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Thread: 1985 Ford E350 Motorhome fuel tank size

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    Registered User J.P.'s Avatar
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    Default 1985 Ford E350 Motorhome fuel tank size


    I am trying to figure out the size of my fuel tanks, front and rear, on my 1985 Jayco 25 mini I believe they are stock to the chassis which is a Econoline 350 does anyone have an Owners manual? the original engine was the 6.9 diesel and I think the gauges may be off and obviously I don't want to run the out to see how many gallons they hold. As much as I can measure a rounded edge tank it looks like the front should hold 21 gallons and the rear 24 gallons any help would be appreciated

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    6.0 and Loving It!! snicklas's Avatar
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    J.P.

    We had an 85 E-150 Conversion Van. It had the 302 and dual tanks. If the gasser and the diesel had the same size tanks. I believe the sizes were:

    Front ~21 gallons - Rated Size, it would hold a bit more
    Rear ~19 gallons - Rated Size, it would hold a bit more

    Between the 2 tanks, it was rated to carry right at 40 gallons. Which is about right, when I had the van (early to mid 90's) it was right at $40 to fill it up...... oh the days of $.99 a gallon for gas......
    Scott

    2003 Ford Excursion Eddie Bauer, White over EB Gold, Tan Interior, 6.0 PSD, 4X4, 3.73 Open/LS, TorqShift Auto, Trailer Tow Package, 3 rows of Leather , 6 disk factory indash and Automatic Climate Control, Both power front seats have "BUN Warmers"!! , XM Radio, FUMOTO Valve, Bilstein 4600 Shocks, EGR Delete, Now running Full Synthetic in the crankcase, Bare Bones Stock. Currently at ~128,000 miles

    A couple of other cars with evil spark plugs, and a hobby(obsession) of IH Cub Cadet Garden Tractors (pre-81).
    Diesels and Cubs are just like Lay's Potato Chips, "You can't have just one"


    98% of the teenage population does, will try or has tried smoking pot. If you're one of the 2% who hasn't, copy & paste this into your signature. -MidnightBlade

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    Cool Thanks, that seems about right, you would think they would put in a bigger tank. I looked and there is plenty of room to add a tank or at least set one up to transfer from. I did finally get a hold of someone at Jayco today and they are saying 42 gals. total but could not tell me how much front and rear Thanks for the info

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    be warned though, there is a little tube on the end of the sending unit that is very likely to break off and thus not be able to suck the last 3-5 gallons of fuel. This has happened on both my tanks.
    -Jimbob-

    1991 F-250 Custom, 7.3 with factory turbo, ZF42, regular cab, 4x4 (all 4 wheels turning now - Posi front, LS rear), 10-1/4 4.10LS, Baby Moose, Hydroboost, Napa coolant filter, Reading utility bed, meyer E-47 snow plow, ladder rack, Cobra CB radio, Push button ignition- no keys required. 9 Stewart-Warner gauges.
    New front end!!! Add a leaf, bilstein shocks, bushings, bearings and Posi installed. Who said D50s are junk? Now its good for another 300k

    Rebuilt engine as of 8/12. All work except machining done by me. Bored .030 over. Flycut pistons with 202 cam.

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    0-60....eventually IDIDieselJohn's Avatar
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    Does your rear tank look like this?




    That's on my 1987 6.9 Diesel E350 26ft. camper.

    It's only got that rear tank and the most i've put in it at once was 31 gallons American. I've never ran it more empty than that.



    Just curious, if you know, what are you seing for mpg with yours?


    Jon

    Driving a Diesel adds a whole new meaning to smoking the competitor!

    RETIRED (April 24th 2010) 1990 Ford F250 4x4 Custom, ZF5, L/S 4.10 gears, N/A 7.3L Diesel, 568,808km/377,497miles, still on the original clutch! Original owner. SOON TO BE RESTORED!
    1989 Ford F150 Custom, 300 Straight 6, C6, 2.73 gears, 140,000km/87,000 miles original mileage! Short box on long box frame, A real head turner
    1987 Ford E350 XL, Motorhome 26ft. N/A 6.9L Diesel, C6, 3.54 gears, 277,000km/173,000miles
    1985 Ford E350 Extended Full Panel Cargo Van, N/A 6.9L Diesel, C6, 4.11, 670,000km (419k miles)
    1994 Ford F150 XL, 4x4, 5 speed, 300-6, Reg. Cab. Short Box, 151,000km (94k miles)
    1991 Ford F350 Custom, 4x4, N/A 7.3L Diesel, E4OD, 269,000km (168k miles)
    1998 Buick Century Limited, 3.1L V6, 4T60E, 3.31 gears, 201,000km (125,000 miles) The Daily commuter.


    Description of life in Canada...
    Quote Originally Posted by FordGuy100 View Post
    What is it, somthing like

    Ten months of winter, and two months of bad snowmobiling?

