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but I am thinking of going stainless myself. Tim

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Hardline or braided? I know many say they never had any problems with alum, but compared to SS hardline, how much weight savings is there, a pound? I just can't wrap my mind around how much fuel exits a torn alum line under pressure at speed, and I doubt surviveable without a lot of damage/injury, all for a pound?

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I'd never use aluminum; only advantages are weight and ease of forming and the weight is negligeable and mild steel isn't hard to form. disadvantages are aluminum is brittle and prone to stress cracks.....not something I'd want for a fuel line. Steel or SS



Dave

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Exactly.
With todays gas, there will be problems with aluminum lines sooner than later too.
For a street car it's much more dangerous than a race car.

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but I am thinking of going stainless myself. Tim

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Hardline or braided? I know many say they never had any problems with alum, but compared to SS hardline, how much weight savings is there, a pound? I just can't wrap my mind around how much fuel exits a torn alum line under pressure at speed, and I doubt surviveable without a lot of damage/injury, all for a pound?

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I'd never use aluminum; only advantages are weight and ease of forming and the weight is negligeable and mild steel isn't hard to form. disadvantages are aluminum is brittle and prone to stress cracks.....not something I'd want for a fuel line. Steel or SS



Dave

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Exactly.
With todays gas, there will be problems with aluminum lines sooner than later too.
For a street car it's much more dangerous than a race car.

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If your aluminum is cracking, you are using the wrong aluminum or its installed wrong. You DO NOT double flare aluminum, you need specific radius bends for each specific line, Aircraft vibrate much more than most race cars, they have been using it for decades and no issues when done correctly. Tim

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I'd never use aluminum; only advantages are weight and ease of forming and the weight is negligeable and mild steel isn't hard to form. disadvantages are aluminum is brittle and prone to stress cracks.....not something I'd want for a fuel line. Steel or SS



Dave

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Exactly.
With todays gas, there will be problems with aluminum lines sooner than later too.
For a street car it's much more dangerous than a race car.

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I am not sure it correct to compare an airplane to a car. No fuel corrosion issues, not sure hitting a pot hole/curb is the same as being buffeted, little road debris at 5,000 ft, most lines in a plane are enclosed, and weight is a bigger issue aloft, routine inspections are required in aircraft but cars are more install and worry about when there is problem, and not much reason to worry about a fender bender in the air. However the concept of properly installing a fuel line likely is valid for both.

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The aluminum line I used was from Summit Racing. 37-degree single flair with AN Fittings and the AN tube sleves/nuts. It was fine for about five years, then got one crack near the flare at a bulkhead fitting at the engine compartment. May have been some flexing from the body that caused the problem?
I may have needed a strain relied bend in the line to account for some body flexing?

In 3/8" I like the reproduction lines in stainless steel. Factory fit and look, and compatable with any fuel.

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