lift pump and cp3 - Page 2

Blackout · 02-11-2006, 05:27 AM

Thats why I said "suppose to".

I do know there are some revisions in the pump for a fact.
As to what they are I know for sure what 1 is but, I can only speculate on the others.

John if you know any of the improvements please fill us in.

__________________

Last edited by Blackout : 02-11-2006 at 05:29 AM.

rich2500 · 02-11-2006, 05:45 AM

blackout could you fill us in on the one change you know of for sure.

__________________
2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,

Blackout · 02-11-2006, 06:00 AM

Well for one, the pump has an internal like 'screen' to help keep debris from reaching the injectors.

The pump also came around the same time as the 325hp engine from Cummins so that leads me to believe there is also a slight increase in flow.

As in the past Bosch pumps were flow matched to their engines output.

Not all CP3's are the same, they do go revisions even sometimes while retaining the same part #.

__________________

02-11-2006, 07:00 AM

[quote=Blackout]Well for one, the pump has an internal like 'screen' to help keep debris from reaching the injectors.

QUOTE]

So this inlet screan is it in a location where a feller can get to it to check or clean?

With the filter in front of it ya wouldnt think there would be any debries

Blackout · 02-11-2006, 07:31 AM

Whitmore,
Not sure on where it is.
I probably knew at one point, but have since forgot.

I would say somewhere near where the fuel enters the pump.

__________________

Superduty · 02-11-2006, 08:51 AM

"Well for one, the pump has an internal like 'screen' to help keep debris from reaching the injectors."

No. The injector inlets have what is called an edge filter. There is no filter on the pump. That is what your fuel filter is for.

"The pump also came around the same time as the 325hp engine from Cummins so that leads me to believe there is also a slight increase in flow."

No. There was nothing different on the first 325s other than programming. About mid 05, there was a change up on the injectors themselves.

"As in the past Bosch pumps were flow matched to their engines output."

Totally unnecessary on a common rail engine.

"Not all CP3's are the same, they do go revisions even sometimes while retaining the same part #."

Wrong. If there is a change, the part number changes. Thus the CP3 and CP3S.

These boards are very dangerous because half of what gets written is wrong.

__________________
In Cummins we trust.

'99 Ford Superduty CC with 05 Cummins 325/600, BHAF, Donalson M090544 and ZF6 transmission. Tone ring mod.
Walbro 392 lift pump. 2 micron fuel filter on engine with filter lid pressure gauge.

I've been running a Walbro 392 since 2000. How long did your fuel pump last ?

My diesel blog:
http://common-sense-diesel.blogspot.com/

Last edited by Superduty : 02-11-2006 at 08:54 AM.

Blackout · 02-11-2006, 09:02 AM

Superduty.

"There is no filter on the pump"

I beg to differ on that one. I was told about it at the place I work and I think those that told me would know exactly whats going into the pump.

"No. There was nothing different on the first 325s other than programming. About mid 05, there was a change up on the injectors themselves."

Thats totally incorrect. The 2004.5 Cummins has a whole list of changes just to name a few: Pistons, Exhaust Valves, Injectors (delivery angles, hole count), Head, Programming (of course), Exhaust Manifold, Turbo charger. Those same hard parts are shared on your 2005 Cummins.

As in the past Bosch pumps were flow matched to their engines output.

"Totally unnecessary on a common rail engine"

Once again your wrong, our little CP3 is about maxxed out and that is why you see larger versions on larger displacement engines.

"Wrong. If there is a change, the part number changes. Thus the CP3 and CP3S" Its CP3S3 not CP3S.

Revision numbers also come into play (this also happens to engines with revised parts that you will never hear about if you didn't work for the manufacture) . That might not show up in part numbers or pump names.

I learned a little about this stuff at work.

Superduty,
A couple threads ago you didn't even know a CP3S3 existed....now your an expert on it.

Gimme a break.

__________________

Last edited by Blackout : 02-11-2006 at 09:10 AM.

Superduty · 02-11-2006, 09:48 AM

Quote:

"There is no filter on the pump"

I beg to differ on that one. I was told about it at the place I work and I think those that told me would know exactly whats going into the pump.

Pull the inlet banjo. Do you see a filter there ? If there was crud to be filtered out, that is where it would have to be eliminated because everything from there on is high precision and the fuel can't get to the outlet without going through more high precision parts.

