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03-22-2020, 01:28 PM
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#1
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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Delete 35 gallon fuel tank and add 100
So I purchased a 100 gallon side mounted fuel tank ... with the safety cage .
I plan on using the safety cage and flanges and also making new flanges . Drilling holes in my chasis and mounting it in the rear center between frame rails .
There’s a cross member barley in the way and some additional components I need to move .
I’ll take pictures .
The cross member I’m not to worried about since I’ll also be adding in steel so it would act as the same thing I think.
The issues I’m having are the other components that are in the way I think are air suspension electronics which could be moved and that I have no idea of how to go about figuring out what I need to do...
I understand longer fuel lines .. and extended the sensors with longer wire and all that ... then i would also need to make a filler neck or get some fuel rated hose that I can thread to the tank then thread my fuel tank gas cap on too.
Also would 700 pounds that far back an issue .. I think it’s kind of countering the weight of the engine up front anyways . It’s a cab over style bus
Would this potentially stress out the fuel pump because it’s a longer fuel line?
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03-22-2020, 01:34 PM
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#2
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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New fuel tank
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03-22-2020, 01:36 PM
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#3
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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Need to move this cross brace with handicap lift wiring and air brake module
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03-23-2020, 01:59 AM
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#4
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Bus Geek
Join Date: Sep 2015
Posts: 3,856
Year: 2002
Coachwork: Thomas Built Bus
Chassis: Freightliner FS65
Engine: Caterpillar 3126E Diesel
Rated Cap: 71 Passenger- 30,000 lbs.
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As far as the filler tube goes, could you not use the one from the old tank?
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03-23-2020, 06:07 AM
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#5
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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The tank the bus cam with has a threaded cap on the tank. That’s side mounted . So I just unscrew the cap and put fuel in .
The one that will be rear and between frame rails . I will need to find a way to be able to fill up since it also has just a threaded cap. I will need some kind of hosing that connects to the tank and routes out to the side .
Something like a fuel rated hose that thread on to my tank then with threads that routes to the side of the bus then my cap threads to.
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03-23-2020, 08:18 AM
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#6
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Mini-Skoolie
Join Date: Jan 2020
Location: Central NJ
Posts: 16
Year: TBD
Coachwork: TBD
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I don't think the weight will be a problem at all. What's the GVWR? You're only talking about a 500lb difference between those two tanks, that's like 3 avg teenagers these days
As far as the cross member, it looks like it is bolted into the frame rails? If you can reuse the holes after moving it that would be great, less drilling through frame.?
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03-23-2020, 04:26 PM
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#7
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Bus Geek
Join Date: Sep 2015
Posts: 3,856
Year: 2002
Coachwork: Thomas Built Bus
Chassis: Freightliner FS65
Engine: Caterpillar 3126E Diesel
Rated Cap: 71 Passenger- 30,000 lbs.
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Quote:
Originally Posted by BusT
The tank the bus cam with has a threaded cap on the tank. That’s side mounted . So I just unscrew the cap and put fuel in .
The one that will be rear and between frame rails . I will need to find a way to be able to fill up since it also has just a threaded cap. I will need some kind of hosing that connects to the tank and routes out to the side .
Something like a fuel rated hose that thread on to my tank then with threads that routes to the side of the bus then my cap threads to.
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Ah, you are looking for connecting tubing. I thought the new tank did not have a filler tube.
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03-23-2020, 04:40 PM
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#8
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Mini-Skoolie
Join Date: Dec 2018
Location: Tucson, AZ
Posts: 52
Year: 1991
Chassis: Wayne Lifeguard
Engine: 7.3L IDI
Rated Cap: 23,600 lb
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I thought about putting a tank in that spot on my bus but I couldn't figure out a good way to get fuel into it. Long horizontal runs of fuel filler neck seemed like a real pain in the neck for filling large amounts. Where are you putting your filler?
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03-23-2020, 04:45 PM
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#9
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Bus Nut
Join Date: Jul 2019
Location: Suburbs of Winterset, OH
Posts: 802
Year: 2005
Coachwork: Thomas
Chassis: FS65
Engine: Mercedes 6.4L
Rated Cap: just the 2 of us
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If you are mounting the tank between the frame rails near the back, couldn't you route the fill tube out the back as well?
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03-23-2020, 04:49 PM
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#10
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Bus Nut
Join Date: Jul 2019
Location: Suburbs of Winterset, OH
Posts: 802
Year: 2005
Coachwork: Thomas
Chassis: FS65
Engine: Mercedes 6.4L
Rated Cap: just the 2 of us
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another thought from my feeble mind...
leave the original 35 gallon tank in. Mount your new tank as planned, use a electric fuel pump to transfer fuel to the 35 gallon tank as needed with a toggle switch on the dash.
