5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

3k spring install with no factory shims

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Old 05-27-2010, 09:14 PM
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Default 3k spring install with no factory shims

So I finally got around to installing my 3k govenor spring kit after much reading and making sure that I was ready for the task. I decided to go in from the side instead of the top. It took me 2 hours, yea I know im slow but just wanted to take some extra time to make sure I did the job rite. Well after worrying about droppin the shims in the pump I was amazed that there where no factory shims. At first I was worried but I remember reading a thread about the shims which stated that some pumps didnt have shims. Is this true? So I was releaved. I was happy with the install and now im more confident about doing it again. I just have one question. Could someone explain to me what happens when u set the springs tight verses setting the springs loose. I am just wandering how this affects performance.
 
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Old 05-27-2010, 09:23 PM
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some pumps had shims and some did not.

As for the tight and loose thing, too tight will cause a very high idle and a super touchy throttle. too loose will not allow the pump to fuel as hard as it should and idle will be very low.

how many clicks did you take your springs? 180hp ppump?
 
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Old 05-27-2010, 09:33 PM
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I didnt really pay attention to the clicks that much. I payed more attention to setting it like the factory had it. I set them to around .045 or so. I did notice that the idle did go up a lil. It raised the idle about 150-200 rpm... So I guess tomorrow ill have to set the idle down a lil..
 
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Old 05-27-2010, 09:55 PM
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yep its a simple adjustment screw in the back of the pump.
 
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Old 05-27-2010, 10:00 PM
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I have been noticing that the truck has been seeming a lil sluggish, its been getting worse. When I installed the springs I could defiantly tell a diff but the truck just dont feel rite. I think that it is the tranny. The truck has 165,000 miles on it with no rebuild on the tranny. I have had to put 2 converters (stock ones) in the past year. I think its loosing internal pressure and not letting the converter lock up and hold like it should.. I also think the clutches are slipping. It is very sluggish from a start. Whats your opinion?
 
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Old 05-27-2010, 10:08 PM
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I'm not gonna lie to you I'm not an auto trans wiz, but IMO it sounds like you need a trans rebuild
 
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Old 05-27-2010, 10:10 PM
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Im hoping to get it done next week. There is a diesel shop in Salisbury NC named Power by Poole and im planning on taking it to him to get him to rebuild it
 
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