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The reason I ask is I am getting ready to have some bodywork done. Mostly it's rust removal and rust prevention stuff but I am seriously thinking of including this as I don't particularly like the design and problems associated with the original gas tank/ and filler neck.
 

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monza

I have and I LOVED it! super cool and no bent door . I sold the car a while back . The flip tops can be found at a good marine supply store. Dont get the alum. ones or the 'bobber' type on ebay, the are kind of crappy and you have to modify the thing to really make it look pro, and stainless + TIG = Nice.
I can send you some shots I have of the interior if you PM me , but this thread should get you 90% there.

http://www.alfabb.com/bb/forums/showthread.php?p=264995#post264995
 

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Jaguar filler cap assembly

I've put a Jaguar XJ filler on my '74 GTV. I cut the whole body panel around the filler from the Jaguar, so I've got a nicely finished radiused edge around the cap, and a recessed pocket with its own drain and vent holes already in place.

The Jaguar filler pipe was quite a bit bigger in diameter, so I adapted it to the Alfa tank with a section of rubber tube (from a Toyota, of all things. Saab 900s and Porshce 911s have similar OEM-quality rubber hoses). You'll need to cut and reweld the Alfa tank filler neck at the correct height and angle to meet up with your new cap (can't be 1-piece, like original, since the cap stays with the body when the tank comes out), so include this work in your price considerations.

There's a chassis bracing panel below in the upper corner of the trunk, which has an oval cutout. This kind of dictates where the filler can pass through, unless you want to cut out the bracing panel (bad idea), or have the filler stick out the trunk lid (cool vintage Trans-Am look, but a hassle to make weatherproof, plus you'll loose trunk space). This places the filler cap right near the lower edge of the rear window, and near the crease at the top of the rear fender. A small or medium -sized Monza cap will fit in that space. The biggest size cap won't, without overlapping the crease. I've tried. I'll post pics over the weekend.

I'm in the middle of fitting a real Monza cap on my vintage Mercedes, and it's a huge hassle and will take a lot of fiddly fabrication to get it to look finished. The hardest part is making it recessed into the trunk lid with a nice radiused edge and fabricating a water drain and overflow system. But it looks more vintage race cool.

The beauty of the Jaguar cap is, if you cut the whole mess out at the junkyard, it'll look OEM finished. Plus, it has a lock and key.
 

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fliptop

ran across some shots of my old 72 which is in good hands up north.
I did all the work on this mod myself and it was a real test of nerves.
It is rigid, mounted to the tank , so when you open the deck lid, it renders 1/3 of the trunk useless, but thats made up in cool points. The flip top is welded to a catch/drain pan with a drain tube going down to behind the read end. a smaller diameter male lip is welded around the trunk lid and fits into the drain pan lip making a nice intigration. I places some PSA foam tubing on the underside of the trunk lid to seal and to stop vibration.
It was ALOT of fitting, in fact the only way I could make the two components line up was to remove the rear driver tail light, close the trunk lid, match up the tubes , pans and lips and stick my mig gun in there and tack it together best I could. It did work flawlessly however, and saved me seconds in the pits.
 

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Jaguar filler pics

Here are a few pics of my '74 GTV with the Jaguar filler.
The location was dictated by the hole in the chassis panel inside the trunk. I cut about 1-2" of Jaguar sheet metal around the filler hole. The recess in the body includes a water/overflow drain.

Of course, you can fit a Monza cap in the same location, either on the surface or partly recessed. If it's recessed, you'll need a water/overflow drain.

The blury picture from inside the trunk gives a rough idea of where the new filler cap lines up with the stock neck of the fuel tank.

Sorry about the large file sizes... having trouble with my camera software right now...

Cool '72 GTV, BTW.
The through-the-trunklid approach is a "period correct" racing setup, seen on some TransAm cars, but it does limit your trunk space. I'm doing a similar setup on my '66 Mercedes, just for fun, with a similar water/overflow catch pan below the trunklid and a rubber weather seal. Lots of work to get everything to line up.

George
 

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Monza Filler Cap

A BBer from Egypt did something like that, too, but I can't find him...
Hi Scottalfa here I'm, It took the denter specialist quite a while nearly a week of work to fix the Filler cap specially to fix the surrounding area to the cap itself, it's a Mini Cooper S Filler Cap with the plastic hardwhare that comes with it easy to get from any BMW/Mini Dealership from the parts counter and here's the parts number:
1- 51 17 7 158 196 Fuel Cap
2- 51 17 7 077 534 Hinge
3- 51 17 7 076 054 Cover

And the parts will cost around U.$110.00 to U.$150.00 depending on parts prices in the U.S.

See pics attached of the process during resto and after.

I find the Jaguar filler cap to british looking for the Bertone but was going to use it until I saw the Cooper S Cap it's british also but looks sleeker on the car:eek:
 

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Monza Filler Cap

Another set of pics. during resto and after, hope it will help you.
 

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