Quieting the PSD
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Senior User
Joined: Apr 2003
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Quieting the PSD
I realise that many PSD owners squirm at the idea of anyone wanting to quiet down their PSD engine........ But quite honestly I wish I could turn down the engine volume on mine just so I could listen to my favourite music on my stereo at times.......... So Im asking for ideas on how to turn down the volume, so to speak, on my 7.3 PSD without sacrificing a lot or any power for that matter................ Any ideas ???
Logistics Pro
Joined: Nov 2002
Posts: 4,788
Likes: 20
From: Mansfield, TX USA
Quieting the PSD
You need to do the in-tank and pre-pump mods.
These mods consist of eliminating/improving the factory fuel line quick connectors and fuel tank pick-up assembly to keep air from entering the fuel intake lines.
There has been numerous, lengthy discussion of these mods (there are a couple variations) in the 7.3 forum.
Make sure that you check the recent archive section (which ended July 3, 2003).
Grab a beer and start reading. It could take you several hours to get through all the threads.
These mods consist of eliminating/improving the factory fuel line quick connectors and fuel tank pick-up assembly to keep air from entering the fuel intake lines.
There has been numerous, lengthy discussion of these mods (there are a couple variations) in the 7.3 forum.
Make sure that you check the recent archive section (which ended July 3, 2003).
Grab a beer and start reading. It could take you several hours to get through all the threads.
FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Quieting the PSD
What ever mods you do to the engine, it's still going to be a diesel (I'm one of the guys that likes that sound).
The only real answer it to better isolate the cab. Apply sound deadening material (like Dynamat) to as much of the inside of the firewall as you can reach, under the carpet, behind the door panels and above the headliner. Provided you never roll down the windows you'll think you're driving a towncar.
Sheesh! the PSD weighs almost 1000 pounds as it is!!
The only real answer it to better isolate the cab. Apply sound deadening material (like Dynamat) to as much of the inside of the firewall as you can reach, under the carpet, behind the door panels and above the headliner. Provided you never roll down the windows you'll think you're driving a towncar.
If they had a hundred pounds more of cast iron in the block it would be better.
Posting Legend
Joined: Sep 2001
Posts: 30,255
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Quieting the PSD
That cast iron is what makes the big diesels quiet(er). They can get away with that in the big trucks. They just reduced the weight as much as possible to run them in light trucks... -Then you get more noise 
Good old Engineering tradeoffs!
Good old Engineering tradeoffs!
Post Fiend
Joined: Aug 2002
Posts: 5,324
Likes: 1
From: Denton,TX
Quieting the PSD
Try using Standyne lubricity formula. My engine always runs a little quieter and smoother. A lot of guys who have done the HPX mod have noted a smoother, quieter engine.
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Mountain Pass
Joined: Jul 2003
Posts: 161
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Quieting the PSD
The meaner the badder the engines sounds the better I feel..
When I first start up my PSD in the morning there is nothing better in the whole wide world... Well there are a few things better, but I won't go there.....
When I first start up my PSD in the morning there is nothing better in the whole wide world... Well there are a few things better, but I won't go there.....
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Senior User
Joined: Apr 2003
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Quieting the PSD
Originally posted by johnsdiesel
Try using Standyne lubricity formula. My engine always runs a little quieter and smoother. A lot of guys who have done the HPX mod have noted a smoother, quieter engine.
Try using Standyne lubricity formula. My engine always runs a little quieter and smoother. A lot of guys who have done the HPX mod have noted a smoother, quieter engine.
What exactly is the HPX mod ??
Posting Guru
Joined: Jun 2003
Posts: 1,406
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From: West Texas
Quieting the PSD
I have to agree with redtaurus94 on this one....you think your diesel is loud...man those dodges sound like they are completely wound up and they may only be going 10mph....kinda reminds me of the little honda and misubishi cars with the 6" in diameter chrome exhaust....too much noise for not enough power or speed!
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Senior User
Joined: Apr 2003
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Quieting the PSD
Originally posted by KING
Raise the volume on your music. It can't get any simpler than that.
You folks make it too complicated with these so called "LOUD DIESELS"..........
Raise the volume on your music. It can't get any simpler than that.
You folks make it too complicated with these so called "LOUD DIESELS"..........
Posting Guru
Joined: Apr 2003
Posts: 1,067
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From: Fairbanks Alaska
Quieting the PSD
We have the same sort of problems with airplanes. Solution. Get an aviation headset with active noise canceling and get the kind that let you plug in your cd player. About 600 bucks.
Other solution, deal with it.
Other solution, deal with it.