76 cj5 fuel filler to later style with 21gal tank which hoses? - JeepForum.com
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Unread 08-26-2013, 08:24 PM   #1
cj5russ
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76 cj5 fuel filler to later style with 21gal tank which hoses?

Hey guys, I have a 76 cj5, that had a swiss cheese tank, and janky filler cap, I upgraded to a 21gal omix aftermarket tank, and this filler neck.




I was looking for the filler/vent hoses and frankly there are a ton of em. Which ones should I go with for this application. Thanks in advance.

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Unread 08-27-2013, 06:54 PM   #2
cj5russ
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Anyone done this? Doesn't seem like too uncommon of a conversion, just not sure which of the many filler/vent hoses to buy, and would like to buy the hoses first so i kind of know where to cut the hole for the filler neck.
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Unread 08-28-2013, 07:44 AM   #3
CSP
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If the filler neck is the same year as the gas tank then the hoses should be too.
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Unread 08-28-2013, 02:22 PM   #4
cj5russ
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It's not, my cj5 had a filler neck on it like this one but it was all rotted out, and you cant really get replacements for that style anymore. So i purchased the 77+ filler neck above.
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Unread 08-28-2013, 03:32 PM   #5
CSP
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I was speaking about the replacement filler neck, not the original.

The plastic tank should be for '77 and up as well. If it isn't, send it back and get one otherwise you're on your own transitioning the different sizes of hoses that each will take.
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Unread 08-28-2013, 04:50 PM   #6
7CJ5White6
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Cj5russ.


Do you have all the original hoses and filler neck? If they are useable ill take then off your hands if you don't want them b
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Unread 08-28-2013, 05:32 PM   #7
james04si
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Quote:
Originally Posted by CSP View Post
I was speaking about the replacement filler neck, not the original.

The plastic tank should be for '77 and up as well. If it isn't, send it back and get one otherwise you're on your own transitioning the different sizes of hoses that each will take.
I would say '78+ since '77 was a unique year for gas tanks. They had the larger diameter hose like the 76 but with a nipple on the tank only about 2" long where as the 76 was about 6". I believe the 78+ never changed again only possibly difference being the 20 gallon tank vs the 15 gallon.
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Unread 08-28-2013, 06:02 PM   #8
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Did you have to do any modifications to fit the larger tank? Looking at doing this to my 76 CJ5. Can't stand the filler neck the way it is now.
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Unread 08-28-2013, 06:12 PM   #9
Chewtoy
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Indeed the '76 and '77 are the red headed step children of jeeps when it comes to the fuel tank. I have the same setup you do. The way I did it was to get the filler hose that matched the tank. Then I went down to NAPA with it and the filler neck and we found the 3-4 concentric size (fuel rated) hoses that barely slipped inside each other till I got down to the filler neck diameter and used a hose clamp to finish tightening things up. I only used a couple inches of each smaller hose, just enough to fit the filler neck. The filler neck vent tube is close enough to the same as the tank vent tube to use the same size hose.
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Unread 08-28-2013, 06:14 PM   #10
blackhawk51
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If you don't mind me asking - how much did the swap cost you and where did you source the tank, filler neck, etc from?
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Unread 08-28-2013, 06:31 PM   #11
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Unread 08-28-2013, 06:31 PM   #12
Chewtoy
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I don't recall the cost, I think I got the tank, hose and filler neck from 4wd.com. Extra pieces of hose came from NAPA. It was a pain in the butt, but I don't recall it being all that expensive.
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Unread 08-28-2013, 06:38 PM   #13
cj5russ
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The tank is the most expencive part 280 the new neck was like 30 for both pieces. chew toy not a bad idea mind posting some pics? did you just use straight hose?
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Unread 08-28-2013, 07:27 PM   #14
Chewtoy
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No I use the 76 filler hose so it matched the tank and then I cut it back to where I needed it that way it had all the right bends. The tank inlet ends up above the frame rail just for reference.

image-365252142.jpg



image-1630837394.jpg



image-4127296457.jpg



image-125671469.jpg



I hope these help.
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Unread 08-28-2013, 08:13 PM   #15
cj5russ
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Thanks! When you cut it back did it cut past the factory hole in the fill hose for the vent hose? If not how did you deal with that.
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