1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

water/ meth injection

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  #21  
Old 07-15-2011 | 11:18 AM
t-bone117yamaha's Avatar
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From: tricities
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well that would work exept im to cheap to go buy a capacitor for my sterio so my voltage meter is always fluxuating when the sterio is cranked(all the time)
 
  #22  
Old 07-15-2011 | 11:43 AM
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Begle, are you still making chocolate milkshakes in your crankcase?
 
  #23  
Old 07-15-2011 | 11:52 AM
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The more water I inject, the more milkshake I make. Still does it, happens on low pressure or high pressure, high load or low load. It all goes away after a couple hundred miles without water.


It may be exceptional atomization on top of worn engine, or just a worn engine. Blowby isn't visible except after an exceptionally hard run. Never tried using standard water injection nozzles. Then again, I'm also still fighting low coolant temperatures. Even with a new Cummins thermostat, open freeway driving with below 80 degree ambient temperatures never cause ECT's above 170 measured from the freeze plug on top of the thermostat housing. I don't know what my oil temps are, but it's feasible that they are typically below boiling, so I can't boil water out as well as other people that run at 180 coolant temperatures.

I have no doubt that any water injection system does put more water into the oil than you would have otherwise. But water is a major emission out of any engine, and water gets into the oil on any engine; usually oil gets hot enough to boil it off as it comes in. I still don't like the idea of water injected at low loads over long times though; even if you can't see it, you're watering down your oil. If you have oil analyses saying that it keeps looking good and your pH and viscosity aren't moving around, then I'm grudgingly okay with it. Sure doesn't work for me though.
 
  #24  
Old 07-15-2011 | 12:08 PM
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thats crazy that your oil looks like really light mud! what water meth kit are you using? cus i dont want to do that with mine thanks for the heads up with that cus i want the stage three mpg max kit whitch injects at low boost levels also and if thats gunna happen ill find annother kit -tanner
 
  #25  
Old 07-15-2011 | 03:50 PM
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Originally Posted by Begle1
It may be exceptional atomization on top of worn engine, or
Or it might just be too much water - too many / too big nozzles.

More is not always better.

You also mentioned something about "light load?" If you are injecting water below around 15psi that would also translate to too much too soon.
 
  #26  
Old 07-15-2011 | 08:38 PM
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Below 15 PSI is what the "MPG Max" kits are designed to do. No matter how much I inject at low boost levels, I get milkshake. Those particular pictures were after about, oh, 6 minutes of injection above 15 PSI and 1100 degrees EGT; the prolonged low boost injection milkshake had extra whipped cream on top.

My system is totally custom.
 
  #27  
Old 07-23-2011 | 09:35 PM
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Originally Posted by Begle1
Below 15 PSI is what the "MPG Max" kits are designed to do. No matter how much I inject at low boost levels, I get milkshake. Those particular pictures were after about, oh, 6 minutes of injection above 15 PSI and 1100 degrees EGT; the prolonged low boost injection milkshake had extra whipped cream on top.

My system is totally custom.
Sounds like your system is totally wrong I start injecting at 5psi somtimes with no such results like your having you may want to rethink your custom system Is this straight water or mixed
 
  #28  
Old 07-24-2011 | 11:56 AM
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I have doubts about the efficacy of injecting water at low load for MPG purposes.
 
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