Fuel Line Question
Thread Starter
Burning Brakes
Joined: Aug 2006
Posts: 1,058
Likes: 27
From: Eastern North Carolina
Fuel Line Question
Hello,
Is anyone using regular rubber fuel lines for the transition from the metal lines from the tank to the fuel pump? Or should the preformed hoses always be used?
Thanks Tim
Is anyone using regular rubber fuel lines for the transition from the metal lines from the tank to the fuel pump? Or should the preformed hoses always be used?
Thanks Tim
Racer
Joined: Sep 2007
Posts: 253
Likes: 0
From: Pearlington Mississippi
Just my .02 cents...I used all steel lines.The onlu place I used rubber lines is the transition
from the rear line to tank.But then I took lars advise.He has a good write up on forming your own.
from the rear line to tank.But then I took lars advise.He has a good write up on forming your own.
Le Mans Master
Joined: Oct 2002
Posts: 7,098
Likes: 378
From: Las Vegas - Just stop perpetuating myths please.
Don't let your hose get kinked.
On my '74 only one is preformed - has S shape. But u can make hard line extensions onto the fuel pump (then add straight flex hose to make the connection to hard lines to tank) if needed and craft your own routing. My carter fuel pump had different inlet/outlet fitting locations than stock.
Just stay away from heat (exhaust pipes) and don't let the hose kink.
cardo0
Just stay away from heat (exhaust pipes) and don't let the hose kink.cardo0
Last edited by cardo0; Feb 14, 2011 at 10:37 PM. Reason: clarify extentions
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
The problem with that particular hose is that it has two sharp bends. With 'regular' fuel line, it will kink-up and close off the fuel flow. That's why you can get that one "pre-formed" and, thus, it costs more than stock hose.
If you can find some good quality hose that will not close-off when making those tight bends, go for it. If not, buy the ready-made one.
Using synthetic rubber fuel line in transition before the fuel pump is fine. Installing it down-stream of the fuel pump is what is risky. Before the pump is merely "gravity feed"...no real pressure on the fuel. After the pump, the fuel is pressurized, and if the hose breaks it sprays fuel all over the headers and a hot engine compartment. Not a good idea....
If you can find some good quality hose that will not close-off when making those tight bends, go for it. If not, buy the ready-made one.
Using synthetic rubber fuel line in transition before the fuel pump is fine. Installing it down-stream of the fuel pump is what is risky. Before the pump is merely "gravity feed"...no real pressure on the fuel. After the pump, the fuel is pressurized, and if the hose breaks it sprays fuel all over the headers and a hot engine compartment. Not a good idea....
Burning Brakes
Joined: Oct 2003
Posts: 1,090
Likes: 74
From: New Carlisle IN
I've use rubber lines on my 73 for years with no major issues because of them. I did however replace all of them a couple of years ago because i saw one was starting to dry rot. I did have a small fire under the car right before this, but that was actually from the metal line on the frame which developed a hole. Sprayed right onto the hooker headers. I was coming in from an autocross run and somebody said they saw fire. I shut off the motor, grabbed the extinguisher and opened the hood, but the fire was already out.
I hvae rubber from the tank to steel line on frame, from frame line to pump, and from pump to carb with an inline filter. I didn't use a preformed line from the frame to the pump. I do have a Holley pump and you can move the inlet and out let to a more suitable position. I also have a section of hose in place of where the steel line had the hole. If i ever do a body off, i will replace that line. They have lines rated for fuel injection if you are worried about pressure, but our manual pumps really don't produce that much pressure.
I hvae rubber from the tank to steel line on frame, from frame line to pump, and from pump to carb with an inline filter. I didn't use a preformed line from the frame to the pump. I do have a Holley pump and you can move the inlet and out let to a more suitable position. I also have a section of hose in place of where the steel line had the hole. If i ever do a body off, i will replace that line. They have lines rated for fuel injection if you are worried about pressure, but our manual pumps really don't produce that much pressure.
Melting Slicks
Joined: May 2009
Posts: 3,079
Likes: 315
2024 C3 of the Year Finalist - Unmodified
I used a high quality rubber hose from the frame to the pump inlet. I don't see any kinks, but then again...I am experiencing what I believe to be fuel starvation under hard acceleration. Thinking seriously about using a pre-formed "S" shaped hose there.
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