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

GSK questions

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  #1  
Old 10-02-2010, 11:58 PM
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we had a 96 with the 5speed, idk what was all done to it but i was told it had a plate to do 300hp and 800lbs, truck reved to 3k no problem but wouldnt go over 95mph, when you red lined the truck in any gear it would dump out a solid colunm of smoke

my 95 w/auto with everything in my sig will dump out smoke off the line but nothing as i get to 3k rpms

is the difference in the trucks smoke the tranny or the way the pumps were set up is what im wondering?

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oh and the 95 w/auto wont rev past 2600 when in OD even if im doing 110+mph
 

Last edited by cumminspwr11; 10-02-2010 at 11:58 PM. Reason: Automerged Doublepost
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Old 10-03-2010, 12:14 AM
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if your not getting smoke or a haze at least then your either...

1. not getting top end fuel
2. your turbo is clearing up all your unburnt fuel (smoke)

you can get a 4 GSK for about 85 bucks
 
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Old 10-03-2010, 02:32 PM
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i have the 4k upgrades for my truck sitting the garage, i just liked oh the 96 put out the smoke when you laid on it
 
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Old 10-03-2010, 07:04 PM
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Dont forget the HD exhaust springs to spin 4k
 
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  #5  
Old 10-03-2010, 09:02 PM
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Originally Posted by Dr. Evil
Dont forget the HD exhaust springs to spin 4k
yep
 
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Old 10-04-2010, 10:25 AM
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ya thats y they are still sitting and not in the truck, i was planning on putting them all in when i have the head off
 
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Old 10-04-2010, 12:14 PM
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put in the 4k's it will make a HUGE DIFFRENCE!!!! and i wouldn't worry about the 60lb springs till you get the extra cash... i did 4k and 60lb valve springs truck wont spin 4k unless i rev it in park or neutral.. in gear driving i can only hit 2900 when i floor it,
 
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Old 10-05-2010, 06:31 PM
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Intake valves float too.
 
  #9  
Old 10-05-2010, 06:41 PM
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i wouldnt worry about floating a valve at 2900

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or is that possible? i did the springs anyway but is it possible at 2900 rpm?
 

Last edited by monster12valve; 10-05-2010 at 06:41 PM. Reason: Automerged Doublepost
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Old 10-05-2010, 08:59 PM
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you dont have to pull the head to do springs

and when ya do them do all 12

valves dont normally float till 3500
 


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