Engine/Transmission (1998.5 - 2002) No drone Donaldson!

[JayStraight]

I just yesterday replaced my MBRP muffler with the M085171 and so far really like it!!! I did the hanger flip where you redrill the hole and offset it to the front instead of the back and installation was a breeze.

I ordered it on Tuesday night and had the muffler sitting on the porch Thursday after work! It turns out I'm only about 150 miles away from one of Ryder Fleet Products warehouse so that helped.

By far the best $80 (with shipping) I've spent on the truck.....

 

[Steve8511]

Do you have the specs on this muffler? How long/diameter etc, where to buy? Thanks.

 

[JayStraight]

Here are the specs from the Donaldson website. (copy and pasted)



A - Inlet Diameter (Inches): 4

B - Body Diameter (Inches): 8. 5

D - Overall Length (Inches): 40

E - Outlet Diameter (Inches): 4

Rated Flow LR (CFM): 1800

Rated Flow MR (CFM): 2546

Rated Flow HR (CFM): 3119

Back Press LR (In Hg): 1

Back Press MR (In Hg): 2

Back Press HR (In Hg): 3

Attenuation (dBA): 8-12

Product Type Description: Muffler, Round, Style 1

Primary Application: OFF ROAD APPLICATIONS

Product Group: E







Packaged Dimensions

Country of Origin: US (United States)

Gross Length in Inches: 42. 75

Gross Height in Inches: 8. 75

Gross Weight in Pounds: 20. 34

Drawing Version: U

Gross Width in Inches: 8. 85

Pieces Per Pallet: 30





I bought it from Truck Parts for Semi,Trailer,Heavy Duty Trucks @ RyderFleetProducts for $79. 14 shipped to the door!!

 

[Steve8511]

Thanks Brother! I appreciate it. I'm ordering one now

 

[BOBrien]

Just wondering if this is a straight thru muffler. Can you see thru the entire length, nothing restricting? Thanks.

 

[JayStraight]

Yes, it is straight-thru!!!



Still love the new quieter sound... .

 

[JAlford]

Still love the new quieter sound... .

JayStraight - are you still happy with the sound of the exhaust? Have you noticed any change in your EGT's or turbo spool? How about towing, is it still quieter under loads?
Thanks for any info.

 

[bigceltic]

Subscribed..

 

[Vaughn MacKenzie]

This thread reminds me of a tactic used around 15 years ago to combat drone...a length of angle iron clamped onto the top of the longest straight piece of pipe. Supposedly it made a noticeable different but I never tried it myself.

 

[Branzila]

I have a 2001 3500 24v that has only 24k miles on it. (it sat for like 7 years) I have no power for about 3 seconds after pressing the pedal. I will let you know what has been done so far..

 

[JR]

This thread reminds me of a tactic used around 15 years ago to combat drone...a length of angle iron clamped onto the top of the longest straight piece of pipe. Supposedly it made a noticeable different but I never tried it myself.

It does work. I clamped about a 30" piece of rubberized unistrut to my cousins truck several years ago and it helped substantially. The noise was still obnoxiously loud for my tastes (5" turbo back no muffler no resonator) but it did cut back on the drone under load.

 

[jandtjil]

I have a 2001 3500 24v that has only 24k miles on it. (it sat for like 7 years) I have no power for about 3 seconds after pressing the pedal. I will let you know what has been done so far..

PM sent
wow an 01 w only 24K talk about a real-life grocery getter