12 Valve 2nd Gen Dodge Cummins 94-98 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps

What IS a safe EGT

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Old Dec 12, 2009 | 12:01 AM
  #21  
STUMPMAN's Avatar
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1300 and under when your hammerin' it. 600-700 driving like a human. I've hit 1500+ a plenty of times, but 1500 and 48lbs boost crossed a water and oil jacket, and that is the worst way to blow a gasket, I bought stock in cascade Tonight I bolted on an s300 62mm dropped my egts alot, very manageable, made 40lbs boost pedal to the metal. Not real impressed w/ the turbo, I installed different holders in the pump,to put a little fuel back to it to make up for the bigger turbo, and that sob came to life, and I mean ran! BUT egts are not realistic for street truck, 1500 within 5 seconds of wot, but a blast to drive,and ok running unloaded, little high. I'll change them out before I hook my trailer and go to work.
 
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Old Dec 12, 2009 | 12:50 AM
  #22  
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I still don't fully understand why I can peg my gauge in seconds with stock injectors and a mostly stock pump, it blows my mind.
 
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Old Dec 12, 2009 | 08:20 AM
  #23  
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Originally Posted by 12valvetater
I still don't fully understand why I can peg my gauge in seconds with stock injectors and a mostly stock pump, it blows my mind.
Whats your timing set at? Are you running stock exhaust manifold? there are flanges inside the tubes of the stock manifold that hold the heat, and restrict flow. You need to move more air.
 
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Old Dec 12, 2009 | 10:57 AM
  #24  
94 12valve's Avatar
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Originally Posted by 94 12valve
1100* pre turbo is hot I would not run it there very long

I ment post turbo

---AutoMerged DoublePost---

Originally Posted by 12valvetater
I still don't fully understand why I can peg my gauge in seconds with stock injectors and a mostly stock pump, it blows my mind.
215 injectors and a tweeked 215 pump is a good amount of fuel
 

Last edited by 94 12valve; Dec 12, 2009 at 10:57 AM. Reason: Automerged Doublepost
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Old Dec 12, 2009 | 02:59 PM
  #25  
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i put a water meth kit in for my egts drops them about 250F so i can stay in it for longer but it will hit 1600 in a heartbeat with out it
 
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Old Dec 12, 2009 | 06:02 PM
  #26  
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I'll let my 06 hit 1600 when really romping on it but i don't let it stay there for more than a few seconds and running at 75 mph and 1600rpm, 38''s are nice low rpm's the pyro runs anywhere from 600-900, lots of big hills in mt, if i pull the hills at 90 which is about 2000rpm the egt's are at about 900 and hit 1100+ depending on the boost level but i think my tires and stuff make the egt's higher than a normal pickup would be
 
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Old Dec 12, 2009 | 06:04 PM
  #27  
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Just gut ur exhaust. Problem solved.
DUMP PIPES FTW
 
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Old Dec 13, 2009 | 11:38 AM
  #28  
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Originally Posted by STUMPMAN
Whats your timing set at? Are you running stock exhaust manifold? there are flanges inside the tubes of the stock manifold that hold the heat, and restrict flow. You need to move more air.
Timing is set at 19*. I have a PDI exhaust manifold. Over break I am going to try to port the manifold and exhaust housing.
 
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Old Dec 14, 2009 | 07:39 AM
  #29  
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That will help some....remember to keep the part that flow into a little bigger than the part that flows out so you don't create a dam to block flow.
 
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