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Old 03-26-2007, 07:20 AM
yankeedog yankeedog is offline
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two tanks

hello all ,A thirsty boy needs a big canteen .now my 1990 grand wagoneer has the usual stock plastic tank.has anyone stuck a second auxilliary tank where the spare goes?if so which one and where did you stick the spare?i am thinking to try to double fuel capacity without having a big curb scraping tank outback any ideas?
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Old 03-26-2007, 07:32 AM
oldmanb777 oldmanb777 is offline
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Been done several times that I have seen. One used an early Bronco main tank. I'm not sure what other tanks have been used.
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Old 03-26-2007, 08:24 AM
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shackwrrr shackwrrr is offline
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i think bjs is developing a tank. otherwise people have used bronk tanks and others have used blazer tanks. its just a matter of what fits.
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Old 03-26-2007, 08:54 AM
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Mine had one that was custom built to fit the area. It also had the dual fill neck so they could both be filled at the same spot. I took both off though. I could look to see who made the tank if you want..
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Old 03-27-2007, 04:49 PM
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There was a dealer option tank in the 70's. Was a 25 gal that fit in the spare area, filled from the stock filler, then overfowed into the main to fill that. Made by trailblazer out of Boise. No longer in business, but they show up quite often. They didn'tr hang below the frame rail very much if at all. Usually can be had fo $100 or less + the shipping.
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Old 03-27-2007, 07:22 PM
yankeedog yankeedog is offline
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interesting mr goldhammer thank you for your input .wonder how it was plumbed up.one fill with over flow is just simple stupid the way i like it will research this more thankyou.
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Old 03-28-2007, 12:35 AM
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mdill mdill is offline
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I don't know if the trail blazer tank was "factory approved" or not, but Zack of ZM Jeeps is/was looking in to reproducing or updating one.

Mike D,
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Old 03-28-2007, 05:01 AM
yankeedog yankeedog is offline
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actually i am hoping to do this with readily availalble non custom made parts like a bronco tank or a chevy van tank something like that.trying to keep it simple cheap and repairable
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  #9  
Old 03-28-2007, 09:33 AM
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goldhammer goldhammer is offline
 
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The two sizes of Bronco tanks will hang down quite a bit. Might look to an S-blazer tank, or have even heard of XJ tanks being used. Do your measurements of what you can live with, prowl the boneyards, and above all else, keep us posted as to what you find and how it works out (with pics, we love pics, we need visual aids!! )
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  #10  
Old 03-28-2007, 12:21 PM
yankeedog yankeedog is offline
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  #11  
Old 03-28-2007, 12:29 PM
GWChris GWChris is offline
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I really want extra fuel capacity, but everything I read said that the back tanks hang down too low to be used without lift. If anyone finds one that works at stock suspension height, please post!
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  #12  
Old 03-28-2007, 12:31 PM
MrFurious MrFurious is offline
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The F150 rear tanks (18gal) are a lot slimmer than either bronco tank, so if you're looking for a secondary tank that would probably be your best option. The standard Bronco tank (25gal IIRC) will work if you have a 2-3" body lift but will still hang down a little blow the frame rails. The large bronco tank (33gal) is to deep even with a body lift.

Saw someone mention that Suburban tanks from certain years can be made to work as well.
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Old 03-28-2007, 08:58 PM
bigjeepthing bigjeepthing is offline
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There is a company called Aero Tanks that has a tank thats designed to go where the spare goes I think it holds 25 gal. I am having them build a 35 gal tank for back there. I should be getting it in a few days I will let you know how it is.
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Old 03-29-2007, 08:13 AM
twmattox twmattox is offline
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Aero Tanks told me they no longer made the tanks for our GWs...
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  #15  
Old 03-29-2007, 08:16 AM
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91G-Dub 91G-Dub is offline
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Quote:
Originally Posted by goldhammer
There was a dealer option tank in the 70's. Was a 25 gal that fit in the spare area, filled from the stock filler, then overfowed into the main to fill that. Made by trailblazer out of Boise. No longer in business, but they show up quite often. They didn'tr hang below the frame rail very much if at all. Usually can be had fo $100 or less + the shipping.

I have that tank in my 1991GW. Not plumbed any longer, original owner had it installed at dealer, his son "de" plumbed it before I bought it. Hangs about 2" below frame.
Been thinking about removing it, has one bolt on each side forward end and is welded to back side of trailer hitch.
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