Came across this and thought I would share. I'm sure some of you could use it. I am trying to find the best fuel cell to go in my trunk. no filler door anymore and want to keep it in the trunk for when the car is lowered. Anyone want to share pics/discription of what they did? I'm running a 235ci with the man. pump. Thanks!
I'm getting ready to re-run my fuel cell vent and that diagram makes sense. I'll try to run mine differently this time. The main reason I'm re-doing mine is that when my car is stored, evaporating fuel causes a fuel odor in the garage. My simple fix is going to be installing a shut off in the vent. Remembering to connect the battery and open the vent shouldn't be a big deal when the car is driven.
I see flaws with all those diagrams personally. My vent lines always include a loop to keep any liquid sloshing from exiting the vent lines. My current rod is vented out the top of my fuel cell and a single loop in the line, then down through the trunk pan and a cheap universal fuel filter on the end to keep bugs and such from entering the line. It also solves the gas smell problem.
You want the end of the vent hose as high as you can get it. Up above the rear axle or maybe even higher if possible. I'd put some sort of breather/filter on it too if possible and maybe a shield over that to keep mud and what not off it. I've been thinking seriously about putting a charcoal canister off a late model something or other up front on or around the core support and running a line back to the tank. Some car or other is bound to have a small canister that can be hidden out of sight.
Mine has a breather filter and it doesn't help the smell. I've read many stories about fuel cell venting and some feel that looping the vent allows the loop to hold fuel which restricts venting.
Exactly, as used on Sprint Cars, midgets, and most other race cars, readily available, cheap insurance
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