I need some ideas - and I also asked this on the other forum I follow. Unfortunately the ideas didn't pan out so I need some other fine minds thinking about this.

My '31 has a rear mounted gas tank - a Tanks, Inc '32 tank. It has their standard roll over valve which is also the tank vent as well as an unvented fill cap. The fumes coming out of the vent hose are b-a-a-a-d and to the point that there is even some liquid. Overnight with the garage doors closed it's unbearable until it airs out. One suggestion was to use an early '70's Chevy p/u vapor canister. Not a bad idea but they are fairly expensive (new ~$90) and in my area junk yards have processed vehicles that are that old into scrap to be shipped to Japan and made into econoboxes or they are blobs of rust in a field. Also it would require a couple of lines - a vacuum line to operate the canister and a line to the PCV or vacuum connection in the intake manifold - in other words, a sloppy mess of hoses. Do I need to vent the cap? I wouldn't think so. But....

I'm in the process of trying something I made up using an activated charcoal filter (a Brita water filter). So far, the results haven't been successful, but I forgot to water soak the filter to activate it to work. It's been soaked and on the vent now, but my guess - it ain't gonna do it!!

With that said, others must have had excessive gas fumes from their gas tank vents and on street rods. How were those fumes handled? Why this car when others didn't have that problem? And before you ask, there is only about a half tank of gas.

HELP