Gas Caps

[Hawker7]

Are the gas caps from 70 different from 72? I took the emission stuff off my 72, so I needed a vented cap. I bought one for a 70 as it is vented but it is to big and dosn't fit the tank. What vented cap do I need?

[Sport/Truck]

What did you do with the line that went to the evap can? I'm thinking if you left it hooked that would be your vent.
s/t

[Hawker7]

I took everything off, and sealed up the tank. I thought I read before about people doing this, I just don't remeber what cap they used.

[Sport/Truck]

Originally Posted by Hawker7

I took everything off, and sealed up the tank. I thought I read before about people doing this, I just don't remeber what cap they used.

I'd say if it's all sealed up then you need a vented cap.
s/t

[Hawker7]

Anyone know what Chrome vented cap will fit my 72???

[Hawker7]

Anyone???

[Hawker7]

Am I the only one that has taken the emissions off a 72 and needed a vented cap????

[ZombieWeinerDog]

Originally Posted by Hawker7

Am I the only one that has taken the emissions off a 72 and needed a vented cap????

i took my original breather for the emissions control, but on the tank (new from LMC), it has a kind of return line, it also a has a return line from the carb. im using a locking gas cap

[Sport/Truck]

Originally Posted by ZombieWeinerDog

i took my original breather for the emissions control, but on the tank (new from LMC), it has a kind of return line, it also a has a return line from the carb. im using a locking gas cap

I'm not picturing what you have. Do you have pictures of your set up?
s/t

[Tom Vogel]

Youre telling us there is no vent bung on your tank? If there is a vent bung on your tank, then run a rubber hose through your cab floor and put a breather on it.

[red71c10]

Stant 2378 is vented and fits the stock '71-'72 filler neck.

[leddzepp]

Take your non-vented cap down to autozone and match it up to one that is vented.

[Hawker7]

Originally Posted by red71c10

Stant 2378 is vented and fits the stock '71-'72 filler neck.

That is what I was looking for. Thanks

[Hawker7]

Originally Posted by Tom Vogel

Youre telling us there is no vent bung on your tank? If there is a vent bung on your tank, then run a rubber hose through your cab floor and put a breather on it.

I had taken that off, but I still have it. Do you have that setup? Any pictures? What breather would I get?

[Sport/Truck]

Hwak Do you have the charcoal system parts? I'm thinking you can just leave the tank vend connected to the charcoal canister for a vent.
If you don't you could run a small pice of hose from the end of that metal line, and mount a filter under your frame.
s/t

[Tom Vogel]

Originally Posted by Hawker7

I had taken that off, but I still have it. Do you have that setup? Any pictures? What breather would I get?

I have a 2wd Jimmy. It is a 72 which had the same smog equipment. When I read your post yesterday I looked at the old tank (Ive replaced it with a purpose built stainless tank, which by the way has an 8an vent). The old tank has two 3/8" bungs for smog return vents. I figured your tank would at least have one vent since it is a later year as well.
Just take a peice of rubber hose that is the right size and slip it over the bung on your tank and secure it with a small hose clamp; run the hose down the side of the tank and through the hole (that you will drill) in the bottom of your cab. Put any kind of breather (one that will slip into the hose end) on the hose that will keep insects or debris out of the hose. Your auto supply can help you with finding that.
My Jimmy has to have a large vent to allow for the huge fuel delivery it requires, so the new tank incorporates that large 8an vent. Im running an Earls flex line with a small valve cover vent. You wont need any thing that big.

[Hawker7]

I have the canister but don't really want to put it back on. I think I will try the vented cap that was mentioned, and if I don't like that, I will run the line as described. Thanks for the help. David