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 Post subject: Lift pump in Fuel tank?
PostPosted: Wed Oct 24, 2007 12:52 am 
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Just an idea,

How about using an existing "in tank" fuel pump like the ones in dodge diesel pickups?
What about the KJ gasser unit... is that in tank?

The idea here is that it hides from the dealer a little better , for those with warrantees.

Also, it is the ideal position interms of pressurising the entire supply line.

Bill

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06 CRD LTD - Suncoast TC- Shift Kit - Spicer UJ - FRKNLIFT - F37 - Magnaflow - 22.0 City - 24@65MPH - Fumoto F-102 - AUX T Cooler - Tank Lift Pump


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PostPosted: Wed Oct 24, 2007 10:04 am 
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I think it would fit - but I'd bet the pressure specs are way too high for what we want. (I'm guessing - I don't know)

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PostPosted: Wed Oct 24, 2007 10:27 am 
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Good idea - but the in-tank pump for the EFI V6 pressures are much higher than required for CRD service - the Dodge pump is closer to requirements - big negative is tank must be dropped to install pump, then again later to replace pump - external pump is easily replaced, even if tank is full.

Using the V6 sender module with the Dodge pump could be an (expensive) option if concealment is important - the CRD module may not have the required brackets for lift pump installation.

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go


Last edited by gmctd on Wed Oct 24, 2007 12:20 pm, edited 1 time in total.

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PostPosted: Wed Oct 24, 2007 10:49 am 
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The 2.5 used a different injector pump and had a lift pump either at the tank or in the tank. It would be interesting to get some specs on that pump from one of our Euro or Aust. friends.

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Dave

'06 CRD Limited, Lt. Khaki, MOPAR Slush Mats/Skids, DrawTite Front Hitch, Mag Lite, Yakima Bars, Thule Bike Rack, Fumoto, ORM, 245/70 Revo 2

Wish list: Lift, Boulder Bars, Something Bigger in the Front and Back, More Lights


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 Post subject:
PostPosted: Wed Oct 24, 2007 11:27 am 
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Would be interesting to get more info on the Euro systems -

if the 2.5 CRD CP pump had no gearotor pump to make ~80psi housing pressure, the intank pump would not only need to supply fuel, but would be required to supply fuel at that high pressure - not even good for our requirments

also if the Euro 2.8L CP3 system does have an aux electric pump

Do the Aussie\Euro\Russian pics appear to have the Racor with primer element, tho?

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'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go


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 Post subject:
PostPosted: Wed Oct 24, 2007 12:06 pm 
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Don't believe the 2.8 Euro version has a lift pump either. Ranger1 fed me a link to an '04 article on a British car mag website where they did a test drive and review of the 2.8 when it was first available. Both reviewers made a point of wondering why in the devil the 2.8 was so much noisier than it's 2.5 predecessor.

I'd imagine those of us with lift pumps could wager a guess. :wink:

Somewhere, some time ago, I remember coming across a reference that the pre-05 CRD's used a 45 psi lift pump in the tank. :?:

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 Post subject:
PostPosted: Wed Oct 24, 2007 1:59 pm 
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It's been mentioned that Austrailian 2.8's have the same fuel systems we do (early in the Fuel filter discussions)

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 Post subject:
PostPosted: Wed Oct 24, 2007 2:36 pm 
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The Dodge Cummins used two different pumps, depending on the year
- 03-04 used an external pump mounted to the filter manager on the engine, supplying ~11psi @ 10a max - it is a draw-type

- 05-06 used an in-tank version, unknown pressure, 5a maximum, simply stating that output would always be more than demand, and that the COV would return excess fuel to the tank - it is a push-type =

Here is the very informative blurb from the very helpful $180 DCX manual (helps them send their kids to college) -

Maximum current flow to the pump is 5 amperes.
With the engine running, the pump has a 100 percent duty-cycle.
The transfer pump is self-priming: When the key is first turned on (without cranking engine), the pump will operate
for approximately 2 seconds and then shut off (Note: When ambient temperatures are cold enough to cause the
intake air heaters to operate, the fuel lift pump will operate during the entire intake air pre-heat cycle). The pump will
also operate for up to 25 seconds after the starter is engaged, and then disengaged and the engine is not running.
The pump shuts off immediately if the key is on and the engine stops running.
The fuel volume of the transfer pump will always provide more fuel than the fuel injection pump requires. Excess
fuel is returned from the injection pump through an overflow valve, and then back to the fuel tank.

Here's the oem info site, incl poopsheets
http://www.airtexproducts.com/

From DCX -

The '06 3.7 tank module with fuel pump is ~190bucks online
The '06 Cummins tank module with fuel pump is ~168bucks online

Modules and pumps not serviced separately

_________________
'05 CRD Limited
Pricol EGT, Boost
GDE Hot '11; EDGE Trail switched
SEGR; Provent; Magnaflow;
Suncoast T\C, Transgo Tow'n'Go switch;
Cummins LP module, Fleetguard filter, Filterminder
2.5" Daystar f, OME r; Ranchos; K80767's, Al's lifted uppers
Rubicons, 2.55 Goodyears
Four in a row really makes it go


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