Hokay i gotta say i've never thought of using these hoses

[Wild one]

Some of his video's do make you think about alternate ways to do things.

Hardware Store Hot Rod Parts - Cheaper And Stronger Than The Real Thing

Plumbing the fuel system on a car can be a very expensive proposition, and because the commonly available braided steel automotive fuel lines are based on r...

www.youtube.com

 

[markabby]

hmmmm...not a bad idea, but water pressure is normally 45 to 55 lbs, so those hoses would work if you wanted to use one. I question whether a normal hose clamp would compress the stainless steel enough to hold a fitting. Maybe they would...just thinking out loud.

And they would look kinda cool in the engine compartment.

 

[Docwagon1776]

hmmmm...not a bad idea, but water pressure is normally 45 to 55 lbs, so those hoses would work if you wanted to use one. I question whether a normal hose clamp would compress the stainless steel enough to hold a fitting. Maybe they would...just thinking out loud.

And they would look kinda cool in the engine compartment.

Actual PTFE hose designed for automobiles uses AN connectors for that exact reason. The hose is stiff even without the mesh around it. The old "Hot Rod" magazine talked about it, IIRC, but it's been way too many years for me to remember all the details.

Personally, I wouldn't use something that wasn't known to be compatible with gasoline, the detergents in gasoline, and ethanol. Not all of the polymer liners are, and even if it says "PVC" that doesn't tell you which variety. Some are very impervious to gasoline. Some will turn to gum in short order.

 

[Wild one]

Actual PTFE hose designed for automobiles uses AN connectors for that exact reason. The hose is stiff even without the mesh around it. The old "Hot Rod" magazine talked about it, IIRC, but it's been way too many years for me to remember all the details.

Personally, I wouldn't use something that wasn't known to be compatible with gasoline, the detergents in gasoline, and ethanol. Not all of the polymer liners are, and even if it says "PVC" that doesn't tell you which variety. Some are very impervious to gasoline. Some will turn to gum in short order.

Most water hoses are set up to handle chlorine in water supplies. They'd make good hoses for a catch can set-up

 

[Docwagon1776]

Most water hoses are set up to handle chlorine in water supplies. They'd make good hoses for a catch can set-up

The "C" in PVC is for chloride, so chlorine is an ingredient in manufacturing it. That's not the same as being non-reactive to gasoline. Some PVCs are, some aren't. The flexible ones tend to be the "aren't" variety, but I don't know enough to say they all are or aren't. The gasoline will strip out chemicals from the PVC lining and it gets brittle quickly, even more so if in a hot environment.

Also look up permeation. Gasses can escape an improper material hose even if it's not cracked simply because it wicks through. You probably won't get a puddle leak, but you'll get vapor under the hood.

The rigid ones are better, or are at least ok'd for use in contaminated soil or ground water, but that also assumes ground temperatures. I, again, don't know enough to say if heat alters that or not.

It's one of those things that, to me, doesn't seem worth the bother of not just using a known good product. Fuel line isn't expensive, or at least it wasn't when I was bothering to do this sort of thing.

 

[Wild one]

The "C" in PVC is for chloride, so chlorine is an ingredient in manufacturing it. That's not the same as being non-reactive to gasoline. Some PVCs are, some aren't. The flexible ones tend to be the "aren't" variety, but I don't know enough to say they all are or aren't. The gasoline will strip out chemicals from the PVC lining and it gets brittle quickly, even more so if in a hot environment.

Also look up permeation. Gasses can escape an improper material hose even if it's not cracked simply because it wicks through. You probably won't get a puddle leak, but you'll get vapor under the hood.

The rigid ones are better, or are at least ok'd for use in contaminated soil or ground water, but that also assumes ground temperatures. I, again, don't know enough to say if heat alters that or not.

It's one of those things that, to me, doesn't seem worth the bother of not just using a known good product. Fuel line isn't expensive, or at least it wasn't when I was bothering to do this sort of thing.

Braided steel fuel line at least the good stuff isn't cheap if you're plumbing a complete system with it
I wasn't advocating using it as a substitute fuel line,i never even mentioned it,but i think it would make a good alternative for plumbing a catch can.You're the one hung up on using it as a high pressure fuel line,not me

 

[Docwagon1776]

Braided steel fuel line at least the good stuff isn't cheap if you're plumbing a complete system with it
I wasn't advocating using it as a substitute fuel line,i never even mentioned it,but i think it would make a good alternative for plumbing a catch can.You're the one hung up on using it as a high pressure fuel line,not me

Actually nobody is discussing using it as a high pressure fuel line.

However the guy in the video you posted is specifically talking about using it as a fuel line in carb'd applications. So, yeah, I'm discussing the potential cons of the advocated use *in the video you posted*...

 

[BenchTest]

Imagine building a car/truck and spending all that time/money to do so....then taking a guess at what the fuel line might or might not do.

 

[markabby]

maybe that damn ethanol would eat them up? I have like 30 of them in a bin. I should try one on a lawn mower and see if it holds up or not.....it'll be a summer project....too cold to play around now.

 

[Wild one]

maybe that damn ethanol would eat them up? I have like 30 of them in a bin. I should try one on a lawn mower and see if it holds up or not.....it'll be a summer project....too cold to play around now.

If gas and water hoses weren't as expensive as they are up here,Doc has me tempted to go buy one and toss it in a small Jerry Can full of gas.
There's a test you could do Doc,as things are a hell'va lot cheaper down south to experiment with

 

[Wild one]

I'm not sure what Mothers bottles are made of,but my homemade mix of half and half transmission fluid and acetone for penetrating fluid sits in an old bottle of Mothers Protectant with no issues.Been using the same bottle for at least a 1/2 dozen years.Makes me think the water hose idea might be okay.

 

[Docwagon1776]

If gas and water hoses weren't as expensive as they are up here,Doc has me tempted to go buy one and toss it in a small Jerry Can full of gas.
There's a test you could do Doc,as things are a hell'va lot cheaper down south to experiment with

I'll respectfully decline.

If you choose to do it, I'd recommend plugging one end, filling it, then plugging the other end. I'd do this way vs soaking/dunking for two reasons:

1) You don't actually care about the external rubber if the liner holds up to a dunking, so there's no need to potentially contaminate the results with swollen or damaged "external" rubber making it difficult to tell if the liner held or if the damage started on the outside

2) Soaking it will not tell you if permeation is occurring. If you just fill it like a tiny little Thermos then see if it smells like gasoline after awhile or wicked liquid to the outside, that's very valuable information.

#2 is actually my bigger concern with this. I started to in the weeds on this, but then realized I was reinventing the wheel. This explains permeation and why very similar rubbers may react really differently: https://www.hosemanufacture.com/blo...tance,subject to strict emissions regulations.

If you're doing improvised explosive initiators, permeation/wicking is one of the methods to do that. Uncle Sam taught me that you can build such things with common household chemicals where the liquid slowly leaks into the surrounding powder until the right ratio is hit and it spontaneously sets fire. (Also, most of them create toxic smoke, which can be a booby trap all it's own even if you're not touching off a larger charge)

The only thing you wouldn't account for with "tiny Thermos" testing is heat. I don't *think* that would be super significant for this sort of testing, though again with the caveat that I'm not claiming any real expertise here and could be missing something important.