Modded Jeep Liberty Canister/Fuel Module
01-27-2008, 05:33 PM
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Modded Jeep Liberty Canister/Fuel Module
Here is some pics of how I modded the jeep liberty canister. Seems like there is some interest in this. So I figure I'll put these pics out and guys can use them to decide how they want to do their installs. I really could have done a better job, but I did this over the new years holidays (didn't need the truck at that time) so I was limited on what kind of parts and materials I could get a hold of. Got it done though and that is the main thing 
Top of the canister
This one has the return hose switched with the supply. So the return from the cp3 is going to the smaller inlet on the can, but it's just open the fuel just drops in wherever. The supply side of the canister is now the return. There is a tee in the return line from the AD and I have a regulator off of the tee and then it runs to the fillneck. So Initially the return fuel will fill the cup on the canister. When the pressure becomes too much for the small port on the liberty canister to handle then the fuel starts backing up and enough pressure is created to open the reg to the fillneck.
You can see the switched hose and the new pickup tube. Which is the same tubing that was supplied with the airdog. I left a piece of it immersed in diesel for 24 hours and it seemed fine while it was wet and also when it dried out. The inside is rated for diesel I was concerned with the outside. Works fine......so far
I know you can't see it and I wish I'd taken a pic of the way I cut the hose. I cut it on maybe a 30 degree angle with 2 wedge shape slits in the side. I did that just in case the hose ended up in a bad position. Because you really can't tell how the hose would end up in the canister. The canister has those springs and it's taller than the tank is deep. It compresses when you put it in, this keeps the canister from moving around at the bottom of the tank.
There are probably a 100 ways to do this so come up with some other ways and share them with the rest of us. There are a lot of posts on this in that other thread so I know alot of you guys have been thinkin' about it. But, I haven't seen any pics yet so maybe this will help someone else.
Oh and maybe later I'll post some more pics these were the ones I had already taken at time of install. There's snow on the ground outside and I don't feel like layin' in it!
Top of the canister
This one has the return hose switched with the supply. So the return from the cp3 is going to the smaller inlet on the can, but it's just open the fuel just drops in wherever. The supply side of the canister is now the return. There is a tee in the return line from the AD and I have a regulator off of the tee and then it runs to the fillneck. So Initially the return fuel will fill the cup on the canister. When the pressure becomes too much for the small port on the liberty canister to handle then the fuel starts backing up and enough pressure is created to open the reg to the fillneck.
You can see the switched hose and the new pickup tube. Which is the same tubing that was supplied with the airdog. I left a piece of it immersed in diesel for 24 hours and it seemed fine while it was wet and also when it dried out. The inside is rated for diesel I was concerned with the outside. Works fine......so far
I know you can't see it and I wish I'd taken a pic of the way I cut the hose. I cut it on maybe a 30 degree angle with 2 wedge shape slits in the side. I did that just in case the hose ended up in a bad position. Because you really can't tell how the hose would end up in the canister. The canister has those springs and it's taller than the tank is deep. It compresses when you put it in, this keeps the canister from moving around at the bottom of the tank.
There are probably a 100 ways to do this so come up with some other ways and share them with the rest of us. There are a lot of posts on this in that other thread so I know alot of you guys have been thinkin' about it. But, I haven't seen any pics yet so maybe this will help someone else.
Oh and maybe later I'll post some more pics these were the ones I had already taken at time of install. There's snow on the ground outside and I don't feel like layin' in it!
01-27-2008, 08:02 PM
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Cool - been hoping someone would post similar pics for two reasons:
- in the bottom pic, notice the supply outlet elbow on the Liberty module, there on the right - that's the same diameter as the outlet on the Dodge module - the plastic tubing from there to the fuel filter is 3/8"dia, which would be suitable for hi-output service, but for that elbow with the 1/4"dia hole - this type mod is needed when higher volume flowrate is required and you don't want to increase supply pressure to get it - 'nuther words, you get more fuel while using the same pressure, which reduces aeration.
- for further consideration -
a.) saw that elbow off, drill it out thru the cover, install your larger diameter elbow at that spot, or
b.) if a larger return-line is needed, saw the smaller return-elbow off, drill it out thru the cover, add the larger elbow at that spot, use the supply elbow for a larger return line by swapping the flex hoses - no pressure there so it won't leak
c.) then install the larger supply line on the oem filter\pickup by drilling out the original plastic barb, tapping the filter for a larger barb to take advantage of the oem pre-filter setup - leave a slight curvature in the rubber hose so it will bend without crimping - you can experiment with that while the module is on the workbench by collapsing the module to it's minimum heighth in the tank, making sure the hose curves smoothly at that heighth.
You can get ABS\PVC plastic fittings at yer local hardware emporium with appropriate cement which will permanently bond with the oem plastic for perfect sealing.
