I need fuel line HELP!!!!!!!
Thread Starter
Intermediate
Joined: Mar 2009
Posts: 44
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I need fuel line HELP!!!!!!!
Ok ive been told not to rerout the fuel lines on my 79, and that i should probably just buy prebents. BUT ive always been one to be hard headed and learn the hard way
. what i need HELP with is there are three lines coming off of my tank, two to the passenger side and one to the driver. where do they go and what do they do. i know this q seems silly but im at work and am tryin to prep to start this project this afternoon. i already have alu line and fittings. what is the purpose of multi lines, could just one or two be run? i know all you corvette guru's will help so THANX in advance
Chase
. what i need HELP with is there are three lines coming off of my tank, two to the passenger side and one to the driver. where do they go and what do they do. i know this q seems silly but im at work and am tryin to prep to start this project this afternoon. i already have alu line and fittings. what is the purpose of multi lines, could just one or two be run? i know all you corvette guru's will help so THANX in advanceChase
Safety Car
Joined: Aug 2001
Posts: 3,685
Likes: 202
From: Waterford Mi
On the right side you have two lines, one is the fuel supply line going to the pump. the other is the fuel return line from the pump back to the tank. On the left side you have one line that goes to the carbon canister up under the fender just behind the front tire.
all three are hard to change out with the body on the frame because of how they are attached to the top of the frame and you can't get to them where they travel up the frame behind the seat.
Here is a picture of the lines on my 73.
You can fish the new lines in but you will have troble getting the old ones out. The body does not have to come all the way off but it would be easier if you can lift it a few inches. Now would be a good time to check the body mounts while you are in there.
Good luck.
all three are hard to change out with the body on the frame because of how they are attached to the top of the frame and you can't get to them where they travel up the frame behind the seat.
Here is a picture of the lines on my 73.
You can fish the new lines in but you will have troble getting the old ones out. The body does not have to come all the way off but it would be easier if you can lift it a few inches. Now would be a good time to check the body mounts while you are in there.
Good luck.
Thread Starter
Intermediate
Joined: Mar 2009
Posts: 44
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im swapping to an electric fuel pump and im most certain no return line so thats one down. whats the purpose of the carbon canister? is it really nessesary. i have the utmost respect for all you guys that have these AWSOME stock look setups, but my goal is a straight street beast that only looks stock on the outside. so if its not necessary im tryin to drop it. the less clutter and wieght the better ( i mean no offence by saying "clutter" like i said i hope to restore a 73 one day to stock form for shows, but thats not the goal of this car) THANX for all the help the pic really helped me get an idea of where it is and what ill be lookin at.
Burning Brakes
Joined: May 2006
Posts: 774
Likes: 1
From: Round Rock Texas
I just removed mine. It didn't have any line connected to it so I never saw any real use for it. I installed a vacuum reserve canister in its place. Fit perfectly. As far as fuel lines...I would just run braided fuel line from the tank/elec fuel pump. Looks better too.
That's just me though.
That's just me though.
Thread Starter
Intermediate
Joined: Mar 2009
Posts: 44
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well thats what im thinking, im most certain it had a purpose on a stock car i just cant see why i need it, 
. as fas as the fuel line im goin with aluminum cause its cheaper and easier, thanx for the post.
. as fas as the fuel line im goin with aluminum cause its cheaper and easier, thanx for the post.
Advanced
Joined: Apr 2007
Posts: 68
Likes: 0
From: Annapolis Maryland
Agree...pulled my canister and put the mounting bolts back on with a nut on the compartment side to seal up the wheel well. Marz, you said that you put in a vac reserve tank...under the regular vac tank? how does this work into the system...any other amplifying info??
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Burning Brakes
Joined: May 2006
Posts: 774
Likes: 1
From: Round Rock Texas
I removed the canister and installed the vacuum reserve canister in the exact same spot with the existing bracket. I then routed hose to the vacuum line on the intake and cut and pieced the rest of the hoses together with connecters. I needed it for the cam I installed. I had very little vacuum for my brakes. It was a Crane vacuum canister.
Safety Car
Joined: Aug 2001
Posts: 3,685
Likes: 202
From: Waterford Mi
Be advised that the canister is also there to vent the tank so if you just plug the line you will have issues. Before the canister was put on cars they had a vented gas cap. you can find them for earlier Vettes and see if they will work on you tank.
Pro
Joined: Jul 2005
Posts: 517
Likes: 7
From: Peoria IL
I've been speculating/reverse engineering the charcoal cannister and have a hypothesis about what it's for and how it works.
Fuel tank fumes and fuel fumes from the float bowls are plumbed to the top of the can. I think the can just acts as a filter just like respirators use that allows the float bowl and tank to breathe but the fuel vapors can't pass through the charcoal so there would be no fuel fumes in an enclosed space (like a garage).
Just a hypothesis, I could be wrong.
Fuel tank fumes and fuel fumes from the float bowls are plumbed to the top of the can. I think the can just acts as a filter just like respirators use that allows the float bowl and tank to breathe but the fuel vapors can't pass through the charcoal so there would be no fuel fumes in an enclosed space (like a garage).
Just a hypothesis, I could be wrong.
Thread Starter
Intermediate
Joined: Mar 2009
Posts: 44
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Thanx again for all the post. i actually intend on removing the canister and still venting the tank. im just gonna use a gromet a brass conector, and some line to make a vent probably gonna use a small valve cover breather or somethin.