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    0-60....eventually IDIDieselJohn's Avatar
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    Does your rear tank look like this?




    That's on my 1987 6.9 Diesel E350 26ft. camper.

    It's only got that rear tank and the most i've put in it at once was 31 gallons American. I've never ran it more empty than that.



    Just curious, if you know, what are you seing for mpg with yours?


    Jon

    Driving a Diesel adds a whole new meaning to smoking the competitor!

    RETIRED (April 24th 2010) 1990 Ford F250 4x4 Custom, ZF5, L/S 4.10 gears, N/A 7.3L Diesel, 568,808km/377,497miles, still on the original clutch! Original owner. SOON TO BE RESTORED!
    1989 Ford F150 Custom, 300 Straight 6, C6, 2.73 gears, 140,000km/87,000 miles original mileage! Short box on long box frame, A real head turner
    1987 Ford E350 XL, Motorhome 26ft. N/A 6.9L Diesel, C6, 3.54 gears, 277,000km/173,000miles
    1985 Ford E350 Extended Full Panel Cargo Van, N/A 6.9L Diesel, C6, 4.11, 670,000km (419k miles)
    1994 Ford F150 XL, 4x4, 5 speed, 300-6, Reg. Cab. Short Box, 151,000km (94k miles)
    1991 Ford F350 Custom, 4x4, N/A 7.3L Diesel, E4OD, 269,000km (168k miles)
    1998 Buick Century Limited, 3.1L V6, 4T60E, 3.31 gears, 201,000km (125,000 miles) The Daily commuter.


    Description of life in Canada...
    Quote Originally Posted by FordGuy100 View Post
    What is it, somthing like

    Ten months of winter, and two months of bad snowmobiling?

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    John mine is smaller (story of my life) and has indents where the straps are, someone can check my math the tank is aprox. 28x20x10 with rounded corners, I somewhat took this into account, I come up with around 24 gals. the front tank is 36x14x10 and my math says 21 gals. mileage wise I'm getting around 9 but, if you check my other posts I have been messing around with the pump and several other things, I am going on a trip to Nipton Ca. next weekend and I will see what my numbers are, I had turned the pump down 2 flats and now back up 1 flat blah blah etc.

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    Registered User J.P.'s Avatar
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    Quote Originally Posted by gatorman21218 View Post
    be warned though, there is a little tube on the end of the sending unit that is very likely to break off and thus not be able to suck the last 3-5 gallons of fuel. This has happened on both my tanks.
    I may need to siphon dry when I run the tanks down and see what things look like Thanks

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    0-60....eventually IDIDieselJohn's Avatar
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    Quote Originally Posted by J.P. View Post
    John mine is smaller (story of my life) and has indents where the straps are, someone can check my math the tank is aprox. 28x20x10 with rounded corners, I somewhat took this into account, I come up with around 24 gals. the front tank is 36x14x10 and my math says 21 gals. mileage wise I'm getting around 9 but, if you check my other posts I have been messing around with the pump and several other things, I am going on a trip to Nipton Ca. next weekend and I will see what my numbers are, I had turned the pump down 2 flats and now back up 1 flat blah blah etc.
    Wow only 9mpg? I drive a steady 60mph on cruise control and I get 11-12mpg with mild winds and flat ground.

    I've done a complete tune up on it 6 years ago (IP, injectors etc.) Made a huge difference in power and mpg!


    Jon

    Driving a Diesel adds a whole new meaning to smoking the competitor!

    RETIRED (April 24th 2010) 1990 Ford F250 4x4 Custom, ZF5, L/S 4.10 gears, N/A 7.3L Diesel, 568,808km/377,497miles, still on the original clutch! Original owner. SOON TO BE RESTORED!
    1989 Ford F150 Custom, 300 Straight 6, C6, 2.73 gears, 140,000km/87,000 miles original mileage! Short box on long box frame, A real head turner
    1987 Ford E350 XL, Motorhome 26ft. N/A 6.9L Diesel, C6, 3.54 gears, 277,000km/173,000miles
    1985 Ford E350 Extended Full Panel Cargo Van, N/A 6.9L Diesel, C6, 4.11, 670,000km (419k miles)
    1994 Ford F150 XL, 4x4, 5 speed, 300-6, Reg. Cab. Short Box, 151,000km (94k miles)
    1991 Ford F350 Custom, 4x4, N/A 7.3L Diesel, E4OD, 269,000km (168k miles)
    1998 Buick Century Limited, 3.1L V6, 4T60E, 3.31 gears, 201,000km (125,000 miles) The Daily commuter.


    Description of life in Canada...
    Quote Originally Posted by FordGuy100 View Post
    What is it, somthing like

    Ten months of winter, and two months of bad snowmobiling?

