Gas Tank Switching Valve

[Guest]

I have one of the rare original gas tank switching valves that I think was only offered in 73. The one with vent hoses coming off of it. It started leaking a little so I bought a replacement one but it only has (I think) three nipples coming off of it. The shop just said bypass all of those vent hoses because they are not necessary however I am not sure. No One seems to have the exact valve anyway. One person said that by bypassing them, it could possibly catch fire. Not sure what to do or if I should just try a new o ring or packing to stop the old one from leaking. Any ideas ? It will be coming out of the body/paint shop real soon and I want it to be okay.

 

[americanhorses]

a simple fix that has worked for me, Mount your standard (3-nipple) switch, Tie your 3 vent lines together with a 3-way tee

 

[Guest]

Have you had any problems with it this way ? I am just curious because now I believe that the gas tanks would no longer be vented and I was worried about vapor lock or worse..............one guy recently told me that it could catch fire and I definetely do not want that.<br><br>Thanks again American Horse !

 

[americanhorses]

I have'nt had any problems yet. Both tanks would be vented to the liquid/vapor canister at the same time.

 

[Rustytruck]

Unscrew the cap off the old valve and put in a new O-ring if it doesnt work for you what have you lost? you either salvage it or junk it. I dont have a 73 but have 2 74's with the newer valve style and I will assume the difference is the 74 and laters are the use of the fluid/vapor seperator tank behind the drivers seat and the 73 doesnt have it so if it isnt vented properly and just tee'ed together you could transfer fuel from a full tank to another full tank and over flow the filler neck and spill fuel thus causing a fire hazzard. I have seen Bronco tanks spill fuel when parked all by themselves in the hot sun due to venting problems. Just make sure the vents from both tanks go up to a Tee and then the line from the tee goes up and then loops over and down to the charcoal can. all of the tees and loops should be placed so all of the loops and tee'es are above the tanks and floid can run back down to the tanks and not siphon down the vent line.

 

[chuck]

Why not go with the electric 6 port valve?

 

[thesnake]

I bypassed the vents on my 73. If I had it to do over now, I'd go with the electric 6 port.<br><br>snake

 

[Guest]

Is their much to installing the electric six port valves and where can you find them ?

 

[lpsolo]

Chuck has them at www.bcbroncos.com

 

[swood]

My 72' has the forementioned vent tank behind the driver's seat. Hmm?<br><br>I've read that you can simply cap off the vent lines from the tanks and rely simply on the vent line running up the filler neck, provided you install venting gas caps. Much simpler setup, but I have not tried this yet. Just read about it.