John's resonator upgrade

Topic: John's resonator upgrade (Read 2174 times) previous topic - next topic

John's resonator upgrade

September 23, 2011, 06:44:25 pm

Quote from: John Haygarth – September 23, 2011, 05:28:18 pm

Well we have just arrived back after our 2 day stint climbing mtns around here to test out my fix on the CAC I told you all about recently, and also to see what the removal of muffler does.
I now can say with some authority that this has been the biggest/ best mod' I have done on our 2000 295. We climbed many 5500ft hills and very long grades without one peep from the engine. It just sailed up easily and sounds great. I had one Semi driver that was waiting for a ferry behind me and he had seen me pass him so when stopped asked me what engine etc I had. He told me he has a pusher with the same Cummins but it does not go like mine.

This is a different unit now and I would suggest that others consider it too if you feel a bit more hp would be nice. I do not know what it has done to MPG as due to all the climbing it would be impossible to look at that fairly.

It sounds nice too !!!

John,
I was sure once you tried the resonator change from the muffler, you would not want to go back.
It is another one of those things that reading the books, you just do not get it, some times you need to roll up your sleeves and do it. Congrats

Re: John's resonator upgrade

Reply #1 – September 23, 2011, 07:30:56 pm

I plan on contacting my favorite exhaust guy in the next two weeks to let him decide on whether the Aero 5050XL (https://www.dieselpowerproducts.com/p-3711-aeroturbine-5050xl-resonated-replacement-muffler.aspx) is worth the money or to just go with the Walker. I really feel 'overhyped' with respect to the Aero...

Re: John's resonator upgrade

Reply #2 – September 23, 2011, 07:40:18 pm

Here is a 5" Walker... Walker Exhaust 21835 - Walker Resonators - Overview - SummitRacing.com

Re: John's resonator upgrade

Reply #3 – September 23, 2011, 08:10:43 pm

Dave,
First on the first one you mention, it sure looks puuurty, but a 5"hole thru is a 5" hole no matter how much chrome you put on it ?

The shown Walker resonator loooks very short, they are not long, but that one is real sort looking.

The purpose of the resonator is to reduce the high pitch sounds while allowing unrestricted exhaust flow (they are directional) or at least that is what happens to the units I have installed them on.
My OPINION is the short versioln resonator would not reduce the high pitch sound as much. I am sure there are book educated folks on the forum that can clear that up, Just MY OPINION from sperience.
I vote for the standard alumaized resonator. Not a shorty as there is plenty room to install.

Re: John's resonator upgrade

Reply #4 – September 23, 2011, 08:18:47 pm

I just can't see 200 bucks for the aero. I'll let the exh guy advise me - he's never steered me wrong yet!

Re: John's resonator upgrade

Reply #5 – September 24, 2011, 08:32:26 am

Dave I had my muffler replaced with the AERO 5050xl at the Family Reunion in Madison We. Drove home to Niagara Falls On (flat land) and really enjoy the Big increase in hp. MPG looked like 20% increase. We will soon be leaving for Tx (RGV) with a stop in Nac. at FOT. Will post with numbers on improvement.

Re: John's resonator upgrade

Reply #6 – September 24, 2011, 09:41:09 am

there is a guy who stays the winter at la pas campground in parker az. who is a dealer for aero. I bought my aero 5050 from him last year for $130.00. I had been running a straight pipe for a few thousand miles, but it was just too loud. the new exhaust is a great upgrade.

Re: John's resonator upgrade

Reply #7 – September 24, 2011, 09:46:46 am

check out this link? Is this the right part? looks like $127 with free shipping?

Aero Turbine 5050 5in in/out Muffler [AT5050] - $127.00 : Moe's Performance,

Re: John's resonator upgrade

Reply #8 – September 24, 2011, 11:41:40 am

That is the 'shorty' model. The 5050XL is 193.50

I'm looking at FTE Resonators. They are popular with the Cummins truck crowd...
https://store.ftediesel.com/home/viewCategories.asp?idCategory=8

Resonator / Muffler 5" Stainless Steel, perfect for performance exhaust systems with un-wanted cab noise or drone.

This unique spiral design virtually eliminates the unwanted sound while keeping flow characteristics for both performance and EGT reduction.

