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

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Old Sep 10, 2008 | 01:10 AM
  #11  
94cummins12v's Avatar
Diesel Bomber
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From: Havre mt
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i ended up using the 4k springs in mine they dont require the valve springs but you dont want to exceed 3200RPM without them i ran stock springs with my 4k kit for about a year but as soon as i put my exhaust brake on i upgaded to 60lb valve springs
 
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Old Sep 10, 2008 | 02:53 PM
  #12  
xzaq103's Avatar
FormerVendor
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From: Fayetteville AR
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I think 4Ks pull harder that 3Ks but I only ran 3s for about a week in my 97. As for 60lb springs I was back and forth on it I decided that I wanted them in there if I ever had a runaway or if ever tried my luck at a truck pulling I was worried that I might break something and the engine would free rev. The way I figured it was valve springs are cheap engines aren’t.

As for 3Ks in autos I have heard that people say that because a stock autos should shift well before 3K however if you plan to do anything in the 100mph+ range , have a built trans that shifts later to maximize the gear or plan on doing any type of competition then 4ks are a must.
 

Last edited by xzaq103; Sep 10, 2008 at 02:57 PM.
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Old Oct 3, 2008 | 10:12 AM
  #13  
mike d's Avatar
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Joined: Oct 2008
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Default timing questions?

Originally Posted by Dr. Evil
TST Products originated the modified fuel pate - theres also more info here:

94-98 Dodge Ram TST Power Kit with Video

This is now considered to be just a guide. There lots of people grinding their own custom plates and getting them from other sources.


Bumping the timing will give you a very marginal bump in hp - but, more importantly it will make the truck run better. You should be somewhere between 15-17 degrees.

For some extra performance you should look into a 3k or 4k Governor Spring Kit.


Also, have a look at this:

https://www.dieselbombers.com/5-9l-1...-12-valve.html
i was wondering how to adjust my timing in my 95 12 valve. you said between 15 17?

---AutoMerged DoublePost---

i was wondering how to adjust the timing in my 95 12 valve? you said between 15 17?
 

Last edited by mike d; Oct 3, 2008 at 10:12 AM. Reason: Automerged Doublepost
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Old Oct 3, 2008 | 11:03 AM
  #14  
Dr. Evil's Avatar
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Joined: Mar 2007
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From: North of You
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Hi Mike - welcome

I am talking about injector pump timing and not engine timing.

You will need some special tools to do the job. Heres the basic procedure:

TSB 18-10-94 Rev. A

That being said, have to repaired your KDP (Killer Dowel Pin)??


If you start a thread under 12V drivetrain - Im sure many people will chime in.
 
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