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

This pee pump is confusing me.

Old Mar 7, 2012 | 12:35 AM
  #1  
1stgenblowingsmoke's Avatar
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Default This pee pump is confusing me.

So my dad has the 96 5 speed that will rev to 3200 on the highway and is a dog till it hits 2000rpm then throws you in the seat till about 2900 but will hit 3200 rpm's. He bought it this way n can't figure it out it has a light haze at WOT. We know it has a BHAF and 4" tbe that's it performance wise but has a few other BD parts like the exhaust brake, exhaust, KDP tab. It would destroy my old 90 that I had n I used to race ricers with it . We do know it has the tamper proof lock screw on the AFC cover but has some number engraved in the top of the pump between the DV's and timing case. OH all the part numbers on this pump have the paint scraped off. Anyone have an idea what it may be?
 
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Old Mar 7, 2012 | 07:47 AM
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94 12valve's Avatar
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I'm gonna assume its not a stock charger on the truck ... what your dad needs is an afc adjustment. adjust the pre boost screw in a turn and see if that helps.
 
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Old Mar 7, 2012 | 02:01 PM
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It's a stock HX35 from the looks of it and the wastegate opens at 24 psi. I'm temped to go outside n put a hose clamp on the waste gate line n see how long it takes him to notice.

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Just an hx35 even has the silencer ring still.
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That's the number I was talking about that has been engraved in the casing it says AH21901
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Old Mar 7, 2012 | 03:17 PM
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don't plug the wastegate thats the best way to blow that charger up. Have you checked for boost leaks? there is no reason the truck should be a dog under 2k with a hx35.
 
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Old Mar 8, 2012 | 01:38 PM
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What is injection timing at?
 
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Old Mar 8, 2012 | 07:40 PM
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Originally Posted by MillerBoyzDiesel
What is injection timing at?
Not I don't plan on plugging it off. I read putting a hose clamp on the wastegate line to crimp off the rubber line a lil will work the same way as a boost elbow. But I know I don't get it either. I'll have to look again but all the intercooler boots look fine.

No clue no idea how to check either.
 
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Old Mar 8, 2012 | 08:17 PM
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Originally Posted by 94 12valve
don't plug the wastegate thats the best way to blow that charger up.
But its an hx35, plug the WG, blow it up and get a bigger charger
 
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Old Mar 8, 2012 | 08:58 PM
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Originally Posted by sawdustmaker
But its an hx35, plug the WG, blow it up and get a bigger charger
Wait why would it blow up if it doesn't have the fuel to overboost the turbo? 1st gens have no wastegate and a HX35 is pretty much the same as H1C.
 
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Old Mar 9, 2012 | 08:28 AM
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excess drive pressure. the 1st gens have a 18 and or a 21cm housing and the HX has a 12 caa freakin boom! and an HX is a fine turbo for stockish applications.
 
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Old Mar 9, 2012 | 11:17 AM
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just because they look fine doesn't mean there not leaking, you will need to rig up a boost tester to check for leaks.
 
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