Modifying Hardlines on drivers side engine bay

Thanks Jason! Always wondered exactly what that thing was that I ripped out and tossed LOL. Again as I have said before - not much use on our trucks

Yeah thats my thoughts when I had to get my braided lines made for my frontend only one place could make them because as soon as the second crimp was made they had to be tested to 4000 psi per DOT rules.

the compression fittings are sold in the brake line section at autozone. i dont see the big issue in it and im sure it will turn into pages of why i shouldnt have done them. i first used them to mock up the lines so i can get a length so i could bend some new lines. they work fine so ill use them till i take it apart again this summer and repaint some under the hood and paint the outside of the truck. heres a pic of what i did

Im sure they are sold there because it is where the line type stuff is sold and it is bunched together, the line can be used for all types of stuff like vacuum lines and fuel stuff that isnt super high pressure. Im glad they have worked for you and like them for fitting so you can make new ones but its not a good idea to run the presure of a brake system through them., Not trying to flame you but want every one else to know that they are not ment for brake lines.

The part in red is the only part that gets me, brake lines are designed so they can not pull apart from use, but a compression fitting can. and probably at the worst time when you slam on your brakes to avoid hiting something or someone. not saying it "will" but it could. I would rather see a halfassed weld then something like this

I have said my part and I will leave it at that and you can go back and read my other posts i dont realy get on people about what they do but I feel pretty strong about this one.

I will chime in just briefly regarding the compression fittings. I used to be an industrial paint and chemical tech for a steel tube mill. We dealt with some serious pressure, heat, and nasty as paint. We used compression fittings and stainless steel tubing all the time. If they are the correct ( similar to those) it will work. You will just want to make sure that due to the vibration they don't loosen and leak. If you pump the brakes similar to the way you would when bleeding the brakes you will be able to see a leak QUICK. Again I have not used it in a brake set up but definitely under a high pressure high heat situation.

Good luck to all on this...oh Jason your truck looks flippin sick as hell man. Really like it.

If you go to a hydraulic shop you can get steel compression fittings that are engineered for high pressure hydraulic applications.
Your brass fittings will probably do the job, but they'll NEVER pass a DOT inspection!

Its cool Jason I'm not mad at all. I completely see where you are coming from. You're just looking out for my safety and the safety of others. People don't know everything or are sometimes missinformed and it takes a an outside point of view person to point it out so that the right knowledge can be spread. I had not thought about the down side till you pointed it out and It makes sense. The fittings are at work with the lines and are made by the same company as the lines. They may work fine or maybe just for a quick fix. Ill look more into It while the truck is down now (heads off...again lol) and go from there. Thanks again for telling me in a nice way and not talking shit. We grown folks right....lol

The compression fittings you guys are talking about are designed for certin apps and yes they do make high pressure ones ment to be used with certian lines. but what happens when they fail for the most part a mess but not having a brake failure, and not sure how many other people have but I know I dont have an a emergency brake anymore (mainly cuz of the irs). the ones mikey has may be made just for the brake lines as a temp repair or such. And he may never have a problem with them. But I have never seen a factory brake system come with them, and maybe its just because its so improtant not to have a failure that they dont want to chance it. And I know a lot of stuff we do to our trucks isnt how the factory designed it and some stuff can be unsafe and theres tons of things that can happen.

Compression fittings work good for lots of stuff but there is deffintly a better way, although not easier. I even used the same line for all of my airline on my truck and spent the time to put the double flares on them but I have the tools for it. Not sure if the parts places rent the tools or loan them but i found a couple good tips on line to get a nice flare on the lines.


I guess I just want other people not to run out and grab a random compression fitting to fix or modify a brake system

Excellent example of why I like this site!

Figured I would bump this pic as well - not because of how it ties into this thread but because of the overall appearance of the inner fenders - definitely sic Mikey! And the motor don't look half bad either