Muffler on a multi-fuel...?

[JOEDEUCE]

Summit racing sells Lizard skin. There are two types.

Type #1 is ceramic insulation, its class A fire rated, reduces heat transfer by 25 -30 degrees and noise by 20-30 decibels and it withstand temps from -45 degrees to 500 degrees. Summit part # Is LIZ-50100. $159
Type #2. Is strictly a noise reduction coating and withstands temps up to 300 degrees, summit part# LIZ-50115 $149

Both types come in a 2gal bucket, the ceramic stuff applied at .040 thick will cover 45-50 sq feet. The sound control coating will cover a 100 sq feet when applied at .020 thick. Basicly ya spray it on, and it cures to a durable yet flexible state.

 

[islandguydon]

Yea,

He is from Michigan to. Thanks Katahdin, now I just added this to my list. Like I don't have enough to do already.

This is a "must do" in a Deuce. Good You tube video.

 

[A/C Cages]

Lizard skin, is that what you are doing if you ever get your truck back..? Do you have a good link for it...? Never mind, I guess I can Goggle it,daaaaaa

Yup, if I ever get it back bobbed. lol

 

[islandguydon]

A/C Cages

How long has he had it now....? a year..? Aren't you doing the inside and outside with the stuff...?

 

[A/C Cages]

A/C Cages

How long has he had it now....? a year..? Aren't you doing the inside and outside with the stuff...?

Not a year, just since July. His new job has him training to fly..lol Yup training a pilot of a lifetime to fly. lol

 

[islandguydon]

Must be more important than finishing up your truck.

Must feel like a missing child,lol

 

[Heath_h49008]

Dynamat looks a whole lot easier than that spray on sound deadener. I had heard that butyl rubber roofing... the self adhesive stuff you get a lowes... does a good job as well. Peel and stick.

Lucas for the gear noise, 1 or 2 mufflers (There's room enough to stack 2 of those Walker/Dynomax cans), and some sound deadening and insulation of the cab... I would bet you could drive without earplugs and have a conversation without pulling the headsets out of the plane. Might even be a bit warmer in the winter.

 

[simp5782]

My truck has a muffler but my neighbors down the hill below me still complain that when they are in their basement they can hear my truck rumbling the walls.

 

[shenkmen]

Here are the Attenuation Range ratings in dB(A) for the Donaldson mufflers. The greater the attenuation (more quiet) the longer and greater diameter. Data is in the attached PDF.

Donaldson Model M070028 Attenuation Range in dB(A) is 10-15
Donaldson Model M091046 Attenuation Range in dB(A) is 12-18
Donaldson Model M090146 Attenuation Range in dB(A) is 18-25

 

[Loco_Hosa]

Summit racing sells Lizard skin. There are two types.

Type #1 is ceramic insulation, its class A fire rated, reduces heat transfer by 25 -30 degrees and noise by 20-30 decibels and it withstand temps from -45 degrees to 500 degrees. Summit part # Is LIZ-50100. $159
Type #2. Is strictly a noise reduction coating and withstands temps up to 300 degrees, summit part# LIZ-50115 $149

Both types come in a 2gal bucket, the ceramic stuff applied at .040 thick will cover 45-50 sq feet. The sound control coating will cover a 100 sq feet when applied at .020 thick. Basically ya spray it on, and it cures to a durable yet flexible state.

Whats really funny? I was just asking about this stuff in another thread. I was contemplating how brilliant it would be to do the underside of the Deuce cab, the firewall, and the interior with this brilliance.

Kind of pricy, and I dont think I trust myself with a spray gun that much yet. (At $70 a gallon I want to know I wont Joe it up)

Thanks for the helpful info!

 

[5tonpuller]

Put a NAPA one on my wrecker. What difference. Can hear my self think. I think it made it better to drive.

 

[Heath_h49008]

I suppose if you really wanted to, you could put a "loop" under the truck with a big ugly muffler, and route it back out to the factory stack. Both problems solved... with a lot of welding.

 

[bones1]

Just started mine with the new muffler today and it sounds much better. Seems to be about 1/3 as loud as before or better.
Muffler install should be on your to do list.
Think I'll go out today and move my heater inside the cab, see how that does.

 

[bones1]

Was originally thinking about moving the intake duct to the firewall so you would recirculate cab air like a more modern vehicle. It would stand to reason that the air would be warmer ducted this way. But now since there is plenty of room under the glove box the whole heater assembly will fit there without much fabricating and you would run the heater hoses through the firewall.

 

[greenjeepster]

If you don't like an external muffler you can try a drop in baffle in like they do for city buses. Baffle (semi-truck & Busses Application) Manufacturer & Wholesale Supplier From Usa

 

[3dAngus]

This is a fantastic thread. What would make it complete is, if someone had a decibel meter and could measure the noise at idle, then at running speed, before and after the install for actual in the cab comparisons.

Actual instrumented testing before and after is the only true value of a muffler install, and what value you will receive from it, with measureable metrics. Location, angle of exhaust, open windows, floor or firewall noise, all come into play along with the design of the muffler itself.
Ears will tell you a lot as well, from the human perspective alone, but the information is not product specific without measureable values on an actual install so comparisons can not be made.

Here is the OSHA standard for noise protection and I'm sure it is exceeded at 85 db over an averaging period of 8 hours on a long drive, so my guess is going to be hearing protection should be used at all times, regardless of install or not, for your own protection. This is only an educated guess and must be dispelled if possible through testing before and after. There are a lot more specifics on rules and information later on down the web page if anyone is interested in more specific info. If I ever do a muffler install, which looks really tempting after reading this thread, I will find a decibel meter and make the recordings and document for all to see, but it is not in the plans for now. All I can say is the noise is deafning on a long road trip and ear muffs are an absolute necessity, conversations are impossible. Nice to know some of you can hear your wife again. I'm sure she appreciates it. Or.... you can always put the earmuffs back on.

Occupational noise exposure. - 1910.95

Thanks for a great read.

 

[3dAngus]

OOPS! Just found this thread.
http://www.steelsoldiers.com/deuce/54990-muffler-installation-db-comparison.html

I also researched a decibel meter for sale. You can find a digital handheld decibel meter at Sears or KMart for about $40. I would highly recommend it if installing a muffler, and testing your installation for yourself for comparison. The above thread would make a great reference for your own installation comparison.

 

[Tinwoodsman]

Here are two shots of the muffler grill treatment I added on my Donaldson. I removed the stock grill and re-sized it and tacked it to the muffler. Gives the appearance of a stock grill somewhat.

 

[Heavysteven]

Video

[media]http://www.youtube.com/watch?v=EBCbRrmTKmU[/media]

 

[Heath_h49008]

Video

]http://www.youtube.com/watch?v=EBCbRrmTKmU[/media]

Nice truck! The walkaround really shows how quiet your exhaust is compared to normal engine machine noise.

Thanks!