thanks i wanted to make sure that it wasnt to like make back pressure or something also do you think its alright to make it a 3 piece line or does it have to be 1 piece.

 

Normal bends won't cause back pressure - however, steel tubing has a bad habit of collapsing when it's being bent, particularly a tight bend. Once the tube buckles, it's junk. For that reason, I recommend at the very least you get a tubing bender, because it's designed specifically to support the 'sides' of the tube while it's being bent, keeping it from collapsing. Yes, you CAN bend tubing by hand if you're very careful, but the tool makes it so much easier.

Now, as for single-piece versus multiple-piece: I prefer a single-piece installation myself. It's more reliable. However, there's nothing saying you can't use several pieces of pre-made line spliced together - it's just that each joint is a potential leak.

You will need a tubing cutter and flaring tool to install a single-piece line.
Those tools will probably not be necessary to hook together pre-made lengths.

 

what if i bought the tubing and made a 3 piece set and connected them

 

i think i will get the pre made steel flexible lines i hop they are not to expensive though

 

i was looking on Jegs website and they have a Teflon coated brake line for pretty cheap and then they have fitting have any of you guys used this stuff and is it good or bad http://www.jegs.com/p/JEGS-Performan...00664/10002/-1

 

Okay, somehow I think we ended up talking about two different things.

Let's start fresh. What exactly are you replacing on the truck? Are you replacing the steel brake lines? Or are you replacing the rubber brake hoses at the calipers and rear axle?

 

im replacing the steel line that goes from the front to the back

 

Okay, that's what I thought originally.

You should replace that with steel line. Rubber or synthetic hoses in a hydraulic system are usually only acceptable if/where movement is needed, and even then, you should keep the length as short as possible, and of course the hose needs to be built to handle hydraulic pressure with a minimum of expansion.

 

ok i will have my first experience with steel line but you guys make it seem simple so ill try

 

Update: OK first i got a 25' coil of steel brake line to make my line with and in the the process broke 3 rental flare kits the first one one of the bar bolts broke so got my deposit back and went to another parts store and rented another one then the nipple adapter thing broke so i exchanged it for another one same thing happened so i gave up and bought a pre made piece of line best invention ever worked great so now im at the point were i need to bleed it and hope for no leaks . now the guy at O'Reillys said let gravity do its job and dont pump the pedal is this a good method