Diesel's (Why so loud)? - Dodge Cummins Diesel Forum
- HOME - FORUMS - GARAGE - TECH - ARTICLES - CHAT - CLASSIFIEDS - REVIEWS - VIDEOS - MEMBER MAP - STORE - INSURANCE -
- REGISTER - CALENDAR - INFO - SITE HELP - RULES - STAFF - MEMBERSHIP - ADVERTISE - CONTACT US -


Welcome to the Dodge Cummins Diesel Forum, the fastest growing Dodge Diesel Community on the internet.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features. By joining our free community you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is fast, simple and absolutely free so please, join our community today!

If you have any problems with the registration process or your account login, please contact contact us
Go Back   Dodge Cummins Diesel Forum > General Forums > General Diesel Discussion
General Diesel Discussion Discuss General Topics related to the Cummins , Dodge Rams , Other Diesels Ect....NO ADVERTISING

CumminsForum.com is the premier Dodge Diesel Truck Forum on the internet. Registered Users do not see the above ads.

Auto Insurance

» Featured Product
Wheel & Tire Center

Closed Thread
 
LinkBack Thread Tools Display Modes
Old 11-02-2010, 03:00 PM   #1 (permalink)
CF Chapter President
 
cumminspower2's Avatar
 
Join Date: Apr 2008
Location: shrewsbury, MA
Posts: 833
Thanks: 10
Thanked 15 Times in 14 Posts
iTrader Score: 0 reviews
Diesel's (Why so loud)?

Why do Diesels, especially Cummins make so much noise? Why do they rattle, and shake, vibrate, and move so much? And what is that distinct sound a Cummins makes at idle that no other diesel engine really makes? Is it the valves opening and closing (valve clatter)? Or the injectors injecting fuel? Whichever it is, it sounds awesome!!

Thought this would make for a cool topic of discussion.
__________________
04.5 2500 4x4 Built auto: Decommissioned and in the process of building....questing for a low 700

1997 4x4 5 speed Valair DD, boost, fuel psi, and EGT gauges, 5" str8 pipe, AFE intake, 191's, 4k's, fuel plate? , Jkidd hybrid turbo 35/40
cumminspower2 is offline   Quick reply to this message
Sponsored Links
Advertisement
 
Old 11-02-2010, 03:34 PM   #2 (permalink)
Wont playwell with others
 
rpage's Avatar
 
Join Date: Nov 2009
Location: where its always hot
Posts: 7,746
Thanks: 1,253
Thanked 2,438 Times in 1,685 Posts
iTrader Score: 2 reviews
In general a diesel is loud due to the fact that the fuel is exploding under compression without a ignition source like a gas motor which uses those nasty things called spark plugs. so basically what happens in the cylinders is the diesel is exploding under high compression and thats the general reason for the shaking and loud motor. I'm sure that someone could explain it in a lot more detail, i just gave a bumper sticker version.
__________________
Really don't give a rat's App**
rpage is offline   Quick reply to this message
Old 11-02-2010, 03:40 PM   #3 (permalink)
AMM pioneer
 
Drew G.'s Avatar
 
Join Date: Aug 2008
Location: Greensburg, KY
Posts: 453
Thanks: 288
Thanked 120 Times in 95 Posts
iTrader Score: 0 reviews
Maybe to warn the hybrid drivers to get the f out of the way
__________________
'03 Dodge 2500 QC CTD H.O. NV5600
Drew G. is offline   Quick reply to this message
The Following 9 Users Say Thank You to Drew G. For This Useful Post:
93dodgectd (11-08-2010), ckanderson (11-03-2010), cumminsdriver92 (11-06-2010), Cummin_Git_Sum (11-02-2010), JINKO6.7 (11-05-2010), MR.Poopie (11-02-2010), Paco98 (11-02-2010), titanfatman (11-05-2010), torquemondster (11-03-2010)
Old 11-02-2010, 07:51 PM   #4 (permalink)
Cummins Fan
 
CMNSKLR's Avatar
 
Join Date: May 2010
Location: Amelia, Ohio
Posts: 51
Thanks: 2
Thanked 7 Times in 6 Posts
iTrader Score: 0 reviews
You just can't beat the growl of a Cummins at idle. On the other hand, my F350 sits at idle and sounds like a jet, which is kinda cool, but I'd rather have the Cummins growl....... If I had the funds.......... my truck would become a fummins real quick like. I love the truck, but I hate the motor. I know.... I didn't answer your question........ Sorry. LOL!
__________________
"Flat Broke"
2004.5 2500 QCLB, 6 Speed, 2" HBS Leveling kit, ISSPRO Pyro - Boost gauges, Smarty, 4" TBE
CMNSKLR is offline   Quick reply to this message
Old 11-02-2010, 07:56 PM   #5 (permalink)
Mule Barn Proprietor
 
jmd025's Avatar
 
Join Date: Jul 2008
Location: NAFWG
Posts: 10,292
Thanks: 3,089
Thanked 4,467 Times in 2,408 Posts
iTrader Score: 8 reviews
Compression Ignition. Squeeze, squeeze, squeeze, squeeze, squeeze. Then BOOM.

When you compress air it becomes superheated, to the point that it readily ignites flammable liquids (diesel) on contact.
__________________
'02 2500.
'13 Passat TDI

Thanks to Weston Shupe
& Ronnie @ Altered Diesel Wurks
http://www.altereddieselwurks.com/
jmd025 is offline   Quick reply to this message
Old 11-02-2010, 07:58 PM   #6 (permalink)
Diesel Freak
 
rdix7991's Avatar
 
Join Date: Feb 2008
Location: Marietta, GA
Posts: 811
Thanks: 33
Thanked 57 Times in 50 Posts
iTrader Score: 0 reviews
It is the sound of pure Horsepower!
__________________
Runs good!

