Community Forums

1ciderdog · 03-12-2016, 04:33 PM

Quote:

Originally Posted by Michael B.

My thanks to all for the good input. The discussions on noise are certainly pertinent to replacing the muffler. My good ol' hometown diesel pro's advice was to just straight pipe it and reap the benefits Fire Up stated. But the ol' "Clatterpillar" is rowdy enough already! Thanks, again, everyone.

When I installed the 50/50 muffler one of the things I noticed was it is straight through with small openings along the inside tube. I guess those small openings are supposed to gather some of the exhaust and make it quieter. Wouldn't be much different than a straight pipe. If I were doing it again I'd probably go for the straight through pipe and then if to loud add a muffler.

timdriver · 03-13-2016, 06:11 PM

The Aero 5050xl does open up the breathing of the engine. If it breaths it'll run.

FIRE UP · 03-13-2016, 09:05 PM

Quote:

Originally Posted by timdriver

The Aero 5050xl does open up the breathing of the engine. If it breaths it'll run.

Well let's see, hmmmm, "Opens up the breathing". Well, before I purchased and installed that so called "muffler", I was getting 7.1 on flat ground, pulling various toads. It accelerated at whatever pace it could, given the amount weight not only the coach and all its contents weighed but, also the toad, and all its contents too. The coach would climb certain grades at certain speeds in certain time frames.

After the install of that "muffler", the coach is still getting 7.1 mpg, accelerates at the same rate, with the same loads, climbs the same grades, using the same gears, and reaches the tops of those grades, at pretty much the same speed in the same amount of time.

Since there was absolutely ZERO improvement, in any form, at any level, at any speed, I'd say that to me, it was total waste of money. As stated several times, all we got out of it, WAS MORE NOISE. So, personally, it did no "opening up" of anything on ours.
Scott

Kuzzy · 03-13-2016, 09:44 PM

That's totally unfair. With a proper test you might have done 0 to 60 mph 0.01 or 0.02 seconds faster.
Jeez

Dave

Kuzzy · 03-13-2016, 09:57 PM

😉

Dave

FIRE UP · 03-14-2016, 11:11 PM

Quote:

Originally Posted by Kuzzy

That's totally unfair. With a proper test you might have done 0 to 60 mph 0.01 or 0.02 seconds faster.
Jeez

Dave

I think it's more like .000001 or .000002 improvement! It all depends on how thick the air was that day.
Scott

timdriver · 03-15-2016, 05:24 PM

It helped my coach considerably. And once I got rid of that 150 pound monstrosity that came stock I know it helped. Plus with the MP8 it was a plus all the way around. And also a free flowing air cleaner was added.
It's gotta breath to run!!

NHRA225 · 03-15-2016, 06:06 PM

Threw my Stock Muffler away 16 years ago - Straight pipe all the way out --- Can't tell tell difference at idle or off idle and sitting up front I don't hear a thing unless I go through a tunnel.
EGT's dropped 75 deg.

B Dubya · 03-15-2016, 06:16 PM

Dual was great. Weaver's best. See,,,,I'm contributing to this thread!!!

Michael B. · 03-16-2016, 07:50 AM

Quote:

Originally Posted by NHRA225

Threw my Stock Muffler away 16 years ago - Straight pipe all the way out --- Can't tell tell difference at idle or off idle and sitting up front I don't hear a thing unless I go through a tunnel.
EGT's dropped 75 deg.

Well, I may rethink my idea of not straight piping after pondering on yours and other input on that solution. It probably wouldn't be any noisier than it is right now.

Michael B. · 03-16-2016, 07:56 AM

Quote:

Originally Posted by Kuzzy

I just gave my local Freightliner shop my Freightliner s/n and they came up with the right muffler. 4" side 5" out the back. Was pretty cheap too. That was two years ago and I don't think I kept the numbers.

Dave

Dave, was it significantly quieter with the new OEM muffler? How would you describe the sound?

Kuzzy · 03-16-2016, 07:49 PM

Cats seem to be a little more percussive and deeper sounding than other engines (IMO) so I still hear a throaty sound when driving beside buildings.
Mine exhausts out the driver side and from where I sit I can't tell any difference compared to the old muffler.

Dave

Chuck 1935 · 03-16-2016, 09:12 PM

Mine shakes the buildings but then again so does my 33 Ford. I just get older but I never seem to grow up !

Michael B. · 03-17-2016, 08:27 AM

Quote:

Originally Posted by Kuzzy

Cats seem to be a little more percussive and deeper sounding than other engines (IMO) so I still hear a throaty sound when driving beside buildings.
Mine exhausts out the driver side and from where I sit I can't tell any difference compared to the old muffler.

Dave

I agree with you on the nature of CAT engines. Actually, my kitty was always pretty throaty even before the muffler rusted out. That shouldn't be too surprising considering the muffler is just 8" D. x 35" L. Not much baffling in there, I'm thinking. Now it's buzzy/throaty because of the holes.