if its a 29 gal tank it sounds like the stock CCSB tank, if it is the stock tank you can buy larger diesel tanks up to about 52 gals or so. I don't know of any 29 gal rear mounted tanks, rear tanks came in excursions and cab/chassis trucks and vans.

 

 

Okay,
It has been a few years and I had not had the time to mess with this until recently. I was only doing local trips, now I go to Arizona from California a few times a month so it is now an issue for me again. I got the dimensions of the Excursion Gas tank, they are supposed to be 34" X 40" X 19" The tank that was put in my Excision is 35" X 33" X 9". So I am very disappointed in the company that did the conversion! This thing is like driving with a girl with a small bladder that has to stop at every gas station!!! Along with the fact it never has read all the way to full since i received it

Never could get a straight answer and talked with other companies that do the conversions and they use the 44 Gallon Tank!!

SO I am on the hunt for a 44 Gallon Excursion Diesel Tank, there is one on E bay right now but I thought I would see if anyone here happened to have one for sale?

Thanks

 

Okay,
Now I suspect the dimensions given to me! I ran a volume calculator and the bigger dimensions show much higher than 44 gallons but the smaller dimensions show 45 so it should be the correct tank! in the truck

Does someone else have a tank they can measure?

 

Your dimensions indicate a square shape and the stock tank is not square, it has a slope at the back, the bottom portion is likely what you didn’t include

 

I think the issue is a bad sending unit in the fuel tank, you said that it never shows full and I assume you are filling up when it reads near empty and only needing 29-ish gallons....Correct?
You do in fact have a 44 gallon Excursion tank under the rear, pictures in post #31 in this thread clearly show it and I think there are also pics that show where the SD/EX frames are spliced up front.
https://www.ford-trucks.com/forums/1...onversion.html
And are you still only getting 10 MPG out of that 6.7?

 

Thanks for the pictures!! My son is using the truck to head to Havsu today but next week going to drop the tank so this picture is extremely useful!!!

 

Thank you!! I did finally get a hold of someone from RAD-Rides that was around when the truck was built, but he wasn't able to really give me any insight as he was not directly involved in the bill. The truck was built off of an F250 Super Duty Platinum,156" wheelbase. It shows the stock tank for that truck in 2016 with Diesel engine is actually 26 Gallon I do have the window sticker. that shows the wheelbase and the brochure that shows the tank sizes. When it is full the gauge reads slightly to the left of the Full Line.

They think that maybe they used the sending unit from the original truck which adds to the list of possibilities

Possible Problems

• Tank is not a 44 Gallon tank
• Original Sending unit for 26 Gallon tank is being used and is too short for the 44 Gallon Tank
• Existing unit not scaled for a 44 Gallon Tank
• Bad Sending unit altogether
• Problem with filler Neck

I have had this truck for 4 years now as bought January 2017 New. and the inconsistency of the gas gauge, the DTE and the Trip section fuel used have alweays been an issue but have lived with it.

If anyone else can think of anything i need to add to that llist to check please let me know. I appreciate the help from people her on this forum!!