Here is a CP3 exploded diagram. Please show me the filter. (http://www.dipaco.com/update/catalogs/RTFV1.6.pdf, page 44)

Someone was feeding you a line with the filter stuff.

Quote:

As in the past Bosch pumps were flow matched to their engines output.

"Totally unnecessary on a common rail engine"

Once again your wrong, our little CP3 is about maxxed out and that is why you see larger versions on larger displacement engines.

I'm not talking about other engines, just the ISBe. Don't change the subject. And the CP3s are not maxxed out. How many rail under pressures error codes are you getting ? I am not getting any.

Quote:

Superduty,
A couple threads ago you didn't even know a CP3S3 existed....now your an expert on it.

Gimme a break.

You better go read some of my posts on another diesel forum. Do you know what a cascade over flow valve is ?

__________________
In Cummins we trust.

'99 Ford Superduty CC with 05 Cummins 325/600, BHAF, Donalson M090544 and ZF6 transmission. Tone ring mod.
Walbro 392 lift pump. 2 micron fuel filter on engine with filter lid pressure gauge.

I've been running a Walbro 392 since 2000. How long did your fuel pump last ?

My diesel blog:
http://common-sense-diesel.blogspot.com/

Blackout · 02-11-2006, 09:53 AM

I havent got a single rail pressure code ever. But I am draining the rail everytime I roll the coals to the engine.
Thanks for the diagram.

__________________

Last edited by Blackout : 02-11-2006 at 11:21 AM.

***Tom05*** · 02-11-2006, 06:22 PM

OK Guys. This is not a peeing contest. If you have something to post keep it factual and provide us with the sources. Lets not allow any of this to go farther. Personal attacks ain't gonna happen here. If you guys want to provide us with a tech write up, you are more than welcome to. That way you can back up everything you say. We have some very intelligent people on here and I don't want to see anybody get mad and leave. Let's try to do it for the betterment of the site.
Tom

__________________
www.midwestdieselconnection.com

02-12-2006, 05:31 PM

I would still like to know about this weep hole.............I didnt know of such a thing.

a pic or diagram would be cool too

rich2500 · 02-13-2006, 03:07 AM

From what I understand it has something to do with the cascade valve and internal press.Im sure superduty could explain this much better if he would be kind enough to do so (hint,hint john)

__________________
2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,

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02-11-2006, 05:27 AM	#13 (permalink)
Blackout Cummins Fanatic Join Date: Nov 2005 Location: Southern, Indiana Posts: 145 Blackout's Truck Pics	Thats why I said "suppose to". I do know there are some revisions in the pump for a fact. As to what they are I know for sure what 1 is but, I can only speculate on the others. John if you know any of the improvements please fill us in. __________________ Last edited by Blackout : 02-11-2006 at 05:29 AM.

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02-11-2006, 05:45 AM	#14 (permalink)
rich2500 Tech Specialist Join Date: Jan 2006 Location: Pa. Posts: 387 rich2500's Truck Pics	blackout could you fill us in on the one change you know of for sure. __________________ 2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,

02-11-2006, 06:00 AM	#15 (permalink)
Blackout Cummins Fanatic Join Date: Nov 2005 Location: Southern, Indiana Posts: 145 Blackout's Truck Pics	Well for one, the pump has an internal like 'screen' to help keep debris from reaching the injectors. The pump also came around the same time as the 325hp engine from Cummins so that leads me to believe there is also a slight increase in flow. As in the past Bosch pumps were flow matched to their engines output. Not all CP3's are the same, they do go revisions even sometimes while retaining the same part #. __________________

02-11-2006, 07:00 AM	#16 (permalink)
Guest Posts: n/a	[quote=Blackout]Well for one, the pump has an internal like 'screen' to help keep debris from reaching the injectors. QUOTE] So this inlet screan is it in a location where a feller can get to it to check or clean? With the filter in front of it ya wouldnt think there would be any debries

02-11-2006, 07:31 AM	#17 (permalink)
Blackout Cummins Fanatic Join Date: Nov 2005 Location: Southern, Indiana Posts: 145 Blackout's Truck Pics	Whitmore, Not sure on where it is. I probably knew at one point, but have since forgot. I would say somewhere near where the fuel enters the pump. __________________