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03-23-2020, 04:49 PM
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#11
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Mini-Skoolie
Join Date: Dec 2018
Location: Tucson, AZ
Posts: 52
Year: 1991
Chassis: Wayne Lifeguard
Engine: 7.3L IDI
Rated Cap: 23,600 lb
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My bumper got in the way of a rear-fill location and then I put a back porch on the thing and made it even worse.
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03-23-2020, 04:57 PM
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#12
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Bus Crazy
Join Date: Aug 2019
Location: Moved to Zealand!
Posts: 1,517
Year: 2002
Coachwork: Thomas
Chassis: Freightliner FS-65
Engine: 7.2L Cat 3126 turbo diesel
Rated Cap: 71 passenger 30,000 gvwr
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Weight should be little factor. That's how my bus came oem. My filler door is on the right side 'bout half way between the bumper and the wheelwell.
Makes a very small tunnel on the floor for a few inches.
Don't make your filler neck a rube goldberg -- you'll regret that.
Napa, etc will have filler hose -- it's expensive but you'll only need a few feet.
Or find a junk yard near you with a bus and get the hose and the door w/hinge probably for pennies...
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03-23-2020, 05:10 PM
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#13
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Mini-Skoolie
Join Date: Dec 2018
Location: Tucson, AZ
Posts: 52
Year: 1991
Chassis: Wayne Lifeguard
Engine: 7.3L IDI
Rated Cap: 23,600 lb
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Quote:
Originally Posted by banman
Makes a very small tunnel on the floor for a few inches.
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Interesting! That never even occurred to me when I was trying to figure out how to do it. Running the filler under the floor was just not acceptable because of the long horizontal run. Learn something new every day.
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03-28-2020, 04:00 PM
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#14
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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Quote:
Originally Posted by Skoolmee
I don't think the weight will be a problem at all. What's the GVWR? You're only talking about a 500lb difference between those two tanks, that's like 3 avg teenagers these days
As far as the cross member, it looks like it is bolted into the frame rails? If you can reuse the holes after moving it that would be great, less drilling through frame.?
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Gvwr is 30,000
Yeah I was concerned about the swooshing and handling when half full and if I would notice handling issues ... I’m starting to think no
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03-28-2020, 04:01 PM
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#15
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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Quote:
Originally Posted by Native
Ah, you are looking for connecting tubing. I thought the new tank did not have a filler tube.
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Yes something like a (filler tube) I think... just so I can reach the tank when pumping from the side of the bus
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03-28-2020, 04:02 PM
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#16
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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Quote:
Originally Posted by BarnYardCamp
another thought from my feeble mind...
leave the original 35 gallon tank in. Mount your new tank as planned, use a electric fuel pump to transfer fuel to the 35 gallon tank as needed with a toggle switch on the dash.
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That’s a good idea too but I want to take my oem fuel tank out for an entry door relocation
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03-28-2020, 04:14 PM
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#17
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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Yes I need access to the back bumper . Possibly have my dirt bike back there and a 3 ft bumper or double hitch cargo carrier rack...
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03-28-2020, 04:20 PM
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#18
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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Quote:
Originally Posted by AzironaZack
Interesting! That never even occurred to me when I was trying to figure out how to do it. Running the filler under the floor was just not acceptable because of the long horizontal run. Learn something new every day.
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Well isn’t the hose like 2in diameter? I’m trying to figure how I’d be able to slope that into my tank and fill from the side while it runs through the floor
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03-28-2020, 04:21 PM
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#19
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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What about extending fuel lines and wiring ?
I guess I also need to see if the fuel pump is near the engien or inside the factory tank
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03-29-2020, 09:26 AM
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#20
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Bus Nut
Join Date: Jan 2019
Location: Houston
Posts: 336
Year: 2003
Engine: Dt466e
Rated Cap: 30,000
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Quote:
Originally Posted by banman
Weight should be little factor. That's how my bus came oem. My filler door is on the right side 'bout half way between the bumper and the wheelwell.
Makes a very small tunnel on the floor for a few inches.
Don't make your filler neck a rube goldberg -- you'll regret that.
Napa, etc will have filler hose -- it's expensive but you'll only need a few feet.
Or find a junk yard near you with a bus and get the hose and the door w/hinge probably for pennies...
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Do you have pictures of the setup?
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