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Discussion Starter · #1 ·
Just saying Howdy! I have '18 that has been made kosher. Just need a bit bigger fuel tank.

Wondering if anyone did a swap of factory 26 gallon tank to ford factory 36 gallon tank? I'm interested in 36 gallon that comes equipped on gasoline/benzene motored F-150s. Also has anyone tried using F-250/350 Super Duty fuel filler neck on F-150?

I understand that tank straps are different.

Fuel pump mounting gaskets are the same part numbers so the diesel pump should bolt right in.

Not sure on fuel lines on how they will match up length wise and how the filler neck from Super Duty will mate with 36 gallon tank.

Not worried about programming DTE.

I'm thinking of doing the swap next week. Any useful info would be appreciated.
 

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Just saying Howdy! I have '18 that has been made kosher. Just need a bit bigger fuel tank.

Wondering if anyone did a swap of factory 26 gallon tank to ford factory 36 gallon tank? I'm interested in 36 gallon that comes equipped on gasoline/benzene motored F-150s. Also has anyone tried using F-250/350 Super Duty fuel filler neck on F-150?

I understand that tank straps are different.

Fuel pump mounting gaskets are the same part numbers so the diesel pump should bolt right in.

Not sure on fuel lines on how they will match up length wise and how the filler neck from Super Duty will mate with 36 gallon tank.

Not worried about programming DTE.

I'm thinking of doing the swap next week. Any useful info would be appreciated.
Welcome! If you do the swap I think you will be the first one here to swap in a factory tank. Several did the Titan tank installation which can give a 40 gallon or so aftermarket tank. Our site administrator has done this I beleive so I am certain he will be interested in your experience.

One limiting factor is the def tank which may be in your way as you proceed. It is located adjacent to the fuel tank.

A few of us have done some work to delete the green fuel filler. It is not an easy job but if you are able to swap a F250 in that would solve this. Please update your post with your progress- it should be interesting to all of us as this is uncharted territory. Hoping the best for you and keep us informed as you go.
 

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Discussion Starter · #3 ·
One limiting factor is the def tank which may be in your way as you proceed.
Thanks for welcoming!
I'm not worried about def tank since I'm not using it. Tank just stays there so no small animals be getting free rides. I will try to see if there is enough room, if not I can always get rid of def tank; dead weight on my truck.
 

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Factory Ford 36 gallon tank available on the gassers is not available on the F150 diesel as an option, due to the location of the DEF tank which will be in the way. Going to guess the fuel neck should line up but not sure about anything else. Not sure what you do with everything else hooked up to the DEF tank like the heater/wiring/sensors.

By "kosher" I assume you mean you have deleted?

I have a Titan 40 gallon XXL tank installed on my 2018 F150 PSD Platinum which I haven't had any issues with. Made a 700+ trip to Charlotte last month without having to refuel, so the extended range is nice if you like to drive. My dealer installed but it looked pretty straight-forward from their installation instructions. Titan designs their tanks to work around what is left when you remove the factory 26 gallon tank and re-uses the factory fuel level sensor = it's pretty much a bulk swap of tanks that doesn't interfere with the factory fuel neck or factory DEF tank.

Sounds like your decision has already been made, so let us know how you make out with this conversion. FORScan has the granularity to dial in any size tank, so the DTE programming in FORScan is the least of your worries.
 

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Discussion Starter · #5 ·
jmperlik,

Yes, I was under the same impression that 36 gallon was not optioned for diesel due to def tank. The F-150 fuel pump mounts the same as gas F-150; On the other hand F-250/SD diesel pump mounts outside the tank/ their tanks are way different design.

Yap, kosher is deleted. Snipped all the dirty stuff. I can get rid of def tank also, its not being used; all the wiring just going to get removed/unplugged.

Stopping to get fuel isn't huge concern, its just when there is no diesel station to fill up that's what bothers me. I get about 16mpg with equipment trailer. Those 26 gallons get emptied out quick when driving out west especially during the night when bunch of diesel stations are closed.

