Blazer tank vent

[MNorby]

I just put in a new poly tank in my 71 k5 and am in the middle of plumbing everything in. I removed all the old nasty lines that went around the back of the frame to that vent deal inside the cab and basicall have my feed and return line on the pass side and my fill and fill vent line on the drivers side. I am thinking I need a basic tank vent though so the tank doesn't colapse or expand. Doesn't look like the cap is a vented gas cap. There is an extra port on the poly tank I could run a vent somewhere and I still have that tube in my cab for the original vent could I just run a line from that extra port to that in-cab vent deal? Deos this make sense to anyone? Thanks

[MNorby]

TTT
Anyone not running the stock managery of vent lines?

[vtblazer]

Think you'd be fine doing it that way.

The line tied in with the filler is for escaping air while the gas is going in.
Still need to have one for expansion/contraction either way.

[MNorby]

If I run that vent to those little ports that go into cab is it actually vented into the cab or just vent back down that tube to outside? Prob just cap off teh other 2 ports?

[vtblazer]

If you have the 'extra' vent on your tank, let the cluster alone IMO.

[MNorby]

i'd have to run a line somewhere though so fuel doesn't come out of the port on tank at angles.

[vtblazer]

Originally Posted by MNorby

i'd have to run a line somewhere though so fuel doesn't come out of the port on tank at angles.

That's what I mean, use your extra port for a vent line that could be run up and let the cluster of the old existing lines go unused.

[SOON2BLAZE]

Norby, hey whats up? Here a pic I saved of a vent (I think it was posted by john fabris ?) Thinking of using this ball check valve myself.

[MNorby]

the tip over valve would be nice in a vent, could gut the factory vent tube and run one a tip over vent up it

[vtblazer]

That's a good idea.