I used my module for R&D on adding a lift pump to the module for the Jeep crowd, much less expensive than the Dodge module, or you coulda had pics of the suggested mods - the lift pump replaces the plastic pickup cage
- in the bottom pic, notice the supply outlet elbow on the Liberty module, there on the right - that's the same diameter as the outlet on the Dodge module - the plastic tubing from there to the fuel filter is 3/8"dia, which would be suitable for hi-output service, but for that elbow with the 1/4"dia hole - this type mod is needed when higher volume flowrate is required and you don't want to increase supply pressure to get it - 'nuther words, you get more fuel while using the same pressure, which reduces aeration.
- for further consideration -
a.) saw that elbow off, drill it out thru the cover, install your larger diameter elbow at that spot, or
b.) if a larger return-line is needed, saw the smaller return-elbow off, drill it out thru the cover, add the larger elbow at that spot, use the supply elbow for a larger return line by swapping the flex hoses - no pressure there so it won't leak
c.) then install the larger supply line on the oem filter\pickup by drilling out the original plastic barb, tapping the filter for a larger barb to take advantage of the oem pre-filter setup - leave a slight curvature in the rubber hose so it will bend without crimping - you can experiment with that while the module is on the workbench by collapsing the module to it's minimum heighth in the tank, making sure the hose curves smoothly at that heighth.
You can get ABS\PVC plastic fittings at yer local hardware emporium with appropriate cement which will permanently bond with the oem plastic for perfect sealing.
I used my module for R&D on adding a lift pump to the module for the Jeep crowd, much less expensive than the Dodge module, or you coulda had pics of the suggested mods - the lift pump replaces the plastic pickup cage
01-27-2008, 08:32 PM
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Cool - been hoping someone would post similar pics for two reasons:
- in the bottom pic, notice the supply outlet elbow on the Liberty module, there on the right - that's the same diameter as the outlet on the Dodge module - the plastic tubing from there to the fuel filter is 3/8"dia, which would be suitable for hi-output service, but for that elbow with the 1/4"dia hole - this type mod is needed when higher volume flowrate is required and you don't want to increase supply pressure to get it - 'nuther words, you get more fuel while using the same pressure, which reduces aeration.
- for further consideration -
a.) saw that elbow off, drill it out thru the cover, install your larger diameter elbow at that spot, or
b.) if a larger return-line is needed, saw the smaller return-elbow off, drill it out thru the coverI was really really thinkin about sawing it off and putting my pickup right there, add the larger elbow at that spot, use the supply elbow for a larger return line by swapping the flex hoses - no pressure there so it won't leak
c.) then install the larger supply line on the oem filter\pickup by drilling out the original plastic barb, tapping the filter for a larger barb to take advantage of the oem pre-filter setup - leave a slight curvature in the rubber hose so it will bend without crimping - you can experiment with that while the module is on the workbench by collapsing the module to it's minimum heighth in the tank, making sure the hose curves smoothly at that heighth.
You can get ABS\PVC plastic fittings at yer local hardware emporium with appropriate cement which will permanently bond with the oem plastic for perfect sealing. Thought about this too, I think that would be a great way to go as long as a guy was sure of what type of glue and perhaps primer he'd need to use
I used my module for R&D on adding a lift pump to the module for the Jeep crowd, much less expensive than the Dodge module, or you coulda had pics of the suggested mods - the lift pump replaces the plastic pickup cage
- in the bottom pic, notice the supply outlet elbow on the Liberty module, there on the right - that's the same diameter as the outlet on the Dodge module - the plastic tubing from there to the fuel filter is 3/8"dia, which would be suitable for hi-output service, but for that elbow with the 1/4"dia hole - this type mod is needed when higher volume flowrate is required and you don't want to increase supply pressure to get it - 'nuther words, you get more fuel while using the same pressure, which reduces aeration.
- for further consideration -
a.) saw that elbow off, drill it out thru the cover, install your larger diameter elbow at that spot, or
b.) if a larger return-line is needed, saw the smaller return-elbow off, drill it out thru the coverI was really really thinkin about sawing it off and putting my pickup right there, add the larger elbow at that spot, use the supply elbow for a larger return line by swapping the flex hoses - no pressure there so it won't leak
c.) then install the larger supply line on the oem filter\pickup by drilling out the original plastic barb, tapping the filter for a larger barb to take advantage of the oem pre-filter setup - leave a slight curvature in the rubber hose so it will bend without crimping - you can experiment with that while the module is on the workbench by collapsing the module to it's minimum heighth in the tank, making sure the hose curves smoothly at that heighth.