Small and Simple Design makes this unit ideal for mounting in tight areas, heavy construction ensures it lasts a long time. See what customers are saying about their experience with this amazing product at
www.cumminsforum.com, this product has proven itself to work great on all diesel powered trucks alike (Cummins, Powerstroke, and Duramax).

5" ID Inlet & Outlet
5" maximum diameter x 17.5" Over All Length - 12" Usable T409 SS Body
Eliminates irritating "Drone" & Cab Noise, maintains good sound out tailpipe or stacks
No gain in EGT or reduction in flow Premium grade product
Exhaust Parts Size: 5.0"
Material Type: SS T409
Finish: Matte
List Price: $145.95
Price: $106.75

Re: John's resonator upgrade

Reply #9 – September 24, 2011, 11:47:16 am

I put the Aeros on my 460 gasser (duals) made lots more HP, and heat. Loved the sound and performance till I blew it up. Poor motor was overworked in that rig.

Re: John's resonator upgrade

Reply #10 – September 24, 2011, 11:49:59 am

I split this out from the original discussion because it deserved its own thread.

-M

Re: John's resonator upgrade

Reply #11 – September 24, 2011, 12:50:42 pm

I also plan to replace the original monster muffler on my 96 U320.

The Aero AT5050 is a muffler at $130 on eBay, while the Aero 5050XL is a muffler/resonator combination at $200 on eBay. The Aero 5050XL is 30 inches long while the AT5050 is quite a bit shorter.

Is the intent here to replace the original muffler with a muffler and a resonator, or with just a muffler, or with just a resonator?

I would not want to have a louder exhaust, it already rattles windows (a little).

Any input would be welcomed.

Re: John's resonator upgrade

Reply #12 – September 24, 2011, 01:00:43 pm

+1 on this... Watching this thread with interest. I would like to hear other comments regarding the sound difference between stock and this mod. I am all for reducing the restriction/EGT/Weight and increasing HP/Milage etc...
Don

Quote from: P. Wyatt Sabourin – September 24, 2011, 12:50:42 pm

I also plan to replace the original monster muffler on my 96 U320.

The Aero AT5050 is a muffler at $130 on eBay, while the Aero 5050XL is a muffler/resonator combination at $200 on eBay. The Aero 5050XL is 30 inches long while the AT5050 is quite a bit shorter.

Is the intent here to replace the original muffler with a muffler and a resonator, or with just a muffler, or with just a resonator?

I would not want to have a louder exhaust, it already rattles windows (a little).

Any input would be welcomed.

Re: John's resonator upgrade

Reply #13 – September 24, 2011, 01:04:47 pm

Quote from: acousticart – September 24, 2011, 01:00:43 pm

+1 on this... Watching this thread with interest.

Quote from: P. Wyatt Sabourin – September 24, 2011, 12:50:42 pm
Is the intent here to replace the original muffler with a muffler and a resonator, or with just a muffler, or with just a resonator?

+2 (1 for me, and 1 for Steve) - I imagine if it didn't harm fuel economy yet added a little pep at a very reasonable cost, what's not to love?

Michelle

Re: John's resonator upgrade

Reply #14 – September 24, 2011, 01:18:41 pm

Here have been several discussions on RV.net about the Aero mufflers. Most find the noise level high.

Consensus is that MagnaFlow is quieter and gives virtually the same performance: http://www.magnaflow.com/02product/displayapplications.asp?partnumber=12774

Re: John's resonator upgrade

Reply #15 – September 24, 2011, 01:27:19 pm

wyatt
the guy who sold me mine told me that the main difference between the two, was that the more expensive one would quiet things down a bit more.

I opted for a little more growl.

Re: John's resonator upgrade

Reply #16 – September 24, 2011, 02:36:50 pm

One of the chuckles I get out of this subject, for the most part, the increase in MPG seems to be slightly over looked, while I have no hard concrete figures at this point, I know from running a routine course between home in Va to Pittsburg, while the performance is much improved, the fuel burn is also less even while I was charging pretty hard on mtns. Actually climbing the hills on the Pa Turnpike west of Bedford toward Somerset, you can not run full throttle up the mountain toward the tunnel or you will be way crazy in the turns close to the tunnel. Anyway, in the end I burnt less fuel in the round trip.
Everyone is an expert here, so do what you feel happy with, for me the Walker Resonator is my favorite from prior experience. being cheap & tacky as I am.

