Mom always said "Nothing is ever easy!"
FUEL TANK INSTALLATION ORDER
- Thread starter CFD244
- Start date
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Nice... I just painted my new tank, and never knew there was a "correct" year stamping.. Not that I'm doing a concourse restoration, but I still would have bought this one you posted had I known.
Which tank will you be installing in your Demon?
Are you painting with 1k or 2k paint? It looks great.
That's pretty slick rattle can work........You should get a side job as a graffiti artist
I painted my Camero with rattlecans...That's pretty slick rattle can work........You should get a side job as a graffiti artist
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Not to add to the confusion but allow me to add my experience on my 71 Demon 340 in case it helps someone else too. This car was originally ordered and delivered in the Cleveland, OH, area. So it was NOT a California emissions car. Nonetheless, it came with the 4-vent tank and the standpipe in the trunk that matches to that.
I did a thread on my tale of fuel tank woes back in April 2022.
Another Fuel tank thread - 71 Demon
The summary of that thread was during my restoration, I got the AMD tank for a 71 Demon #890-1071. It had the C11E designation but came with only the single vent near the sending unit opening. Oops - my bad, my car has the 4-vent pipe system and I wasn't smart enough to crawl under and look at the old tank prior to ordering and painting my new tank. So then I ordered a second AMD tank #890-1070-4 which has the CR11D designation stamped into it along with the proper 4 vent pipes. So I painted up that tank ready for installation. But then, oh no...when I went to install this second 4-vent tank, there was no way to get the fill pipe in it and through the trunk floor heavy rubber seal and align it to the quarter panel. NO WAY! I would have needed to severely buckle the quarter panel in order to make it line up! No amount of moving the tank would get it to line up. The location of the fill pipe in the tank hole was definitely not in the correct location.
So then I tried the incorrect single vent/CR11E tank and lo and behold it all aligned up perfectly. So that's what I used. Like I mentioned, I documented all of this when I was going through it in my old thread shown above. So my conclusion from all of this was if you have a later-built 71 Demon, you need the 11E tank but with whatever vent tube arrangement your car has. Not sure if anyone makes that 11E tank with the 4 vent pipes but at the time I did mine, I could not locate one like that. It wasn't funny at the time, but in looking back at pics on my kitchen floor, I had 3 fuel tanks (one was the original tank) and one unhappy wife as we tried to figure out what the heck was going on!!!
I did a thread on my tale of fuel tank woes back in April 2022.
Another Fuel tank thread - 71 Demon
The summary of that thread was during my restoration, I got the AMD tank for a 71 Demon #890-1071. It had the C11E designation but came with only the single vent near the sending unit opening. Oops - my bad, my car has the 4-vent pipe system and I wasn't smart enough to crawl under and look at the old tank prior to ordering and painting my new tank. So then I ordered a second AMD tank #890-1070-4 which has the CR11D designation stamped into it along with the proper 4 vent pipes. So I painted up that tank ready for installation. But then, oh no...when I went to install this second 4-vent tank, there was no way to get the fill pipe in it and through the trunk floor heavy rubber seal and align it to the quarter panel. NO WAY! I would have needed to severely buckle the quarter panel in order to make it line up! No amount of moving the tank would get it to line up. The location of the fill pipe in the tank hole was definitely not in the correct location.
So then I tried the incorrect single vent/CR11E tank and lo and behold it all aligned up perfectly. So that's what I used. Like I mentioned, I documented all of this when I was going through it in my old thread shown above. So my conclusion from all of this was if you have a later-built 71 Demon, you need the 11E tank but with whatever vent tube arrangement your car has. Not sure if anyone makes that 11E tank with the 4 vent pipes but at the time I did mine, I could not locate one like that. It wasn't funny at the time, but in looking back at pics on my kitchen floor, I had 3 fuel tanks (one was the original tank) and one unhappy wife as we tried to figure out what the heck was going on!!!
