quiet cummins?
11-06-2006, 08:48 PM
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quiet cummins?
What makes the new cummins so much more quiet than my 99'. I thought someone told me bigger injectors will quiet my cummins just a little.
11-06-2006, 09:10 PM
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the 3rd gens have a different type of fuel injection system, that fuel is injected before and after firing,to quiet it down, i think. someone will chime in and correct me.
dieselfan
11-06-2006, 10:13 PM
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add 1qt of 2 stroke motor/outboard oil to the fuel tank, that will quiet it down a little. injectors just usually smooth it out.
the 3rd gens have a different type of fuel injection system, that fuel is injected before and after firing,to quiet it down, i think. someone will chime in and correct me.
dieselfan
the 3rd gens have a different type of fuel injection system, that fuel is injected before and after firing,to quiet it down, i think. someone will chime in and correct me.
dieselfan
11-06-2006, 10:36 PM
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add 1qt of 2 stroke motor/outboard oil to the fuel tank, that will quiet it down a little. injectors just usually smooth it out.
the 3rd gens have a different type of fuel injection system, that fuel is injected before and after firing,to quiet it down, i think. someone will chime in and correct me.
dieselfan
the 3rd gens have a different type of fuel injection system, that fuel is injected before and after firing,to quiet it down, i think. someone will chime in and correct me.
dieselfan
3rd gens use a pilot injection (small pre-event) of fuel to quiet down the main injection event. Not sure about the after event...
But 2 cycle oil added to the fuel really quiets down a 2nd gen nicely... I'm mixing 1 quart for every 20-25 gallons of fuel. It make the fuel oil ratio about 100:1 to 120:1 Pretty minor amount... I gain roughly 1-2 MPG with the oil.
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11-07-2006, 09:56 AM
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11-07-2006, 10:08 AM
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So far I've been doing this for about 10K miles. No problems so far. I'm using NON-SYNTHETIC 2 CYCLE OIL ONLY! There is a problem with trying to burn synthetic oils (leave resdue, depostis etc.)
What it quiets is the diesel knock a bit and it lubes all fuel components... LP, VP44, Injectors, etc.
I'm mixing 1 quart to a fill up of 20-25 gallons of fuel! That makes it about 80:1 to 120:1 which is fairly thin yet. I'm using the same mixture rating as mixing waste engine oil as suggested by Cummins... But at least this oil doesn't have metal, dirt, etc... It clean oil that is ment to burn at about 300-400*F which I'm sure you Cummins will exceed easy.
Check out my page on it...
http://www.frontiernet.net/~mopar197..._cycle_oil.htm
I'm not to much of a fan of PS (Power Service) now since there is a few articles about it containing alcohol solvents. This is to help with gelling... Not good on the VP44 with the ULSD coming out...
You get the same results with Marvel Mystery Oil (MMO) if you add a full quart to a 20 gallon fillup. Once again a clean oil...
As for test rigs... I've tested this on...
DODGE CUMMINS, FORD POWERSTROKE'S, and CHEVY 6.5L DIESEL
All vehicles responded the same way... Reduced diesel knock and slight improvement in performance. (CHEVY really improved!)
What it quiets is the diesel knock a bit and it lubes all fuel components... LP, VP44, Injectors, etc.
I'm mixing 1 quart to a fill up of 20-25 gallons of fuel! That makes it about 80:1 to 120:1 which is fairly thin yet. I'm using the same mixture rating as mixing waste engine oil as suggested by Cummins... But at least this oil doesn't have metal, dirt, etc... It clean oil that is ment to burn at about 300-400*F which I'm sure you Cummins will exceed easy.
Check out my page on it...
http://www.frontiernet.net/~mopar197..._cycle_oil.htm
I'm not to much of a fan of PS (Power Service) now since there is a few articles about it containing alcohol solvents. This is to help with gelling... Not good on the VP44 with the ULSD coming out...
You get the same results with Marvel Mystery Oil (MMO) if you add a full quart to a 20 gallon fillup. Once again a clean oil...
As for test rigs... I've tested this on...
DODGE CUMMINS, FORD POWERSTROKE'S, and CHEVY 6.5L DIESEL
All vehicles responded the same way... Reduced diesel knock and slight improvement in performance. (CHEVY really improved!)
11-07-2006, 10:24 AM
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So what about when I go to Breckenridge and the temp drops? Will the 2 cycle help prevent gelling? What about the ULSD, will this have something in it to help w/ gelling?
Thanks for the info!
Thanks for the info!
11-07-2006, 11:14 AM
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As for with 2 cycle oil added its going to be a trial run for me... I'll keep you guys posted and let you know...
11-07-2006, 11:31 AM
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The main reason it's quieter is the lack of an injection pump like on your "99". Adding two stroke oil will quieten it down some. As posted earlier, do not run synthetic two stroke oil.