02-11-2006, 08:51 AM	#18 (permalink)
Superduty Tech Specialist Join Date: Jan 2006 Posts: 397 Superduty's Truck Pics	"Well for one, the pump has an internal like 'screen' to help keep debris from reaching the injectors." No. The injector inlets have what is called an edge filter. There is no filter on the pump. That is what your fuel filter is for. "The pump also came around the same time as the 325hp engine from Cummins so that leads me to believe there is also a slight increase in flow." No. There was nothing different on the first 325s other than programming. About mid 05, there was a change up on the injectors themselves. "As in the past Bosch pumps were flow matched to their engines output." Totally unnecessary on a common rail engine. "Not all CP3's are the same, they do go revisions even sometimes while retaining the same part #." Wrong. If there is a change, the part number changes. Thus the CP3 and CP3S. These boards are very dangerous because half of what gets written is wrong. __________________ In Cummins we trust. '99 Ford Superduty CC with 05 Cummins 325/600, BHAF, Donalson M090544 and ZF6 transmission. Tone ring mod. Walbro 392 lift pump. 2 micron fuel filter on engine with filter lid pressure gauge. I've been running a Walbro 392 since 2000. How long did your fuel pump last ? My diesel blog: http://common-sense-diesel.blogspot.com/ Last edited by Superduty : 02-11-2006 at 08:54 AM.

02-11-2006, 09:02 AM	#19 (permalink)
Blackout Cummins Fanatic Join Date: Nov 2005 Location: Southern, Indiana Posts: 145 Blackout's Truck Pics	Superduty. "There is no filter on the pump" I beg to differ on that one. I was told about it at the place I work and I think those that told me would know exactly whats going into the pump. "No. There was nothing different on the first 325s other than programming. About mid 05, there was a change up on the injectors themselves." Thats totally incorrect. The 2004.5 Cummins has a whole list of changes just to name a few: Pistons, Exhaust Valves, Injectors (delivery angles, hole count), Head, Programming (of course), Exhaust Manifold, Turbo charger. Those same hard parts are shared on your 2005 Cummins. As in the past Bosch pumps were flow matched to their engines output. "Totally unnecessary on a common rail engine" Once again your wrong, our little CP3 is about maxxed out and that is why you see larger versions on larger displacement engines. "Wrong. If there is a change, the part number changes. Thus the CP3 and CP3S" Its CP3S3 not CP3S. Revision numbers also come into play (this also happens to engines with revised parts that you will never hear about if you didn't work for the manufacture) . That might not show up in part numbers or pump names. I learned a little about this stuff at work. Superduty, A couple threads ago you didn't even know a CP3S3 existed....now your an expert on it. Gimme a break. __________________ Last edited by Blackout : 02-11-2006 at 09:10 AM.

02-11-2006, 09:53 AM	#21 (permalink)
Blackout Cummins Fanatic Join Date: Nov 2005 Location: Southern, Indiana Posts: 145 Blackout's Truck Pics	I havent got a single rail pressure code ever. But I am draining the rail everytime I roll the coals to the engine. Thanks for the diagram. __________________ Last edited by Blackout : 02-11-2006 at 11:21 AM.

02-11-2006, 06:22 PM	#22 (permalink)
*Tom05* Diesel Head Join Date: Dec 2005 Posts: 4,442 Tom05's Truck Pics	OK Guys. This is not a peeing contest. If you have something to post keep it factual and provide us with the sources. Lets not allow any of this to go farther. Personal attacks ain't gonna happen here. If you guys want to provide us with a tech write up, you are more than welcome to. That way you can back up everything you say. We have some very intelligent people on here and I don't want to see anybody get mad and leave. Let's try to do it for the betterment of the site. Tom __________________ www.midwestdieselconnection.com

02-12-2006, 05:31 PM	#23 (permalink)
Guest Posts: n/a	I would still like to know about this weep hole.............I didnt know of such a thing. a pic or diagram would be cool too

02-13-2006, 03:07 AM	#24 (permalink)
rich2500 Tech Specialist Join Date: Jan 2006 Location: Pa. Posts: 387 rich2500's Truck Pics	From what I understand it has something to do with the cascade valve and internal press.Im sure superduty could explain this much better if he would be kind enough to do so (hint,hint john) __________________ 2004 305/555 6sp.DIY cruise control, 373's, bd short shift,homemade boost elbow,autometer boost and egt, isspro fuel press.,zenon flares,quad race box or sp diesel stage 1 stacked with diablosport predator, modded tone ring,bd pusher pump(and yes the truck still runs if the oem pump dies)afe intake and tt,sp diesel overboost eliminator,DIY modded cp3,