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    6.0 and Loving It!! snicklas's Avatar
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    John... I wonder if that is a 33 or 38 gallon tank, like in a Bronco. That is what a lot of guys do to get a bigger tank.... either install a Bronco tank, or the kit from LMC.

    I just wonder if the tank is the same dimensions, or close enough. My Excursion has a 44 gallon tank in the same location. Behind the rear axle infront of the hitch. In a pickup, you would loose the spare carrier (The EX it is inside, like a station wagon). But that big tank is nice on the road. Almost 700 mile crusing distance. But it really sucks when I pull into a filling station. I was nearly empty, and I mean empty, I do not have the broken pickup issue. Filled up on the way to work this morning. $175 later, I have a full tank of #2.........


    I am still a little sore...... and I didn't even get a kiss.........
    Scott

    2003 Ford Excursion Eddie Bauer, White over EB Gold, Tan Interior, 6.0 PSD, 4X4, 3.73 Open/LS, TorqShift Auto, Trailer Tow Package, 3 rows of Leather , 6 disk factory indash and Automatic Climate Control, Both power front seats have "BUN Warmers"!! , XM Radio, FUMOTO Valve, Bilstein 4600 Shocks, EGR Delete, Now running Full Synthetic in the crankcase, Bare Bones Stock. Currently at ~128,000 miles

    A couple of other cars with evil spark plugs, and a hobby(obsession) of IH Cub Cadet Garden Tractors (pre-81).
    Diesels and Cubs are just like Lay's Potato Chips, "You can't have just one"


    98% of the teenage population does, will try or has tried smoking pot. If you're one of the 2% who hasn't, copy & paste this into your signature. -MidnightBlade

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    Senior Member gatorman21218's Avatar
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    Quote Originally Posted by snicklas View Post
    John... I wonder if that is a 33 or 38 gallon tank, like in a Bronco. That is what a lot of guys do to get a bigger tank.... either install a Bronco tank, or the kit from LMC.

    I just wonder if the tank is the same dimensions, or close enough. My Excursion has a 44 gallon tank in the same location. Behind the rear axle infront of the hitch. In a pickup, you would loose the spare carrier (The EX it is inside, like a station wagon). But that big tank is nice on the road. Almost 700 mile crusing distance. But it really sucks when I pull into a filling station. I was nearly empty, and I mean empty, I do not have the broken pickup issue. Filled up on the way to work this morning. $175 later, I have a full tank of #2.........


    I am still a little sore...... and I didn't even get a kiss.........
    Hmm when I bought my truck it didnt even have a spare. I guess having a reading bed means I dont have a spare tire carrier underneath. Thats ok though as I have an 8x4 foot carrier behind the cab. I bought a spare rim and have it floating around in the bed. It makes a good tarp hold down.
    -Jimbob-

    1991 F-250 Custom, 7.3 with factory turbo, ZF42, regular cab, 4x4 (all 4 wheels turning now - Posi front, LS rear), 10-1/4 4.10LS, Baby Moose, Hydroboost, Napa coolant filter, Reading utility bed, meyer E-47 snow plow, ladder rack, Cobra CB radio, Push button ignition- no keys required. 9 Stewart-Warner gauges.
    New front end!!! Add a leaf, bilstein shocks, bushings, bearings and Posi installed. Who said D50s are junk? Now its good for another 300k

    Rebuilt engine as of 8/12. All work except machining done by me. Bored .030 over. Flycut pistons with 202 cam.

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    Registered User J.P.'s Avatar
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    Quote Originally Posted by snicklas View Post
    John... I wonder if that is a 33 or 38 gallon tank, like in a Bronco. That is what a lot of guys do to get a bigger tank.... either install a Bronco tank, or the kit from LMC.

    I just wonder if the tank is the same dimensions, or close enough. My Excursion has a 44 gallon tank in the same location. Behind the rear axle infront of the hitch. In a pickup, you would loose the spare carrier (The EX it is inside, like a station wagon). But that big tank is nice on the road. Almost 700 mile crusing distance. But it really sucks when I pull into a filling station. I was nearly empty, and I mean empty, I do not have the broken pickup issue. Filled up on the way to work this morning. $175 later, I have a full tank of #2.........


    I am still a little sore...... and I didn't even get a kiss.........
    Looks like a trip to the junkyard for a bigger tank and I will get back to you all next week on the mileage

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    Let me know how the hunt for a bigger tank goes. I have the same basic jayco setup ('87 econoline) and would like to add a larger fuel capacity tank for the WMO blend i'd like to run and keep the other tank full of #2

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    Quote Originally Posted by hazardc View Post
    Let me know how the hunt for a bigger tank goes. I have the same basic jayco setup ('87 econoline) and would like to add a larger fuel capacity tank for the WMO blend i'd like to run and keep the other tank full of #2
    Ditto Thanks

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