Injection Pump

[DSiemens]

What application is a Cummins P/N 3916992 (Bosch VE Rotary Pump) for. I have a burnt 1st Gen motor from a 92 and was wondering if that model of pump will work. I believe it's a 160HP pump and they are TAN in color. Anyone have ideas? thanks. What is the proper pump?

 

[A Johnson]

My book says that a 3916992 is for a an 804 cpl which is 160hp@2500 rpm 400ftlbs@1700 rpm. It also says that it has a 24volt solenoid so make sure you have the correct solenoid on it.

I'm not sure exactly what you are trying to do but if both engines have identical cpl#s you should be just fine. Also the tan color is probably because it is a Cummins Recon. Recon fuel pumps normally have an RX after the part number hope this helps

 

[DSiemens]

help. What is the 804Cpl mean? How do I find out what CPL my motor is? How does one change the Solenoid? I know, so many questions. I really thank you for your help.

 

[A Johnson]

CPL means control parts list, this is the list of the performance parts in your engine, fuel pump, injectors, pistons, camshaft, are all examples of performance parts. Different cpls may use some of the same performance parts. Example cpl804 and cpl 806 may use the same camshaft and injectors but different fuel pumps.

That said, what you need to do is find out what CPLs' you are dealing with. It should be on the engine data tag, the same place where you find the engine serial number. If you cant find the cpl but can trace down the engine serial number then any Cummins store will be able to tell what the CPL is for a particular serial number,

My guess is that if both fuel pumps are off of 160Hp dodges then you arte probably good to go. I'm pretty sure even if you bolt any old fuel pump on it will run as the pump controls engine speed thru the governor in the pump. You may be over or under fueled though when you get to using horespower.

The solenoid I'm talking about is the shut down solenoid on the rear of the pump, it has an place for your power wire. A 15/16 wrench should take it out. If you can read the writing on it it should say whether it is 12 or 24 volt. Tip: smack the solenoid with a brass drift tword the direction you want it to turn , if it is real tight. There is a spring and a plunger underneath it so pay attention.

 

[Midnite]

Originally posted by DSiemens

help. What is the 804Cpl mean? How do I find out what CPL my motor is? How does one change the Solenoid? I know, so many questions. I really thank you for your help.

For what it's worth, according to my copy of TDR #13, CPL 804 was the engine used in trucks from '89 to 1/1/91. Your '92 engine would either be CPL 1351 or 1579.



I would call a Cummins shop and ask what differences, if any, there are between a CPL 804 pump and a CPL 1351 or 1579 pump.



Mike

 

[Power Wagon]

The cummins guys won't have a clue about the pump's settings.



If Midnite is correct about the years (and it seems right to me, but I have a horribly effective forgetter), the pump will work fine on your engine, BUT it is calibrated to a whole lot less fuel than the one your engine is asking for. The early injectors flowed far more fuel than the later ones (non-intercooled = early w/9mm tips, intercooled = late w/7 mm tips), and so the pumps were set far lower. I would suggest that if you want to use this pump, instead of cranking it up, that you change over to performance injectors, if you're going to use it in a later engine.



In this case, Cummins can help you, because they have a supercession guide, which will tell you what 7MM tip injector to use in place of the high-flowing 9 MM tip injectors - just make sure that they don't call for a fuel pump change to do so. Don't use Cummins ReJunk injectors, though. Go for the new equivalents from Bosch or new from Cummins. There is a chance that the superceding injectors from Cummins are actually new, though, even if carrying RC part numbers. The reason Cummins should have an supercession or replacement guide, is that ReCon heads all went to the later style head, with the 7MM injector tip. It's a better head design, as well. So, they must have, somewhere in the bowels of thier parts books, a 7 MM injector that flows like the old 9 MM's from the 89-90's.



Come to think of it, that would be the one to put in my truck, if I could find it. I think I'll do some investigating

 

[scott4glamis]

PW, I am following you, find out the # and post it , it might be interesting to see what they are equal to: lucas, etc. . might just be a cheaper way to get more h. p. Good luck and keep us posted.

 

[Power Wagon]

It occurs to me that the early injectors with 9 MM tips were only 4 hole. The PW injectors have either 5 or 6 holes (don't recall off the top of my head), but don't produce as much power gain as the early injectors would.



It coiuld be that the substitution injectors will have more holes, too.



The Lucas smokers have only 4 holes, I'm told. . i'll be trying to spec them out this week, to see what I can find about them.

 

[NuttyMopar]

CPL number or Serial number

If the markings on the side of the case cover has been painted or wiped clean so I can't make out the CPL at all, where do I look from there to find out my Engine's serial number or CPL number?