You can get ABS\PVC plastic fittings at yer local hardware emporium with appropriate cement which will permanently bond with the oem plastic for perfect sealing. Thought about this too, I think that would be a great way to go as long as a guy was sure of what type of glue and perhaps primer he'd need to use
I used my module for R&D on adding a lift pump to the module for the Jeep crowd, much less expensive than the Dodge module, or you coulda had pics of the suggested mods - the lift pump replaces the plastic pickup cage
! If you hadn't posted over there I doubt I ever would have heard of this. Thanx again
01-27-2008, 08:44 PM
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Always glad to help - this all came about as a result of my R&D with the Jeep Liberty CRD and the air-in-fuel problems they have had all along - worked out very well: install the Dodge lift pump module in the Jeep to eliminate fuel starvation due to air, install the Jeep module in the Dodge to eliminate fuel starvation due to....air
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01-28-2008, 03:56 PM
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Before one goes through all this with the Jeep canister, has anyone determined what power level the stock canister can support? I'm thinking a guy like me could just drop the Jeep canister in and be done with it, no?
01-28-2008, 04:01 PM
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I really don't see why you couldn't just use the factory lines with the Jeep canister. I mean, the fuel lines on my Walbro pump are only 3/8" all the way to the fuel filter so why won't the lines with the canister work correctly? I could see moving up to the 1/2" draw straw if you were pulling huge HP numbers, but for someone with a lower overall HP goal, the lines included with the canister should work just fine in my opinion.
01-28-2008, 04:32 PM
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See, folks - that's what happens when someone comes in on the last post in a thread: they miss all of what the thread is all about.
So, at the risk of repeating myself, over and over and over and over:
and over -
"- in the bottom pic, notice the supply outlet elbow on the Liberty module, there on the right - that's the same diameter as the outlet on the Dodge module - (and over....) the plastic tubing from there to the fuel filter is 3/8"dia, which would be suitable for hi-output service, but for that elbow with the 1/4"dia hole - this type mod is needed when higher volume flowrate is required and you don't want to increase supply pressure to get it - 'nuther words, you get more fuel while using the same pressure, which reduces aeration."
So, PTGARCIA, you can run your stock Dodge module until you tack the second turbo on, and add nitrous, and the 2nd CP3, and etc - then you'll need to increase line size outta the tank - which is what I was trying to 'splain - you don't need the Jeep module and external lift pump till then, and then you may also need the larger line modification(s).
Clear as mud?
FYI, the Jeep module part number and price is in the other two threads - also in the first pic in this thread: on the official DCJ label on the top of the module.
So, at the risk of repeating myself, over and over and over and over:
and over -
"- in the bottom pic, notice the supply outlet elbow on the Liberty module, there on the right - that's the same diameter as the outlet on the Dodge module - (and over....) the plastic tubing from there to the fuel filter is 3/8"dia, which would be suitable for hi-output service, but for that elbow with the 1/4"dia hole - this type mod is needed when higher volume flowrate is required and you don't want to increase supply pressure to get it - 'nuther words, you get more fuel while using the same pressure, which reduces aeration."
So, PTGARCIA, you can run your stock Dodge module until you tack the second turbo on, and add nitrous, and the 2nd CP3, and etc - then you'll need to increase line size outta the tank - which is what I was trying to 'splain - you don't need the Jeep module and external lift pump till then, and then you may also need the larger line modification(s).
Clear as mud?
FYI, the Jeep module part number and price is in the other two threads - also in the first pic in this thread: on the official DCJ label on the top of the module.
01-28-2008, 04:39 PM
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Well, I can run out of fuel now, without all that stuff, so an aftermarket lift pump is definitely coming. I guess what I'm asking is will the Jeep canister pass enough fuel to not restrict flow in the high output aftermarket pumps? Haven't seen that answered here.
01-28-2008, 04:52 PM
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https://www.dieseltruckresource.com/...0&postcount=69
(edit: my bad - wrong link)
This guy didn't seem to be having any trouble - is yours higher output than his?
Anyway, it's cool if you want to change it out for external lift pump - just do the suggested mods and you'll never have any problems with fuel supply outta the tank, even if you only eliminate the 1/4" i.d. elbow and replace it with a 3/8" i.d. version
(edit: my bad - wrong link)
This guy didn't seem to be having any trouble - is yours higher output than his?
Anyway, it's cool if you want to change it out for external lift pump - just do the suggested mods and you'll never have any problems with fuel supply outta the tank, even if you only eliminate the 1/4" i.d. elbow and replace it with a 3/8" i.d. version
01-28-2008, 05:09 PM
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My bad - wrong link - try this one -
https://www.dieseltruckresource.com/...0&postcount=69
https://www.dieseltruckresource.com/...0&postcount=69
01-28-2008, 05:27 PM
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I believe you could but you would have to remove the in tank pump from the canister. I think there is a "flapper" or something that is controlled electronically and it messes with the flow. At least that's what I gathered from it. The only downfall I see to the Jeep canister install is that if something ever happens to the aftermarket lift pump, you would not have a temporary back up until you get the aftermarket unit fixed. On the other hand, not too many aftermarket lift pumps fail.