I removed and reinstalled my tank earlier this month. Being a 75, the filler tube slides in from the outside of the quarter panel. Not sure what year they stopped the filler tube from being installed from the inside of the quarter panel and it sounds more complicated.
Before reinstalling the tank I tried putting the filler tube into the grommet/tank on the ground to see how difficult it would be. I’ve read a lot about using lube (dish soap, Vaseline to WD-40) to help get the filler tube in so was prepared for a battle. It was super tight getting it in which I though was weird since I bought a new grommet from DMT a couple of months ago after reading a lot about the diameter of some grommets not being the right size. Even installing the DMT grommet into the tank was a struggle which was foreshadowing. I tried some WD-40 on the grommet and the filler to be and that didn’t really help much either.
I looked at my old grommet and it was still in great shape so reinstalled it and then test fitted the filler tube. Without any lube the tube went in with not much of a struggle. I then lifted the tank up (I had emptied it so didn’t need a helper) and got both straps on tightening the nuts about halfway along the J bolts.
Then inserted the filler tube from the outside of the quarter panel (with foam ring/circle on prior to putting tube thru the quarter panel) and tried slipping the trunk floor seal on once the tube end was close to the tank grommet. It was a struggle so wiped some WD-40 on the tube and the floor seal slid right up. Then inserted the filler tube into the tank. It went in pretty easily twisting it to help it in until it got close to the quarter panel. I had the outside of the quarter panel tapped pretty good in case the flange touched the paint. Once the outer flange of the filler tube was almost touching the quarter panel, I moved the tank flush up against the trunk floor/spare tire curve and tightened up the nuts on the J bolts. Then inserted the filler tube so the foam ring/circle was compressed against the quarter panel and screwed in the 4 screws to attach the tube flange to the quarter panel. Then slid the floor seal down to the trunk floor and put the 5 screws in to hold that down.
I’ve since filled the tank and gone around some corners and don’t have issues with gas leaking around the gasket/filler tube. Not that I dream of dropping and reinstalling gas tanks in my Scamp but it was a pretty simple process.
Before reinstalling the tank I tried putting the filler tube into the grommet/tank on the ground to see how difficult it would be. I’ve read a lot about using lube (dish soap, Vaseline to WD-40) to help get the filler tube in so was prepared for a battle. It was super tight getting it in which I though was weird since I bought a new grommet from DMT a couple of months ago after reading a lot about the diameter of some grommets not being the right size. Even installing the DMT grommet into the tank was a struggle which was foreshadowing. I tried some WD-40 on the grommet and the filler to be and that didn’t really help much either.
I looked at my old grommet and it was still in great shape so reinstalled it and then test fitted the filler tube. Without any lube the tube went in with not much of a struggle. I then lifted the tank up (I had emptied it so didn’t need a helper) and got both straps on tightening the nuts about halfway along the J bolts.
Then inserted the filler tube from the outside of the quarter panel (with foam ring/circle on prior to putting tube thru the quarter panel) and tried slipping the trunk floor seal on once the tube end was close to the tank grommet. It was a struggle so wiped some WD-40 on the tube and the floor seal slid right up. Then inserted the filler tube into the tank. It went in pretty easily twisting it to help it in until it got close to the quarter panel. I had the outside of the quarter panel tapped pretty good in case the flange touched the paint. Once the outer flange of the filler tube was almost touching the quarter panel, I moved the tank flush up against the trunk floor/spare tire curve and tightened up the nuts on the J bolts. Then inserted the filler tube so the foam ring/circle was compressed against the quarter panel and screwed in the 4 screws to attach the tube flange to the quarter panel. Then slid the floor seal down to the trunk floor and put the 5 screws in to hold that down.
I’ve since filled the tank and gone around some corners and don’t have issues with gas leaking around the gasket/filler tube. Not that I dream of dropping and reinstalling gas tanks in my Scamp but it was a pretty simple process.
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