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Wed Feb 02, 2011 2:55 pm

Hey guys quick question here. I am gonna try to stop by autozone and pick up some fuel line for my 71 sb on my way home from work. Only problem is, I don't know what size it is for sure. If I go home first and measure, they will be closed by the time I get there and I wont be able to work on it tonight and will have to wait till tomorrow. If you all could help me, I would really appreciate it. I am sure it would be the normal factory size since there hasnt been much done to this vehicle in the way of upgrading.

Wed Feb 02, 2011 2:56 pm

The correct fuel hose is metric 5mm and autozone will try to sell you 1/4" which is too large.

Wed Feb 02, 2011 3:03 pm

Airhead sells these clamps for the 5mm hose...they dont distort and have a wide clamping surface.

Wed Feb 02, 2011 3:05 pm

McMaster sells both these styles.

Wed Feb 02, 2011 3:16 pm

the local auto parts store probably does as well, they are just fuel injection clamps...

Wed Feb 02, 2011 3:21 pm

Reed99 wrote: Hey guys quick question here. I am gonna try to stop by autozone and pick up some fuel line for my 71 sb on my way home from work. Only problem is, I don't know what size it is for sure. If I go home first and measure, they will be closed by the time I get there and I wont be able to work on it tonight and will have to wait till tomorrow. If you all could help me, I would really appreciate it. I am sure it would be the normal factory size since there hasnt been much done to this vehicle in the way of upgrading.
you need 5 mm hose. autozone will not have it.

Wed Feb 02, 2011 4:28 pm

NAPA stocks it. Picked some up today. Gates brand, a little pricey, but worth it. (They have the 5.5mm & 7.9mm).

Wed Feb 02, 2011 4:44 pm

any advance auto has it as well...

Wed Feb 02, 2011 4:50 pm

Damn, my dad had picked up a new fuel filter for me as a surprise. He did'nt ask me before hand he just wanted to do something nice and the guys at autozone had given him a 1/4" filter. I had not tried it to see if it fit yet, but thought it might. My jbugs catalog has them in there and only offer 1/4" and 5/16" so I thought there was a good chance it was 1/4". Oh well I guess I will stop by just to see if they have it since it is on the way home.

Wed Feb 02, 2011 4:50 pm

Hellaslow wrote: any advance auto has it as well...

oh good. there is an advanced auto on the way as well. I will stop by there first.

Wed Feb 02, 2011 5:11 pm

JSW65 wrote: NAPA stocks it. Picked some up today. Gates brand, a little pricey, but worth it. (They have the 5.5mm & 7.9mm).

So is it 5mm or 5.5mm that I need? Also, if this makes a difference or not I dont know, I only need the line to relocate my fuel filter. It was in the line right before my carb and everybody here told me to move it to before my fuel pump. So I just need to run a line going from filter to pump and from pump to carb. Like I said, I don't know if that makes a difference or not.

Wed Feb 02, 2011 5:51 pm

5.5mm equals 0.216535

One quarter equals .25

Therefore 1/4 would be to large
double clamp it and check it carefully

Thu Feb 03, 2011 9:01 am

JSW55 has it right the fuel line sold by autozone / krak / leprechaun oreilly etc .
Get's stiff after 2 month's .
Napa preferd Gate's line stay;s soft and malleable .
Sean

Thu Feb 03, 2011 9:05 am

JerryMCarter1 wrote: 5.5mm equals 0.216535

One quarter equals .25

Therefore 1/4 would be to large
double clamp it and check it carefully

You can use 13/64", which is the closest.

Thu Feb 03, 2011 9:13 am

BattleGeek wrote: JerryMCarter1 wrote: 5.5mm equals 0.216535

One quarter equals .25

Therefore 1/4 would be to large
double clamp it and check it carefully

You can use 13/64", which is the closest.
i prefer 25/128". ask the autozone guy for 25/128" hose.

Thu Feb 03, 2011 9:29 am

torsionbar wrote: i prefer 25/128". ask the autozone guy for 25/128" hose.

Wow. They have that? I had to actually use 1/4" and double clamp it like Jerry said.

Thu Feb 03, 2011 9:29 am

1/4 works fine for me, no leaks or slipping. Double clamp it for safety,

Thu Feb 03, 2011 9:44 am

Lakrum wrote: 1/4 works fine for me, no leaks or slipping. Double clamp it for safety,

Not good.

Thu Feb 03, 2011 9:48 am

69 Jim wrote: Lakrum wrote: 1/4 works fine for me, no leaks or slipping. Double clamp it for safety,

Not good.

Please read my topic before trying to bash me. That was there while i was doing work on the engine. It is no longer there and has been relocated to underneath the fuel tank. Thank the PO for it being there.

Thu Feb 03, 2011 9:53 am

Lakrum wrote: 69 Jim wrote: Lakrum wrote: 1/4 works fine for me, no leaks or slipping. Double clamp it for safety,

Not good.

Please read my topic before trying to bash me. That was there while i was doing work on the engine. It is no longer there and has been relocated to underneath the fuel tank. Thank the PO for it being there.

Cool. Double clamping oversize fuel line is not a great tip to pass on. :roll: