47 Gallon Long Ranger Aux Tank installation USA 200 series...

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Check this out. This is for water (so a lot less safety fiddling, etc.), but it's a water tank meant for spare tire mounts.

Kinda what we're talking about... If this were built with strength or shielding for impacts, etc. would be just about perfect.

What's funny is I see no indication of capacity...

$365:

Amazon.com : RV Caravan RV One-piece Spare Tire Type Water Tank In Location of Back Door GR203 : Sports & Outdoors

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Markuson said:
I'm with ya on that. I wasn't thinking of that particular tank... Just the idea of maybe fitting a tank made for an existing vehicle. I wish I had the mechanical/welding/etc. know-how to experiment more with this stuff. I feel utterly unqualified to fabricate any of that.

Just seems like a tank the size of a 33" tire could hold a heck of a lot of fuel, and I'm surprised there aren't more existing options, given that sooo many trucks have a spare location about that same size. -What's stopping someone from making a 31" equivalent tank size designed to easily fit there. I suspect it's a liability thing for a lot of companies...??
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No $hit. I'm with you on that.
 
Narkhelek said:
Seems like you could just take the Titan spare tire fuel system and modify to suit. Someone should come up with a conversion kit for the Titan STAFS solution to mount it in a LC200. TITAN Spare Tire Auxiliary Fuel System for GM, 2001-2010. (4010201) -
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They stole my idea. I just watched the installation video. Seems like it could be easily modified to fit. They said the only thing that changes between kits is the mounting hardware. The fuel pump, wiring and filter look suspect as hell but the tank looks good.

Edit: Just saw the spare tanks are only approved for diesel.
 
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Markuson said:
Just seems like a tank the size of a 33" tire could hold a heck of a lot of fuel, and I'm surprised there aren't more existing options, given that sooo many trucks have a spare location about that same size. -What's stopping someone from making a 31" equivalent tank size designed to easily fit there. I suspect it's a liability thing for a lot of companies...??
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Assuming a 33x10.5" tire:

V = pi x r^2 x h
V = 3.14 x 16.5 x 16.5 x 10.5 = 8976 in^3

To convert cubic inches to gallons, divide by 231:

8976 / 231 = 38.85 gallons

That excludes the tank thickness, so realistically an aux tank shaped like a spare tire would probably hold closer to 30 gallons, possibly less since I'm guessing anyone here who was going to pull their spare tire would want the tank to fit up underneath the frame and not reduce the departure angle.
 
Good calculation Linuxgod, the Titan tanks for Diesel Pickup spare location are 30 gallons.
 
kinda what I thought. Crazy there isn't some options. So many people use larger tires and don't keep a spare underneath. So it is the perfect place.
The gas range on the American LC's sucks. Most used on long range travel I have seen always have diesel. Not just for dependability I suspect.
It is even a pain is the US constantly stopping for gas......or carrying cans.
 
^That's a great example of thinking outside of the box. Tanks themselves aren't space age tech. The trick is really to find one that fits, with reasonable structure and mounting ability within the frame. Then all the fittings to make it work. There's seems to be too much emission regulations that prevents most businesses from providing a professional kit, so it seems to me that this has to be attacked from the grass roots level.

Here's a super simple install in a Tundra. What we don't have is the advantage of a separate fill neck, so that complicates our setup - AUX in bed fuel tank install - TundraTalk.net - Toyota Tundra Discussion Forum
 
yes I think a person could find a tank that fits and even find a lot of shops that would do it for not so much.
Read a comment on one of the youtube vids from a guy that said he does them all the time in his business.
I'm gonna look for a tank. The fuel situation on LC's.....and the range really gets on my nerves. Difficult to really overland unless you go diesel.

I have been setting up a trip across Russsia. You can do it in a car.....but I wanted to head off into the most secluded areas.....and into Mongolia.
 
What are the benefits and drawbacks of putting gasoline in a tank designed for diesel (i.e. the Titan spare tire tanks)?
 
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Here's the email from Tembo



Hello


When you want to fit our extra tank you need to relocate the carcoal canister



Met vriendelijke groet / Kind regards / Med vänlig hälsning / Mit freundlichen Grüsse


Toine Daams


Special Projects Manager


FD 4x4 Centre – Tembo 4x4 Equipment

Hoek 54A

5571GK Bergeijk

The Netherlands

Tel: +31 (0) 497 76 00 27

Mail: mailto:workshop@fd4x4centre.nl

Web: www.fd4x4centre.nl / www.tembo4x4.com / www.mushingsupplies.eu
 
The Tembo tank is manufactured by Northern Offroad Equipment from South Africa under the brand Exel. I like the fact that is gravity feed and removes the transfer pump from the equation and is installed inline with main which in theory helps with points of failure with smog stuff. The installation looks pretty straight forward. I would guess the miles to empty function would not work, the main tank would show full through the burn of the aux tank fuel, once the aux fuel is burnt then the main tank gauges would function. This solution makes for virtual 38-gallon but most likely 35ish-gallon usable.
 
^ That would be an ideal solution in my mind! Simplifies a lot of complexity and points of failure. Unfortunately I couldn't find any pics of it. It's probably plumbed similarly to the tundra tank I listed above.

There's still the issue of the charcoal canister. It's likely that the charcoal canister itself needs to be mounted higher up than the stock and this this auxiliary tank. Not many places for that. The charcoal canister itself is a part of the emissions controls that smog checks looks for.

Though I do wonder if there's way to eliminate this and trick the sensor, and without side effects of not having a charcoal canister? Or perhaps adopt a more compact canister from another model?
 
^ After driving for a few minutes with a loosely fitted gas cap, the Check Engine Light (CEL) warning will turn on. Any idea how this might be affected (or not) by an aux gas tank?
 
It definitely won't be as simple as venting the gas tank as the ECU knows if it's "open" and not sealed. So sealing is still a requirement. It can be done as the Tundra example above is able to have an gravity aux tank with no CEL's.

The trick is still the charcoal canister. There's several diagnostics for sealing and evap function, or there will be CEL's as you point out.
 
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