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

Rpms?

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Old 02-25-2009, 04:24 PM
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Default Rpms?

what is the rpm a truck will turn stock. just reving it up. i was told they will pull to about 2300rpm stock then start lossing some power.
i am think has washers in the gsk but not sure. if it does i am going to put the 3 or 4 k kit in it.
i am just trying 5to figure out if it has been done already
 
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Old 02-25-2009, 04:32 PM
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you wont be able to tell just by reving it. if you floor it under load and it falls on its face after around 2300 to 2500 then youll know
 
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Old 02-25-2009, 04:36 PM
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mine stock would rev to 3k in neutral or park with my foot to the floor. if you have an EGT gauge flat foot it in drive from about 14-1500 rmp and watch the temp. it will start falling off in temp when the truck starts de-fueling.shoule be between 21-2300 rpm or so
 
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Old 02-25-2009, 05:01 PM
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mine keeps on getting hotter maybe he guy i got it from didnt tell me about putting springs in i guess ill know this weekend when i pull the pump out.
 
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Old 02-25-2009, 05:18 PM
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Mine starts to lose power about 2700 or so if i am just sitting reving it will rev to about 3600 thats what has me wondering. i am thinking it has been washered but not positive.
 
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Old 02-25-2009, 05:37 PM
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its hard to tell whats been done to your truck until you get in there and see/more like fix whatever theyve done
 
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Old 02-25-2009, 09:10 PM
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be careful going above 3100 rpms, could possibly float the valves!
 
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Old 02-25-2009, 09:52 PM
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Originally Posted by 12valvetater
its hard to tell whats been done to your truck until you get in there and see/more like fix whatever theyve done
yea i know the Guy that did the majority of the work on my truck really well. he said he dose not remember everything that he did to it.
 
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Old 02-25-2009, 10:35 PM
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if u dont have the springs u can rev it in neutral and it will stop at 3k and stay there
 
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Old 02-25-2009, 10:36 PM
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Originally Posted by oglejust
if u dont have the springs u can rev it in neutral and it will stop at 3k and stay there
mine will rev to about 3600
 


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