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

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  #11  
Old 10-21-2009, 10:53 AM
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Originally Posted by big bad diesel 416
had pump shop look at pump and turn it up to 135cc (stock is 60cc)
eh? is this piston size or volume? I always see pumps rated at mm3 (cubic mm)
ve44 = 120mm3 = .06CC
p7100 = 250mm3 = .25CC

i'm confused....
 

Last edited by Budgreen; 10-21-2009 at 01:15 PM.
  #12  
Old 10-21-2009, 06:02 PM
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Originally Posted by Budgreen
eh? is this piston size or volume? I always see pumps rated at mm3 (cubic mm)
ve44 = 120mm3 = .06CC
p7100 = 250mm3 = .25CC

i'm confused....
i dont know thats what she said it would be capable of flowing

---AutoMerged DoublePost---

Originally Posted by tower_ofpower
is this the head that your machine shop put those "high performance valves" in it? if they grind the valves they have to grind the seats to match. if they didnt do this then it'd sound like a pop... although a leak down test should let you know right away. another thing is a sticking valve? lash way out of adjustment can cause the same sound... rebuilt an old john deer once; there was like a lash cap onto pf the valve. it wound up shattering and causing a "popping" noise on the intake side. i know the cummins doesnt use this but i'm just trying to relate lash problems. although the rod hung up on one of the lifters sounds pretty plausible too bud; a bend rod more likely. take em' out and roll them across a flat surface usually if one bends it's enough to notice
not a bent rod i rolled them last night i honestly think that i had one out of a ta-pit slightly what else could it be? iam puting it back together tomorrow so we will see and yes they ground the seats
 

Last edited by big bad diesel 416; 10-21-2009 at 06:02 PM. Reason: Automerged Doublepost
  #13  
Old 10-25-2009, 06:14 PM
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ok got it all back together drove it its a F-ing sled....grrr

any hoot trany is coming back out it pops out of 5th
rear and front main leak (now i have installed hundreds of seals and not had a prob) what the deal is with these i dont know and the pan leaks bad too i used cooper cote and a fel pro gasket still leaks wtf?

the guy at the shop said i would loose 50+ HP with these stock 7MM injectors and ys its true any idea on cheep upgrades?
 
  #14  
Old 10-27-2009, 01:23 AM
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bump
 
  #15  
Old 11-01-2009, 08:45 PM
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hey dude looks like that thing is being a real pain in the rump....hope you get her goen right again, i think non i/c injectors are a little bigger then i/c injectors could try a set of them or go for a set of DDPs or PODs just ta thought
 
  #16  
Old 11-06-2009, 11:18 PM
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hey thanks i got the swine flu flowed bu pneumonia so i have not left bed in the last 9 days but were gettin back to it
 
  #17  
Old 11-07-2009, 01:54 AM
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holy crap bud... glad you're gettin better. i wouldnt wish that on anyone; unless i really hated them everyones been gettin sick around me and i keep chuggin along somehow... i probably have a spin off of the H1N1 but i'm able to keep it at bay atleast. anyways best of luck with the truck; i have no idea what it could be... maybe some wacked out fueling problem (pop pressures too high causing excessive injection and ignition lag) possibly a bad DV causing injection and ignition lag... bump the timing and see if it helps any... if that alone "helps" i'd be looking into a fuel injection problem
 
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