SS injector supply lines, an upcoming DIY attempt

[theman53]

I don't think compression fittings are recommended on anything that is pressurized. One of those air over hydraulic flaring tools would probably work perfect, but $$$

[Luckypabst]

How do you intend on interfacing either a compression or flared fitting to both the delivery valves and the injectors?

Chris

[Smokey Eddy]

I just sold out and bought from prothe. I'll post in detail about quality and other useful info...

[92EcoDiesel Jetta]

How do you intend on interfacing either a compression or flared fitting to both the delivery valves and the injectors?

Chris

Same here. Just can't see how it can be done.

[R.O.R-2.0]

SS is ALOT more brittle than regular steel, FWIW..

[rs899]

I just sold out and bought from prothe. I'll post in detail about quality and other useful info...

...like what brand of beer cans they were made of?..  you should have waited for mine to come in....

[Smokey Eddy]

meh with shipping its $25. I'm not too worried about it. Worse comes to worst i'll make a pop tester out of one of the lines.
What are the original (oem) lines made out of?

[smutts]

Stainless Steel has several nasty quirks which might mess things up.
Comparatively brittle, I think it work hardens which will make doing the bubble flares a right bugger. Stainless galls with itself, not sure it won't do the same with the injectors, this will bugger up the sealing surfaces. It gets weird pinhole corrosion problems with salt. Lastly it will look just a little bit effete.

[clbanman]

We use both silver brazed fittings and Parflanged tubing for brake and hydraulic tubing.   Our pressures go up to about 3500 psi. 
Check out the Parflange machine at http://www.parker.com/literature/Tube%20Fittings%20Division%20Europe/euro_tfd/EMDC/4390%20UK.pdf as it can handle stainless.    That would take care of the ends.   As far as durability, the process is used on aircraft brake systems so I think that speaks for itself.

[gnavs]

During my research I came across this, from pipe fitting site.

Types of compression fittings:
There are two basic types of compression fitting:

    Type-A or non-manipulative fitting: These fittings are easy to install and do not require any modifications to the tubing. Type-A compression fittings are also known as olive and can be installed using an ordinary wrench for tightening the surrounding nut. These fittings are usually used for water connections.
    Type-B or manipulative fittings: Installation of Type-B fittings require flaring or belling the tubing. In order to remove this type of fitting, a specialized pulling tool is often used for siding the nut and olive away from the pipe or tube. The type-B fitting is mostly used for gas lines.




Using this picture a reference, you can see that if the angle of the sealing face of the fitting body is known then mating it to an appropriate flare or ferrule shouldn't be a problem (providing it isn't some VW proprietary thing).  Typical bubble flares seem to be 37 degrees which leaves the threaded nut as the next piece of the puzzle. 

Perhaps SS isn't the way to go because of it's brittle nature, especially if flaring is the only option, but that doesn't mean the lines can't still be fabbed by hand.  I scored a set of AAZ lines and IP yesterday at Pick n Pull so at least I have something to study. 

I still have hope for this. 

[Jettagli16v]

FYI: I can get these lines from my wholesaler for $12.00-12.50 each,
pre-bent, with two sealing nuts, and even the rubber sleeve. Anyone who has access to the basic import wholesalers, Worldpac or IMC, should be able to get them for you. They are made by a company I have never heard of, Cohline GmbH.
**List is $79 each, but they cost 12-13 ea.
Part nos:
068 130 301 Cyl. 1
068 130 302 Cyl 2, etc...

Lots of places on the internet selling them at $15-20 ea.
-Brad