What is done to your Cummins Turbo Diesel
Professional
Joined: Dec 2008
Posts: 151
Likes: 0
From: Tuscaloosa, Alabama
I guess what I meant to say is there a drone in the cab. Most people with the aero 4040 say it usually needs the resonator that the xl usually has. I'm looking at gutting my cat, but don't want it louder than it is now.
Professional
Joined: Dec 2008
Posts: 151
Likes: 0
From: Tuscaloosa, Alabama
I guess what I meant to say is there a drone in the cab. Most people with the aero 4040 say it usually needs the resonator that the xl usually has. I'm looking at gutting my cat, but don't want it louder than it is now.
Registered User
Joined: Aug 2009
Posts: 16
Likes: 0
From: Buford, GA
I recall when installing my Banks powerpack that I cranked the engine during the period where there was no exhaust installed. The engine was not noticably louder. The old mechanical fuel injection was still the biggest noise maker. The turbo makes a pretty good muffler all by itself.
Record Breaker
Joined: Dec 2005
Posts: 2,147
Likes: 0
From: Winter Garden, Fl
I recall when installing my Banks powerpack that I cranked the engine during the period where there was no exhaust installed. The engine was not noticably louder. The old mechanical fuel injection was still the biggest noise maker. The turbo makes a pretty good muffler all by itself.
All Star
Joined: Dec 2008
Posts: 863
Likes: 0
From: East Alabama
Your turbo is a bit of a muffling device. A little, but not much.
The biggest reason the old engines were so much louder was the cylinder pressure and timing.
The old 12V's only had 1 injection event per cycle and this made the cylinder pressures spike which causes the "diesel rattle"
The newer engine have the pilot and post injection events that prevent that spike and subsequently lower the engine noise.
A straight piped 12 valve will set off car alarms. A straight piped 6.7 is still pretty quiet, the loudest thing you hear is the turbo.
The biggest reason the old engines were so much louder was the cylinder pressure and timing.
The old 12V's only had 1 injection event per cycle and this made the cylinder pressures spike which causes the "diesel rattle"
The newer engine have the pilot and post injection events that prevent that spike and subsequently lower the engine noise.
A straight piped 12 valve will set off car alarms. A straight piped 6.7 is still pretty quiet, the loudest thing you hear is the turbo.
Registered User
Joined: Jan 2007
Posts: 25
Likes: 0
From:
Some great info
Your turbo is a bit of a muffling device. A little, but not much.
The biggest reason the old engines were so much louder was the cylinder pressure and timing.
The old 12V's only had 1 injection event per cycle and this made the cylinder pressures spike which causes the "diesel rattle"
The newer engine have the pilot and post injection events that prevent that spike and subsequently lower the engine noise.
A straight piped 12 valve will set off car alarms. A straight piped 6.7 is still pretty quiet, the loudest thing you hear is the turbo.
The biggest reason the old engines were so much louder was the cylinder pressure and timing.
The old 12V's only had 1 injection event per cycle and this made the cylinder pressures spike which causes the "diesel rattle"
The newer engine have the pilot and post injection events that prevent that spike and subsequently lower the engine noise.
A straight piped 12 valve will set off car alarms. A straight piped 6.7 is still pretty quiet, the loudest thing you hear is the turbo.
Thanks for all the great information you share with us,maybe we can get your thoughs on the so called death wobble.....
I enjoy reading your post and getting informed
Thanks again Mike
All Star
Joined: Dec 2008
Posts: 863
Likes: 0
From: East Alabama
Actually, there is a lengthy thread about it already.
The last post by God Ram It pretty much explains it, bad geometry.
https://dodgeforum.com/forum/dodge-c...ml#post1785569
Add some caster to the alignment, a steering box brace and check yout track bar bushings.
Unfortunately, the death wobble is not just a Dodge thing. It's pretty common in any solid axle truck.
Last edited by Coal Train; Aug 29, 2009 at 02:37 PM.
Registered User
Joined: Jan 2007
Posts: 25
Likes: 0
From:
Thank again
Just so as not to get to far off the original topic, start a new thread on this subject.
Actually, there is a lengthy thread about it already.
The last post by God Ram It pretty much explains it, bad geometry.
https://dodgeforum.com/forum/dodge-c...ml#post1785569
Add some caster to the alignment, a steering box brace and check yout track bar bushings.
Unfortunately, the death wobble is not just a Dodge thing. It's pretty common in any solid axle truck.
Actually, there is a lengthy thread about it already.
The last post by God Ram It pretty much explains it, bad geometry.
https://dodgeforum.com/forum/dodge-c...ml#post1785569
Add some caster to the alignment, a steering box brace and check yout track bar bushings.
Unfortunately, the death wobble is not just a Dodge thing. It's pretty common in any solid axle truck.