see.
>
> On Sun, Jun 2, 2019 at 10:32 AM Eric Bornstein via Gmclist gmclist@list.gmcnet.org> wrote:
>
>> Don't see where my restriction is. Is it at the Y? The 3" pipe I would
>> add is T'd off the 3". Where do I find how you do it on your site?
>> --
>> Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over
>> blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux
>> vacuum,
>> fuel tank sealing, rebuilt senders and new rubber, propane hot water
>> heater.) Alexandria, Ontario, Canada
>>
>> _______________________________________________
>> GMCnet mailing list
>> Unsubscribe or Change List Options:
>> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>>
>
>
> --
> Jim Kanomata
> Applied/GMC, Newark,CA
> jimk@appliedairfilters.com
> http://www.appliedgmc.com
> 1-800-752-7502
>
--
Jim Kanomata
Applied/GMC, Newark,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] Resonator location [message #343855 is a reply to message #343853] |
Sun, 02 June 2019 17:00 |
ree_eric
Messages: 43 Registered: February 2004 Location: Alexandria, Ontario, Cana...
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Jim,
The pipe at the junction of the Y is a 3", must be the poor quality picture of mine.
Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux vacuum, fuel tank sealing, rebuilt senders and new rubber, propane hot water heater.) Alexandria, Ontario, Canada
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Re: [GMCnet] Resonator location [message #343857 is a reply to message #343855] |
Sun, 02 June 2019 17:43 |
jimk
Messages: 6734 Registered: July 2006 Location: Belmont, CA
Karma: 9
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Ok , Thank you.
On Sun, Jun 2, 2019 at 3:01 PM Eric Bornstein via Gmclist <
gmclist@list.gmcnet.org> wrote:
> Jim,
> The pipe at the junction of the Y is a 3", must be the poor quality
> picture of mine.
> --
> Eric & Ree '74 ex-Sequoia (parts) '75 Eleganza (TB, exhaust x-over
> blocking plates, Manny reaction arms and discs, 3"exhaust rear muffler, aux
> vacuum,
> fuel tank sealing, rebuilt senders and new rubber, propane hot water
> heater.) Alexandria, Ontario, Canada
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
>
--
Jim Kanomata
Applied/GMC, Newark,CA
jimk@appliedairfilters.com
http://www.appliedgmc.com
1-800-752-7502
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
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Jim Kanomata
Applied/GMC
jimk@appliedairfilters.com
www.appliedgmc.com
1-800-752-7502
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