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03-10-2011, 05:58 PM
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Join Date: Sep 28, 2010
Location: elizabethton tn
Posts: 117
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Dual gastanks
How many fellow J10 owners have a second tank behind the seat? other than mine I haven't seen another one yet.
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J- Just
E- Empty
E- Every
P- Pocket
77 J10 honcho with levis interior
AMC 360
4 speed
Warn 8274 winch (8,000 pounds)
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03-10-2011, 06:13 PM
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FSJ Maniac
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Join Date: Jul 21, 2002
Location: Charlotte, MI
Posts: 3,100
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I have an in-cab tank in my current project ('63 J200/J300/J20 conglomeration). The cab had the tank in it when I got it and plan on running it along with the stock location tank.
Does yours have a manual diverter valve of some kind? If so, where is it mounted?
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-Frank
'63 J200 2WD
'63 J200 4WD: J20 Axles, extended wheelbase, factory stakebed
'63 J100 Panel Delivery
'91 Grand Wagoneer Final Edition
"If you're going to laugh about it someday, you might as well start now".
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03-10-2011, 06:14 PM
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Master Mechanic
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Join Date: Oct 01, 2007
Location: Spokane Valley, WA
Posts: 1,136
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on my project ill be running 2 20 gallon fuel cells and using the tank selector switch like used on the chevy's with dual saddle tanks.
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03-10-2011, 06:32 PM
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Grease Monkey
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Join Date: May 11, 2005
Location: CA
Posts: 334
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Is the second tank behind the seat OEM?
The stock tank in my dad's 65 ford truck was mounted behind the seat and he had a spare tank built to fit in the bed. Don't practice fire juggling with the windows rolled up!
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Seek out the authority to share his knowledge, be enlightened and fix it right the first time.
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03-10-2011, 08:00 PM
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Member
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Join Date: Feb 28, 2011
Location: A SC City Near The Sea
Posts: 237
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I have never heard of a J10 with a gas tank behind the seat. My J10's extra tank is where the spare tire should be at the rear. It is bigger than the factory one.
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1978 Jeep J10/401
1973 Plymouth Satellite Sebring Plus/400 Big Block
1981 Chevrolet C10 Step Side Shortbed
1979 Honda CX500 Motorcycle
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03-10-2011, 08:17 PM
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Grease Monkey
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Join Date: Nov 06, 2009
Location: Castro Valley California 94552
Posts: 429
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My 76 j-20 has a tank in the bed where wen you stick the nozzle, you are sticking it into a bedside saddle tank. It has a metal cover painted the factory color. No unleaded restrictor, just a big old hold for the petrol.
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03-10-2011, 08:24 PM
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FSJ Maniac
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Join Date: Jan 17, 2002
Location: Gilbert, AZ
Posts: 2,853
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I had one but pulled it. Got tired of the cab smelling like stale gas.
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'71 J2000 Gladiator
'95 YJ on Waggy axles
'80 911 Super Carrera
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03-11-2011, 04:45 AM
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Master Mechanic
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Join Date: Sep 17, 2005
Location: Farmington Hills Mi.
Posts: 871
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I had a J10 with one. It fit well, mounted nicely and was in great condition so I pulled it before I scraped it.
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I blow my horn before it happens, not after.
A good mechanic can fix their own mistakes.
Waste not war not.
Ignorant is blist.
When you're in a hurry... slow down.
Measure once... cut twice.
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03-12-2011, 08:41 PM
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Member
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Join Date: Sep 28, 2010
Location: elizabethton tn
Posts: 117
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im pretty sure mine was ordered with the extra tank behind the seat. I have the orignal window sticker i will check it tomorrow
__________________
J- Just
E- Empty
E- Every
P- Pocket
77 J10 honcho with levis interior
AMC 360
4 speed
Warn 8274 winch (8,000 pounds)
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01-23-2012, 09:35 AM
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Member
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Join Date: Dec 20, 2011
Location: Bothell, Washington
Posts: 109
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Mines stock. Its the main tank, as the truck came from the factory as a Cab and Chassis. They came that way as there was no way of knowing where or how to put a filler neck in the back as it was nothing more than a bare frame.
PO, added a stock J-truck tank in the stock pickup bed location and fabbed a fuel filler inside the service bed.
There is a diverter valve as well as an electric switch and light with a second aftermarket fuel guage, but I have yet to figure out how to use the rear/second tank.
Tank
Diverter Valve of some sort.. Dont know what its for ???
Stock Filler location and locking gas cap
Rear Tank Filler ( and some of the spares that came with her.)

Last edited by Randyre : 01-23-2012 at 10:58 AM.
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01-23-2012, 09:52 AM
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Join Date: May 29, 2003
Location: Medford MA USA
Posts: 8,883
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The DOT mandated that all tanks be removed from the passenger cabin around 1970. I'm sure the tank in your '77 was added by a previous owner.
__________________
Tim Reese
Maine beekeeper's truck: '77 J10 LWB, 258/T15/D20/3.54 bone stock, low options (delete radio), PS, hubcaps.
Browless and proud: '82 J20 360/T18/NP208/3.73, KOs, 7600 GVWR
Copper Polly: '75 CJ-6, 304/T15, PS, BFG KM2s, soft top
GTI without the badges: '95 VW Golf Sport 2000cc 2D
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01-23-2012, 01:26 PM
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Member
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Join Date: Jan 03, 2012
Location: Pensacola, FL / New London, CT
Posts: 114
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dual gas tanks on mine ~ 45 gallons
both are in the bed and it looks pretty decent. I have a switch and use one fuel gauge but it is currently out of commission

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01-23-2012, 02:13 PM
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Member
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Join Date: Dec 20, 2011
Location: Bothell, Washington
Posts: 109
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Thats a nice looking truck. Tires and lift are just right IMO  Would love some pics under the hood and inside the cab.
oops, no euphemism intended 
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01-23-2012, 04:40 PM
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Member
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Join Date: Jan 03, 2012
Location: Pensacola, FL / New London, CT
Posts: 114
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Quote:
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Originally Posted by Randyre
Thats a nice looking truck. Tires and lift are just right IMO  Would love some pics under the hood and inside the cab.
oops, no euphemism intended 
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here are pictures as requested: https://picasaweb.google.com/1062949...eat=directlink
work in progress. carpet has got to go, it has a different head unit in there which I am going to change again, has new seat belts, eventually get seats recovered, latch mechanism for the glove box, fix the gauges so those aftermarket ones can go, and find a new dash pad so that carpet cover can go. under the hood right now the list is new PS pump (works fine..but looking kind of old and may wanna add hydroboost) and heater control cable.
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01-23-2012, 04:52 PM
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Member
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Join Date: Dec 31, 2011
Location: Wisconsin
Posts: 192
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The PO of my J-10 installed a fuel tank out of a 54 Ford P/U behind the seat. I rermoved it the minute I got home with the truck. I just use the stock tank. My 72 F100 had the tank in the cab from the factory. Never had fume issue's just don't care for the fuel tank being in the cab with me.
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01-23-2012, 11:10 PM
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Member
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Join Date: Dec 20, 2011
Location: Bothell, Washington
Posts: 109
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Hey Coastie,
Overall, looks like a nice truck, should'nt take a lot to make it superb. 
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