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rotten fuel hose rant

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Old Feb 15, 2015 | 09:44 AM
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Default rotten fuel hose rant

I'm doing a complete nut and bolt rebuild on a 72. It's been about a 5 year project so far and I'm edging up on driveability. I've replaced, replated, repainted, restored just about everything on the car. Now I'm replacing NEW parts. Tried starting and had a huge fuel leak from the front end. Got underneath and those brand spanking new when I put them on fuel "S" hoses from the frame to the pump are rotten and cracked. GRRLAKEGRKJADFSVBA;KJSFDGUPAJNVNKL!!!!!! ! Off to Oreilly today for some new Gates fuel hose.

Bill
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Old Feb 15, 2015 | 09:53 AM
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Hi Bill,
Mine cracked too!!!
I'll bet we'd be told that when the hose is heated to form it into the 'S' the heat changes the "molecular structure" of the rubber and there's nothing to be done about it.
I think you'll find that the regular hose won't work because you'll have a fuel starvation problem….. the bend you have put in the straight hose closes down it's inside diameter.
They pretty much have us where they want us.
Regards,
Alan
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Old Feb 15, 2015 | 10:08 AM
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I was going to try an extra long hose hoping that I could get a gentle curve without being in the way of everything else. If not then I'll call one of our trust worthy vendors and get some new "s" hoses.

Bill
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Old Feb 15, 2015 | 10:17 AM
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I have also seen the hoses degrade. I think it is a combination of the modern fuel with the cheap materials in the hose. I also try to use the best hose available.
Years ago, back when I had the SBC, I shortened the metal lines and that allowed me to re-route the supply and return lines so that I could use "regular" hose. I never had any problems. If I had to do it today, I would probably make up some new metal lines, as I hate to rely on such specialized parts for such a simple need.
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Old Feb 15, 2015 | 10:57 AM
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Use pure gasoline.

Carter
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Old Feb 15, 2015 | 11:02 AM
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Mine have cracked as well. Only 2 years old. For a solution using quality fuel line try the Gates Unincoil. A member here used them recently and had success. It's lilkely how I'll fix mine.

http://www.gatesunitta.com/unicoil-hose-bending-system
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Old Feb 15, 2015 | 11:13 AM
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Originally Posted by 71scgc
Use pure gasoline.

Carter
Mine have never seen anything but pure gasoline. Pump gas that is. It's not related to ethanol use.
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Old Feb 15, 2015 | 12:17 PM
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Originally Posted by texaswilkins
I was going to try an extra long hose hoping that I could get a gentle curve without being in the way of everything else. If not then I'll call one of our trust worthy vendors and get some new "s" hoses.

Bill
That's exactly what I did on my 72. I used good quality fuel hose and cut it long enough that the curves did not kink. Works fine. Who cares about original if it is going to let you down along the road.
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Old Feb 15, 2015 | 12:43 PM
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Bill, just replaced my 3/8 inlet rubber hose from steel fuel line from tank to fuel pump. About 15 inches long. It was about 12.5" before and it was slightly kinking, which put a bind on the 90 degree elbow A/N connector at the fuel pump. Engine side to side torque slowly loosened the AN fitting. No rotting hose, but the Holley tech did re-iterate that all fuel line hose, especially steel braided are NOT made equal. They usually will leak sooner than later pending the quality.
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