Poly Armour pressure testing.

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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.