My biggest reason for going with 36 gallon is its cheap. Used tank is under $300 shipped, with straps and SD filler neck. And another reason is that I get to keep stock clearance. Truck has been off road on some ruts with mud into floor mats.

I figured if I'm going to drop the tank, wouldn't be a bad idea to upgrade to a bigger filler neck at the same time.

I have most of the FORScan mods;
 

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Interesting, sounds like you may plow some new ground. Please keep us updated on this project!
 

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jmperlik,

Yes, I was under the same impression that 36 gallon was not optioned for diesel due to def tank. The F-150 fuel pump mounts the same as gas F-150; On the other hand F-250/SD diesel pump mounts outside the tank/ their tanks are way different design.

Yap, kosher is deleted. Snipped all the dirty stuff. I can get rid of def tank also, its not being used; all the wiring just going to get removed/unplugged.

Stopping to get fuel isn't huge concern, its just when there is no diesel station to fill up that's what bothers me. I get about 16mpg with equipment trailer. Those 26 gallons get emptied out quick when driving out west especially during the night when bunch of diesel stations are closed.

My biggest reason for going with 36 gallon is its cheap. Used tank is under $300 shipped, with straps and SD filler neck. And another reason is that I get to keep stock clearance. Truck has been off road on some ruts with mud into floor mats.

I figured if I'm going to drop the tank, wouldn't be a bad idea to upgrade to a bigger filler neck at the same time.

I have most of the FORScan mods;
The diesel Super Dutys have an in-tank lift pump just like the diesel F150s. Though now you've got me wondering if we could "upgrade" our lift pumps for more capacity with an OEM Super Duty lift pump.
🤔🧐

Super Duty:

F150:
 

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Discussion Starter · #8 ·
navyR113,

I didn't know about new SD had in tank fuel pump. But it should work, tried fuel lines from 6.7 and they fit right in onto 3.0 fuel pump. Fittings are the same the only difference is that SD fuel lines are a bit larger.
 

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Discussion Starter · #9 ·
I couldn't do a tank swap. Did get them next to each other to compare, and look at the idea to go forward. The 36G tank has pickup about 14 inches back; requires longer fuel lines in order for to connect to original fittings. Also the original 26G tank has vent line but 36G doesn't come with one.

The location on fill up hole are some what close and very doable. The vent line can be solved with 3/4 inch bulkhead fitting.

36G tank will NEVER fit with def tank in place or even brackets that hold the def tank. So anyone who attempts this swap must have their truck deleted. Bracket needs to be cut off from the frame, well at least one for sure.


Well, not everything was lost, got SD filler neck in.
The filler neck has to be welded together, using SD top portion and 3.0 at the neck down. Reason for welding is that SD filler neck mounts right at the top and stays ridged - there is no way to mount it to rubber portion in F-150. The 3.0 filler neck mounts to the frame with the single bolt, that portion gets to be reused.

I didn't lift the bed as Ford manual calls, I just cut the original filler neck at the turn and later on used the rubber hose to reconnect.

Need to get make longer fuel line and bulkhead fitting and fill try again. Kind of busy right now hopefully will get some time to complete the swap.

Motor vehicle Automotive tire Automotive exterior Automotive wheel system Gas
 

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Stroki, thanks for the great info! It looks like the rear frame crossmember location on the 26G would be right where the fuel pump is for the 36G F250 tank. Is that a show-stopper?
 

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Here I thought you were attempting this transplant with a 36 gallon F150 Extended gasoline tank...
 
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Discussion Starter · #12 ·
Stroki, thanks for the great info! It looks like the rear frame crossmember location on the 26G would be right where the fuel pump is for the 36G F250 tank. Is that a show-stopper?
I'm not sure about tank from F-250, I was using 36G from gasoline F150. The tanks in the pictures are both from F150s, mine was the smaller one. The provision for F150's with 36G and designated bracket would bolt right into F150'S frame if there wasn't another bracket that was welded on by Ford in order to hold def tank.

I think eventually it will have 36 gallon tank. Now, I'm just looking to source bigger fuel lines to be similar size as SD so later on I could drop SD pump when I need more fuel.
 
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