Detroit 4-53T (Needs A Third Muffler)

I'd ignore those neighbors. It sounds like they're the type of neighbors that would be ringing the local authorities on a full moon night complaining they can't sleep because it's too bright.

30 minutes of pure Detroit music 🎶 love it..and NO your truck does not need a third muffler its sounds perfect👍🏻🍻

Pro tip... Just run it straight piped for a couple weeks. Then put the exhaust back on.

Thank you for the nice road trip.I would look like a nice day for a road

The problem isn't your exhaust system, the problem is that your neighbors are too close. I wouldn't live in such close quarters with other people. If you do you have to put up with their crap. Enjoyed this long drive as it shows how well the shift points have been set up.

research papers rarely have practical application --but here is info from one which may be of benefit --For the optimal design of a muffler, the following frequencies should be avoided 15Hz, 30Hz, 45Hz, 60Hz, 75Hz, 90Hz, 105Hz, etc. in order to avoid the resonance. From all the frequencies, the most important frequency is 90 Hz EFR. The wavelength at 90 Hz is 20 feet, so the length of the tail pipe must be exactly 5 feet to avoid resonance

Awesome video, i just so happened to have made this comment at 4 53am

Some Neighbours have absolutely have no taste when it comes to Detroit music. ;)

I love how your driveway looks like that with the oil spots. These older diesels like to *mark their territory*! I can relate, I have a '00 7.3 with a lil drip where I park. I had another e'99 7.3 with a lot more than a drip coming from it - it had a leaky, rusty oil pan, and the passenger rear oil rail plug on the back of head was leaking also(the o-ring gets cooked cause the downpipe goes down right next to that plug). So I'd just add oil rather than doing the right thing and fixing the actual problem! I just kept a half sheet of old OSB under it to catch my mess.🤔🤦🏻‍♂️😅🛢️🛠️🔧🔩🛢️👍🏻👌🏻

Now that would be an achievement if you could devise/invent a silencer for these venerable General Motors Diesel engine two-strokes. The Company I worked with back in the '70's were selling/service dealers for General Motors Terex heavy equipment. Along with this and from our Parts Departments, we were selling a muffler system called 'Cowl Mufflers', which seemed to reduce the sound of these engines quite a lot. I wonder if these are still available?

It sounds like AT stroke Detroit.Diesel should sound with a turbo on it sounds great

👍

It is not the exhaust that is noisy.The diesel engine running is the noise problem.All diesel engines are noisy.

Are you able to get the valve cover off without lifting the cab? In the shots you've shown of the engine bay it looks pretty snug at thr cowl.

Is latter beller straight piper

HP-you may have come across this presentation-- authored by PE a few miles north of me--Engine Exhaust Noise Control--JGL Acoustics, Inc--eye opening

If the exhaust system is already quiet as it can be, the intact tract could be another opportunity for noise reduction. It sounds great to me as is, but it is nice to be able to take that sound and just lower it down a few notches.

2 strock

Angry? They are blessed to be able to hear this baby in person. I say delete the other 2 and let her sing! =) All joking aside, I think she sounds great. Not sure why they are angry, its not like your drifting through the neighborhood at all hours bouncing off the rev limiter or anything. =)

Evil thought : drive a Commer Knocker home some evening 😈. Seriously though, how much of that is exhaust and how much is cam gear train + blower noise? you can't do much about the gear train I expect, or the blower. The exhaust you could always put on a much quieter muffler with a bypass valve for when you are out of the neighborhood, and "quiet mode" for calming the neighbors as needed.