Made this AN fitting lines for my Borgeson set up and the high pressure line failed at the AN fitting.

I am sure I made the lines right, but apparently not

Any suggestions as I don't fancy mopping up steering fluid from all over the engine bay again?

 

What's your hose rating? PS can exceed 1000psi. Speedway motors has hose speced for power steering systems.

 

I just had a hose made by a hydraulic hose company. I had to shorten the original hose that came with it and it leaked. I put the new hose on and no problems. It was expensive but worth it in the long run.

 

The hose is rated at 3000psi

I think I will get new lines made where they crimp the hose ends, rather than screw in

 

brand name of hose and hose end?

 

It's UK Company, Torques UK

 

That is how my new hose ends are done. Plus they are guaranteed.

 

[QUOTE=C3Paul;1585897577]Made this AN fitting lines for my Borgeson set up and the high pressure line failed at the AN fitting.

I am sure I made the lines right, but apparently not

Paul,

You should have been more careful when you worded your introduction, as it implied that the fault lay with Borgeson and its fittings. Only upon reading further is it plain to see that the fault lies elsewhere.

I have been selling Borgeson products in Australia for over four years now and have never handled a faulty component, so it is disappointing to see "headlines" like yours. I can't speak for the good folks in Torrington, but am sure that they would be similarly unimpressed.

Let's all hope that you get your car fixed and are soon on the road again.

Regards from Down Under.

aussiejohn

 

Is that a run of the mill aluminum AN fitting like you would use for fuel line?

If so that's your problem. Power steering pressure lines need to use steel or stainless steel AN fittings to hold up to the pressure. You can't use aluminum on the pressure side.

 

sorry has to quote my own text doing this on IPhone can't figure out how to edit my own post. See fitting bellow as example it also requires specific hose to be used for oil under pressure like pressure side of power steering.

http://www.jegs.com/webapp/wcs/store...=&pgGrp=search

 

It is important when you make an AN line that you use a marker on the braided line as it is very easy to not keep the line in at the proper depth when putting it together. With the marked spot you can see the line walking out as you tighten it if your not keeping enough pressure on the fitting when installing. It looks like a fitting assembly issue to me but it also could be wrong fitting and line.

 

looks like standard stainless braided rubber hose and an aluminum hose end not PS hose and not a PS hose end.

 

OK, it looks as this is my fault with making PS Lines!

Borgeson Kit is Great and they supply their own lines which works great!

Happy for this thread to be deleted or locked

Again, Borgeson Kit is Awesome!!

 

Had NEW Lines made with AN-6 fittings £45.00, fresh fluid, engine is clean, all working as it should!

Love the kit!

 

Those are beautiful lines. Come do my Borgeson install!

 

As said above it looks as though the Hose walked out of the fitting as You tightened it. There are a vast number of Hose and fittings that could of been mixed up that would also cause the problem. However a PS hose is nothing special, most any braided hose should handle that. Aluminum Fittings should be able to handle anything a PS system can throw at it, keep in mind that they are intended for Airplanes, which use low volume high pressure systems. I think the hose just walked out when tightened.

 

Gale I spoke with Jegs about this when I put in my borgeson. The Automotive based AN fitting made of aluminum are meant for no more than 250psi. Do what you want but I would not use the aluminum and standard hose. They make the high pressure oil based hose and fittings specifically for the trans and powersteering type applications for a reason. There are Heat treated aluminum alloy fittings that will handle much higher pressures but thats not what you are getting at most speed shops. The aircraft stuff is special and made of treated aluminum alloy to save on weight.

Transmission pumps put out more than 300 psi and a typical stalled power steering pump will put out almost 1000psi when you cut the wheel over hard against the stop at 1000rpm.

http://www.cdxetextbook.com/steersus...steertest.html

You'll be cleaning up your engine bay if you are unlucky. If you are really unlucky your car will burn to the ground as powersteering fluid is flammable and right by your headers and exhaust.

Tech question response from jegs below:

Thank you for giving Jegs the opportunity to assist you with your technical question.


In reference to your question regarding high pressure fittings for your GM power steering unit, I would suggest using the alloy steel fittings as opposed to the aluminum fittings. They are typically meant for high pressure lines such as transmission and power steering lines. The standard aluminum fittings are meant for pressures up to 250psi maximum only. Russell carries a line of hose that is meant for this type of application as well.

 

I got my fittings from Hydratech Breaking Systems and I believe the lines from Pegasus Auto Racing. I built the lines and have not had any issues. This is a picture with both a Jeep box and a Hydra boost.

 

OK so You got my curiosity going. So I searched a bit and found Aeroquip ( which I find is the best of the fitting manufactures) and was a bit surprised that there recommended PS Hose in 3/8" -6 is only rated at 2250 psi. Most hydraulic hose in a small size like 3/8" is rated at 3000 psi or more. Obviously the Fittings used are rated more than the Hose. http://www.rudmanhydraulics.co.za/do...s/pll_1101.pdf

 

Having been an aircraft mechanic, I know that there is a small percentage of fittings that will fail no matter how well they are manufactured or installed.
In the case of your "screw-on" fitting-----occasionally the hose-as the fitting is screwed on--- will be "pushed" out (un-noticed) just enough that it will separate under pressure and vibration ( a permanent marker should always be used to mark the depth that the hose should be at when the "case" is tight). Even with crimp-on fittings, the crimp can be too "tight" causing the rubber part of the hose to slowly shear in two.