That's all that matters at this point!
rdix7991 is offline   Quick reply to this message
The Following User Says Thank You to rdix7991 For This Useful Post:
cumminsdriver92 (11-06-2010)
Old 11-02-2010, 08:23 PM   #7 (permalink)
Diesel Head
 
Join Date: Mar 2008
Location: Rockford, Illinois
Posts: 1,755
Thanks: 36
Thanked 35 Times in 32 Posts
iTrader Score: 0 reviews
A lot has to do with the injection systems and injectors along with the the fuel being ignited by compression. Also most diesels are almost all gear driven...crank, cam, pump, etc.....you see a lot of change to other systems such as belt or chain to do away with the sound...which i think is stupid...a diesel is suppose to be loud.
__________________
Daily Driver: 2004 Ram 2500 Quad Cab 4x4 Long Bed Automatic 5.9l CTD 23k miles and counting, 4" MBRP Turbo Back exhaust 1995 ram 2500 4x4 auto trans
abe568 is offline   Quick reply to this message
Old 11-02-2010, 08:31 PM   #8 (permalink)
Diesel Head
 
MX26's Avatar
 
Join Date: Dec 2007
Location: Winnsboro, TX
Posts: 1,286
Thanks: 129
Thanked 243 Times in 182 Posts
iTrader Score: 0 reviews
I think the clanging is the Cummins' nuts swinging down underneath the frame... Or, at least that's what mine is.
__________________
David

24 + 6.7 < 12

Quote:
Originally Posted by dad2bike View Post
I went for about 20ft after the hit and felt fluid down my chin.
MX26 is offline   Quick reply to this message
The Following 3 Users Say Thank You to MX26 For This Useful Post:
cumminsdriver92 (11-06-2010), Paco98 (11-02-2010), Smoke?Check (11-04-2010)
Old 11-03-2010, 03:26 AM   #9 (permalink)
Cummins Fanatic
 
stock cummins 24v's Avatar
 
Join Date: Jan 2009
Location: columbus oh
Posts: 104
Thanks: 2
Thanked 0 Times in 0 Posts
iTrader Score: 0 reviews
i had always wondered this too i thought it was the compression but i never was for sure and then you add the exhaust on like most of guys have and they get even LOUDER! lol
__________________
2002dodge ram 2500 cummins 24valve turbo 6 speed A.R.E. step bars new upgrade!4in. straight pipe STOCKER BUT IT STILLA ROCKER!
2005 jeep grand cherokee "i have a addiction and that is chocolate milk" -ME
stock cummins 24v is offline   Quick reply to this message
Old 11-03-2010, 03:30 AM   #10 (permalink)
Diesel Head
 
Join Date: Feb 2007
Posts: 12,720
Thanks: 95
Thanked 2,029 Times in 1,411 Posts
iTrader Score: 16 reviews
Quote:
Originally Posted by rdix7991 View Post
It is the sound of pure awesomeness!
agreed
__________________
been there, done that
drunk on diesel is offline   Quick reply to this message
Old 11-03-2010, 04:08 AM   #11 (permalink)
Diesel Head
 
pepsi71ocean's Avatar
 
Join Date: Sep 2009
Location: The Glorious Peoples Republic of New Jersey
Posts: 4,644
Thanks: 746
Thanked 502 Times in 420 Posts
iTrader Score: 0 reviews
what you usualy hear is the sound of the explosion.

But how do they make the newer trucks quieter, simple inject the diesel in sets, ie

89-2002 diesels used 1 injection pulse per power stroke, once you move to the common rail era the pumpers move up to 3 injection pulses. then you get to the 6.7's where i believe there are 5 injection pluses , 2 before 1 at tdc and 2 after (for emissions), the more pluses the more controlled the explosion, thus the quieter in operation..



i think its the sound of my engine eating its self lol.
__________________
99 3500 Built DTT Auto, 600 lower TC, 3.55, 4x4, BHAF, 6" lift, ARP's, Danin Optix, Gauges, DAP 100hp sticks, FASS 95, 2LO kit, HIGH Idle, Silencer ring delete, 4" exhaust, SMARTY, 03 VW PASSAT 1.8T Big Thanks to (FTE Diesel),(DAP),(DTT) They ROCK!
pepsi71ocean is offline   Quick reply to this message
Old 11-03-2010, 06:29 AM   #12 (permalink)
CF Chapter President
 
cumminspower2's Avatar
 
Join Date: Apr 2008
Location: shrewsbury, MA
Posts: 833
Thanks: 10
Thanked 15 Times in 14 Posts
iTrader Score: 0 reviews
All good responses, but what about that Cummins clatter at idle?!?!
__________________
04.5 2500 4x4 Built auto: Decommissioned and in the process of building....questing for a low 700

1997 4x4 5 speed Valair DD, boost, fuel psi, and EGT gauges, 5" str8 pipe, AFE intake, 191's, 4k's, fuel plate? , Jkidd hybrid turbo 35/40
cumminspower2 is offline   Quick reply to this message
Sponsored Links
Advertisement
 
Closed Thread

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Dodge Cummins Diesel Forum forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
If you do not want to register, fill this field only and the name will be used as user name for your post.
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools
Display Modes

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 05:04 AM.



Powered by vBulletin® Copyright ©2000 - 2014, vBulletin Solutions, Inc.

SEO by vBSEO 3.3.2