FWIW as usual.

Re: John's resonator upgrade

Reply #17 – September 24, 2011, 02:47:13 pm

Dave. Part number and source if you have them please. Thanks!

Re: John's resonator upgrade

Reply #18 – September 24, 2011, 03:39:50 pm

Tim, Surely, Here is the Walker manual for lots of items of interest including the resonator, clamps, elbows etc etc and more etc.l
Anyway the Resonator part number is 21835 It should be available at any truck supplier that handles Walker exhaust parts.

This manual is listed else where on the forum, but I am unable to locate it, so here is again

http://www.walkerheavyduty.com/catalog/docs/WHD08_Accessories.pdf

Enjoy,
Dave M

Re: John's resonator upgrade

Reply #19 – September 24, 2011, 04:11:38 pm

To answer Wyatt's question-- I wanted to have a better flow of exhaust and heat away from the manifold and although I am not an engineer on the subject to me it seems most problems with engines usually has something to do with heat,so I wanted to lower it. I also figured any restrictive muffler would have a negative effect on that and power output. Hence-remove that and try and keep the noise down. The Cummins one I used has kept the sound down but HAS made it a touch louder but a NICE louder, sort of growl. Ruth did not notice any difference when I asked her, and she is an expert on noise !!! The bus has a new life as far as power and as yet I cannot give any mpg comparables out as I did not look at that point yet.
I kept all the old pieces in case this did not work out but they are going in the scrap soon.

Re: John's resonator upgrade

Reply #20 – September 24, 2011, 04:59:57 pm

John, when I questioned one of the Sr. Cummins Techs at FMCA last year about removing the muffler and installing a resonator, he told me that there was precious little back pressure from the muffler system used on my :U225 and in his opinion there would be no measurable gains in either temperature or horsepower by changing to an open exhaust system. I know that is contrary to what several other highly respected forum members have experienced but based on that conversation, I am guessing that sealing the CAC leaks may have more to do with your noticeably increased horse power. Just an opinion but one day I might see if a resonator would help my Detroit. You never know.

Re: John's resonator upgrade

Reply #21 – September 24, 2011, 05:15:24 pm

To expand on Kent's thought, there is a VAST difference in exhaust CFM between a Cummins B engine and an L or M engine.

I know the muffler on our Caterpillar 3116 (U240) is well oversized for the CFM requirements of our engine-- so little back pressure. But, if this same muffler were used on a large engine, it may be undersized.

Said another way, I doubt there is an across the board answer as to performance or MPG improvement, as back pressure is not the same on all applications.

Brett

Re: John's resonator upgrade

Reply #22 – September 24, 2011, 05:33:02 pm

Kent, you may be right to a degree, but I do know that even when there is almost no boost pressure the manifold temp' is a lot lower on the gauge I have and VMS so that has to be a big factor for me. I do actually believe removing it HAS made a difference to power out put, but can not prove it.
Less weight though to carry around!!!

Re: John's resonator upgrade

Reply #23 – September 24, 2011, 05:52:15 pm

The funny thing here is Kent has a 6V-92 Detroit, it being a 2 cycle has twice the air flow thru the engine as a 4 cycle. OK it is 552 CID, in 4 cycle world think 1104 CID for air flow thru the exhaust, Is there a light bulb getting bright some where.?
A free'r exhaust on a 2 cycle 6V-92 would be more effective than on a 4 cycle ISM, C, B, Cat, etc. using the 5 inch resonator.
Or have I stripped a gear some where?

Re: John's resonator upgrade

Reply #24 – September 24, 2011, 06:07:28 pm

Brett, what you said makes perfect sense regarding the throughput of the smaller engine.

John, that being the case fortifies your conclusion regarding improved breathing and horse power.

Now based on what Dave says, you know I'm going to have to look into making the exhaust change on my 6V92. Thanks a lot Dave. Of course the good thing is I can't do anything until I heal up. Considering the pain medication I'm on I will probably forget all of this by that time.

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