vapor line

[cycomiko]

I'm going to remove my charcoal canister on my 80 Cutlass. Dropping in a new sending unit and I was thinking of running the vapor line up with filler neck, what kind of check valve do I use? Pics would be helpful. Should I make the whole line metal or keep rubber all the way up from filler neck to sending unit...any ideas/suggestions would be great. Thanks

 

[DoubleV]

I'm going to remove my charcoal canister on my 80 Cutlass.

Gotcha.

Dropping in a new sending unit and I was thinking of running the vapor line up with filler neck, what kind of check valve do I use? Pics would be helpful. Should I make the whole line metal or keep rubber all the way up from filler neck to sending unit...any ideas/suggestions would be great. Thanks

And now I'm lost.

If you're refering to wanting to keep the gas tank vented, you can just leave the stock vent line open with perhaps a little breather on the end so nothing gets in.

 

[cycomiko]

ok but im parking it in my garage and im worried about the vapors in there. Should I be?

 

[pontiacgp]

the vapor line is part of the emissions. Older carbs did not have the vent port on the carb and that can be plugged without any issues

 

[DoubleV]

ok but im parking it in my garage and im worried about the vapors in there. Should I be?

Personally test it out for yourself. Just disconnect the things needed ( without actually removing anything from the car ), plug anything that needs plugged, and see for yourself. If it seems fine for you, then completely remove all the things you don't need/want.

More people should use this method when it comes to removing things ( like smog crap ) that they think they may regret. For example years ago when my car was basicaly stock, I was considering removing the EFE/heat riser valve on the exhaust manifolds. Others told me I would suffer with longer warm up times which I know I would'nt want, so I just unplugged it and tested it for myself. I noticed no difference at all in warm up time. Now that I proved for sure everything would be OK, I then completely removed all the EFE crap.

 

[pontiacgp]

The EFE stands for Early Fuel Evaporation and it's purpose was to slow up the exhaust so the fuel would burn more completely when cold with the choke on....I could never realise why they only had that on one side tho..

 

[DoubleV]

The EFE stands for Early Fuel Evaporation and it's purpose was to slow up the exhaust so the fuel would burn more completely when cold with the choke on....I could never realise why they only had that on one side tho..

Because if it had it on both sides, the exhaust would have no place to go! The way they did it was basicaly stop the exhaust from flowing in one manifold, all that hot exhaust would then back up and run through the heat crossover in the head, go under the intake manifold ( heating up the carb ), go through the heat crossover of the other head and out that sides exhaust manifold.

I could only imagine how horrible the performance would be if the EFE valve got stuck in the closed position. Yikes.