Gas Tank Types - Please Share

[klober23]

I'm interested in authentic and aftermarket gas tank styles mainly in the longhood. Someone please give me a crash course. I restore many 911's and notice a variety of differences. My 71 Euro 911T looks to accommodate a full size wheel and tire. I have to be a P car nerd on this one, thanks in advance for posting

[sc_rufctr]

IF you can find one a later plastic tank from a 3.2 is the best option (if you plan on keeping your car)
Install and forget.

But I'm not sure about availability in the US. I know they're common in Europe but rare as hens teeth in Aus.

[ossiblue]

Originally Posted by klober23

I'm interested in authentic and aftermarket gas tank styles mainly in the longhood. Someone please give me a crash course. I restore many 911's and notice a variety of differences. My 71 Euro 911T looks to accommodate a full size wheel and tire. I have to be a P car nerd on this one, thanks in advance for posting

Factory tanks for 911s from model year 66-73 all accommodated a full size spare and had the same fuel volume. The tanks had slightly different construction, depending on whether or not they were for CIS, MFI or carbs, and the location of the outlet/inlet ports changed as well. Generally, tanks for carbs and MFI did not have an internal swirl pot for returning fuel like tanks for CIS cars and had a drain plug located by the fuel outlet rather than under the tank. 73.5 was a one year only tank with swirl pot and made for a full sized spare. Beginning in model year 74, the tanks changed to a larger volume and inflatable spare, and all had swirl pots internally. Later tanks will fit into long hoods but will not accommodate the full size spare. The factory did provide a larger tank for long hoods, the RS tank, I believe, which is the larger volume tank later used in post 73 cars.