Poly Armour pressure testing.

[maskale]

I needed new hard lines front and back, also wanted to replace the hard lines for my dual tanks and extend them to my rear blazer tank.

Thats when I searched for them here and found out about Poly Armour. It can be used for just about anything on ur truck.

While searching here I also found that most seem hesitant to make their own lines, not trusting themselves to properly flair them.

So here we are, Im going to replace all my lines using stuff that any of us can get from ur local auto parts.

A 25' roll of tubing cost between 20-25$, the tools can be borrowed from ur auto store, in my case I got everything from Autozone. Fittings come in around a buck a piece if u buy in packs of 5.

So for around 100, I got 3/16, 1/4, and 3/8" 25' rolls of tubing and all the fittings I will need.

I dont mind buying tools, I buy them for life and use them regularly, so spending 300 for a pro flaring tool was not out of the question, but I wanted to try out what anyone of us can get easily from our local store. Hopefully this will help u guys over come some reservations about making ur own lines.

I have never made my own brake lines. I bought the stuff, made a few flairs and started testing. I believe this first test is the 3rd flair I made.

The fair tool, it really is a cheapy, cost around 20 if u bought it yourself, I think they charged me 30 to loan it to me.

The bender they have, the "heavy duty" one, is really a cheapy also. You can bend by hand but if u really want nice bends the bender even from autozone will do it for you.

So on with the pics.


Here is the part number












Here is the flair, on 1/4" tube. All test were on 1/4" tube.




Pressed up to 1500





Now here I figured this would be enough after letting it set for several minutes and no leaks. But I know some will say that aint enough safety margin. I did search the net and found brake systems run from 600 to 2000 just depends on application. I was also curious if it would hold more.



So I went higher.





A few more min and no leaks. Now I know its hard to see, but I do have a small peice of Poly Armour there, its green, above that is a 7/16 nut screwed into a union and capped by a plug.









Well time to make another flair and run another test, check my repeatability.










I was just using Parker fittings to hook up to the test rig.







Fill the line





And here ya go, this is beyond the working pressure of the hard line. It held with no leaks. Follow the SS braid line and u can see the Poly Armour in the back ground.

[lolife99]

Great info.

[texastrendz]

Shut the front door, too cool.

[k1rodeoboater]

I had better luck bending my fuel line by hand than I did with the tubing bender. The parts I bent by hand look a lot nicer for whatever reason

[m6z]

cool. good to know. thanks for taking the time to test it.

[SBTork]

Great info!! Another really cool thing about the poly armour lines is that they are very hard to kink, meaning they bend by hand very easy. I just replaced one trans cooler line on my suburban last night and plan to replace the other one tonight with the poly armour line. I had very good luck with doing it and even got lucky with the length and did not need to cut or flare.

[ItsRandy]

Wow...nice shop you got there, tile floor, mini fridge and high end testing equipment. Whatcha got in those file cabinets? Dancing girls?

[Rooster's 67]

Now lets go ahead and run that up to a "Burst pressure'. Good info to know if your rig will run that high a pressure. If you do choose to do that please think of safety first. I really do wonder what the Burst pressure of the line is.

[maskale]

Here is more info, including ur burst pressure.

http://www.agscompany.com/faq/10

[In The Ten Ring]

WOW! So what you are saying here is, "polyarmour fuel line is perfectly safe to use on our trucks?"

I just discovered this material and I want to use it on my 1972 to replace the entire fuel line. I'd like to just use rubber hose connections....is it OK to do that with this [polyarmour] material?

[maskale]

Yes you can use it for any fluids on any truck. If your fuel injected though you may have to come up with a way to attach your fuel hose. You could use some parker fittings with ferules. They wont be DOT, but it will hold any amount of pressure you could give it.

If just running a low pressure car then just slip an inch of rubber hose over the PA and use a hose clamp.

[Snailed]

There are tons of clamped barb fitting/rubber hose connections in older OEM fuel injection setups. You just need to form a bead on the hardline and it's good for 100psi or so with the proper EFI hose and clamp.

[INSIDIOUS '86]

I'm curious here. So what is poly armor and how does it differ from normal brake line?
I myself don't like the idea of stainless since its more brittle than steel lines and harder to flare and bend

[cory d]

AGS Company - Poly-Armour Brake Line Comparison -...