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

boost question

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  #11  
Old 04-12-2009, 10:50 AM
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yea it should but i dunno im eventually going to get another turbo or actually change the housing to a bigger one.
 
  #12  
Old 04-12-2009, 01:41 PM
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he may not have plug the signal line for the wastgate i would check that my truck will never go back to zero when i let off it will go down to 4psi or so but no less. my buddys auto is the same way. so i would say to have a boost leak somewhere
 
  #13  
Old 04-12-2009, 01:47 PM
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hmm well that sucks. my turbos getting worn out so i need to upgrade soon to a nice fat shaft. I just don't have the funs right now. I Like the bd turbo rated for 500hp.
 
  #14  
Old 04-12-2009, 05:34 PM
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Im thinking about getting a 64/14/71 with a non waste gated housing. Just weld an external waste gate on the manifold. I was told the turbo will work better that way. Also with that setup it will smoke more , even though thats not a good thing it sure is fun to do to **** people off. I have had people move out they way of my smoke cloud.
 
  #15  
Old 04-12-2009, 05:40 PM
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Nothing wrong with not having a gate just dont get above 40psi... much

Mine goes to Zero when I let off if the lock up switch is off. If theres no load on the engine then there shouldnt be boost in an auto. In a stick or witha lock up your still pinning the engine and making a few punds 3 or 4 but in mine like I said it will go to zero. doesnt matter if im doing 25 or 115 it will drop to zero.

---AutoMerged DoublePost---

Originally Posted by collinscummins
Im thinking about getting a 64/14/71 with a non waste gated housing. Just weld an external waste gate on the manifold. I was told the turbo will work better that way. Also with that setup it will smoke more , even though thats not a good thing it sure is fun to do to **** people off. I have had people move out they way of my smoke cloud.
Whats your hp goal? If I had to do it again I would have a 66/71 or 66/74 on my truck .
 

Last edited by xzaq103; 04-12-2009 at 05:40 PM. Reason: Automerged Doublepost
  #16  
Old 04-12-2009, 08:35 PM
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Originally Posted by collinscummins
Im thinking about getting a 64/14/71 with a non waste gated housing. Just weld an external waste gate on the manifold. I was told the turbo will work better that way. Also with that setup it will smoke more , even though thats not a good thing it sure is fun to do to **** people off. I have had people move out they way of my smoke cloud.
Or you can get one of thoes blow off valves you weld into your inter cooler. then just set it for 35psi you will be good to go.
 
  #17  
Old 04-12-2009, 10:02 PM
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My Hp goal with a single charger is 550, but i still tow a fifth wheel. With twins I want to hit 600 on diesel, maybe some spray but i was told if i want longevity out of my motor to stay away from the spray. So i might just stick to water alcohol
 
  #18  
Old 04-13-2009, 07:21 AM
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Thats a good idea for a post....
 
  #19  
Old 04-13-2009, 08:06 AM
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i have an auto,and if i let off the pedal no matter how fast i'm goin it will drop to zero,but at 55 or 60 cruisin,it will boost about 5psi.since your wastegate is plugged you had better watch your gauges fixed you get those leaks fixed,cause i'm sure that's what your problem is.
 
  #20  
Old 04-13-2009, 09:27 AM
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it seems to be ok on boost hell i had it hit over 40 psi yesterday. i had some guy riding my *** and i mashed it it blew black smoke all over his nice minivan
 


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