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Re: [GMCnet] muffler and placement [message #159631 is a reply to message #159628]

Wed, 08 February 2012 12:34

emerystora

Messages: 4442
Registered: January 2004

Karma:

Senior Member

Sully

The way that the intake manifold crosses from one side to the other means that the fuel from both injectors is going to pistons on the left and on the right of the engine. So, taking a O2 reading on one side of the exhaust means that I am really getting both "sides" of the engine. I think that you will find that most people hook up their TBI system this way.

The farther you get from the engine block the more that you might need a heated O2 sensor. I have always used one.

Emery Stora

On Feb 8, 2012, at 11:04 AM, sgltrac wrote:

>
>
> Thanks to all who replied. It seems that there are two camps of thought on muffler placement, front and rear. There also seem to be single muffler and dual muffler groups.
> I spoke with Miguel moments ago and he is adamant about single muffler for this application due past problems with one side plugging(was it passenger??) and forcing exhaust through the crossover which we all know is a bad thing. I cannot fit a suitable muffler in the rear of my coach without substantial modifications to the frame,muffler or both and there is a ton of room for a muffler in the original location. Although Keith's mod looks interesting I do not have any extra time to perform open muffler surgery. Emery's install looks really good as well but he has much more clearance inboard of the frame than I due to the placement of my waste tanks.
> I mentioned the noise issue stated by Larry to Miguel and he thought that Larry must have had one of the smaller "short" versions of the SpinTech and that the larger version which he recommends is the quietest muffler he has been able to find for our coaches. Quieter than the flowmaster 70 "by a lot".
> So I am waiting for Miguel to MMS me a photo of the muffler he is suggesting and will go from there. I will take photos of the install
> Emery, I see you put the oxygen sensor in one side of the exhaust before the Y. Is this the ideal placement for good readings(one half of the motor) or would install down stream of the Y be better???
>
> Thanks
> --
> Sully
> 77 Royale basket case.
> Future motorhome land speed record holder(bucket list)
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Emery Stora
77 Kingsley
Santa Fe, NM

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[Message index]

		muffler and placement By: sgltrac on Tue, 07 February 2012 19:37
		Re: muffler and placement By: Larry on Tue, 07 February 2012 20:04
		Re: muffler and placement By: Keith V on Tue, 07 February 2012 21:14
		Re: muffler and placement By: Dennis S on Tue, 07 February 2012 20:55
		Re: muffler and placement By: gbarrow2 on Tue, 07 February 2012 21:51
		Re: muffler and placement By: mike miller on Wed, 08 February 2012 05:25
		Re: [GMCnet] muffler and placement By: Mr ERFisher on Wed, 08 February 2012 05:31
		Re: muffler and placement By: Larry on Wed, 08 February 2012 07:07
		Re: [GMCnet] muffler and placement By: USAussie on Wed, 08 February 2012 08:24
		Re: muffler and placement By: GeorgeRud on Tue, 07 February 2012 21:52
		Re: muffler and placement By: Ken Burton on Wed, 08 February 2012 01:42
		Re: [GMCnet] muffler and placement By: emerystora on Wed, 08 February 2012 10:06
		Re: [GMCnet] muffler and placement By: emerystora on Wed, 08 February 2012 10:08
		Re: [GMCnet] muffler and placement By: Ken Burton on Wed, 08 February 2012 20:35
		Re: muffler and placement By: Keith V on Wed, 08 February 2012 08:08
		Re: muffler and placement By: sgltrac on Wed, 08 February 2012 12:04
		Re: [GMCnet] muffler and placement By: emerystora on Wed, 08 February 2012 12:34
		Re: [GMCnet] muffler and placement By: Keith V on Wed, 08 February 2012 12:48
		Re: [GMCnet] muffler and placement By: rvanwin on Wed, 08 February 2012 21:57
		Re: [GMCnet] muffler and placement By: sgltrac on Wed, 08 February 2012 14:32
		Re: [GMCnet] muffler and placement By: Mr ERFisher on Wed, 08 February 2012 14:44
		Re: [GMCnet] muffler and placement By: emerystora on Wed, 08 February 2012 14:44
		Re: [GMCnet] muffler and placement By: James Hupy on Wed, 08 February 2012 14:45
		Re: [GMCnet] muffler and placement By: sgltrac on Wed, 08 February 2012 17:10
		Re: muffler and placement By: PETEinLongBeach on Wed, 08 February 2012 12:47
		Re: muffler and placement By: tphipps on Wed, 08 February 2012 14:56
		Re: muffler and placement By: PETEinLongBeach on Wed, 08 February 2012 15:23
		Re: [GMCnet] muffler and placement By: USAussie on Wed, 08 February 2012 17:21
		Re: muffler and placement By: mike miller on Wed, 08 February 2012 20:32
		Re: muffler and placement By: sgltrac on Thu, 09 February 2012 23:55
		Re: muffler and placement By: WD0AFQ on Fri, 10 February 2012 00:16
		Re: [GMCnet] muffler and placement By: sgltrac on Fri, 10 February 2012 00:23
		Re: [GMCnet] muffler and placement By: MIGUEL MENDEZ on Fri, 10 February 2012 11:08
		Re: [GMCnet] muffler and placement By: Ken Burton on Sun, 12 February 2012 03:25
		Re: [GMCnet] muffler and placement By: mickeysss on Mon, 12 March 2012 10:52
		Re: [GMCnet] muffler and placement By: sgltrac on Tue, 13 March 2012 08:51
		Re: [GMCnet] muffler and placement By: Larry on Tue, 13 March 2012 10:18

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