77 CJ-5 fuel tank - JeepForum.com
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Unread 06-23-2013, 07:10 AM   #1
kjonesie
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1983 CJ7 
 
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77 CJ-5 fuel tank

What makes the 77 fuel tanks different? Would a later model tank fit?

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Unread 06-23-2013, 09:55 AM   #2
james04si
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The 77 tank has a larger inlet diameter than the 78 and later. The 76 has the same size inlet but the nipple on it is about 6" long and the 77 is only about an inch. Kinda sucks to be an oddball but MTS has the correct filler hose and vent hoses to fit.
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Unread 06-23-2013, 10:23 AM   #3
kjonesie
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Mine is just old. Not sure if it leaks (I got the Jeep home and tore it apart). Would it be worth it to have it cleaned and coated or just buy a new one?
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Unread 06-23-2013, 10:56 AM   #4
james04si
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Depends on your money situation and how bad yours really looks. If it has a leak I would replace it. Mine has no damage or rust, probably because I live in TX. If I did have to replace it though I would look into replacing the filler neck and all with a 78+ style. Who knows how long MTS will continue making the 77 only setup if you need parts in the future.
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Unread 06-23-2013, 08:01 PM   #5
kjonesie
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Well I know the smaller vent line over the filler needs to be re welded. The P.O. JB welded it. The sending unit should be replaced too. Should I buy a later model or is there other issues I need to be concerned with?
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Unread 06-23-2013, 08:48 PM   #6
james04si
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The tanks are the same size as far as I know. The only issue I can think is the 78 and later have a rectangular filler and ours is round so you will have to cut the tub some to fit it in.
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Unread 06-23-2013, 09:28 PM   #7
kjonesie
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I'll be doing other body work anyway. My rear body mounts are both rusted out and I want to add a tailgate. Any suggestions there? Gonna get a tailgate surround from Classic Enterprises.
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Unread 06-23-2013, 10:04 PM   #8
james04si
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The PO of mine just cut out for a tailgate and put angle iron around the edges then just made his own tailgate with angle iron and some aluminum diamond plate. Its a little different but functions for as few times I have ever needed a tailgate and its one of the few mods he made that I didn't change.

He was very creative on some of his mods. I think he had more time and raw supplies sitting around than money. He made his front bumper with some c channel and a twin bed frame, made his own trailer hitch and rear bumper with angle iron, and a side mount for the spare using angle iron and some flat steel he welded together. My dash was made from spare aluminum diamond plate and the seats he had installed were held in with sheet metal screws. Yeah and somehow he ripped off the skid plate on the oil pan, nothing some screws and a lot of orange rtv couldn't fix.
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Unread 06-24-2013, 09:47 AM   #9
John Strenk
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I just did this on my 76 CJ5. I put in a Poly tank though cause I didn't want to deal with rust anymore.

Had to cut out the back to fit the recessed filler but looks good and easier to put gas in now.
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Unread 06-24-2013, 08:40 PM   #10
kjonesie
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I was loolking a poly tank too. Maybe a 20 gallon. Would it be cheesey to put one of those "bolted on" looking fuel door on the side of the Jeep?
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Unread 06-25-2013, 02:59 AM   #11
John Strenk
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NO.
I wish I did, then I would not have to modify the spare tire mount.

PO error and my bad for not checking.....
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