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1st Generation Dodge Cummins 89-93 Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with Rotary Injection Pumps

pump spring 3200 or 4000 rpm

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  #11  
Old 10-25-2009, 06:17 PM
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Originally Posted by c12h26
my truck makes good power at 4000+ rpm
Dyno > Words
 
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  #12  
Old 10-25-2009, 06:24 PM
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Originally Posted by The_Head
Dyno > Words
i like
 
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  #13  
Old 10-25-2009, 08:28 PM
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Originally Posted by c12h26
my truck makes good power at 4000+ rpm
Nothing like what it did at 3000-3200 though, I still make good power, but its down quite a bit. I bet its still good power, but its no where near your max anymore.

You got a dyno sheet?
 
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  #14  
Old 10-26-2009, 08:35 PM
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Im sure your power doesnt drop a whole lot maybe 25 35 hp at 4000 rpm but the torque dives real fast after 2200 rpm.
 
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  #15  
Old 10-26-2009, 10:28 PM
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so i'm asuming you guys have tachs, where did u get them because i was in need of one.
 
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  #16  
Old 10-27-2009, 01:22 AM
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tiny tack = bitchin
 
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  #17  
Old 10-27-2009, 04:16 PM
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Originally Posted by 92 D/UNIT
Im sure your power doesnt drop a whole lot maybe 25 35 hp at 4000 rpm but the torque dives real fast after 2200 rpm.
try around 100hp...

Name: DynoCorrected-1.jpg Views: 532 Size: 102.4 KB
 
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  #18  
Old 10-27-2009, 04:16 PM
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Originally Posted by DieselPerformanceGuy
so i'm asuming you guys have tachs, where did u get them because i was in need of one.
I got mine from a vendor on here, its an isspro.
 
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  #19  
Old 10-27-2009, 07:00 PM
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Originally Posted by DieselPerformanceGuy
so i'm asuming you guys have tachs, where did u get them because i was in need of one.
me too
 
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  #20  
Old 10-27-2009, 07:13 PM
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looks like around 100 on the one run. more like 35-50 hp loss on the others.
 
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