Cunifer tubing for SLS

[bpeters2]

Does anyone has experience with this stuff (cunifer tubing)? I'm thinking of using it to replace all the 6mm hardline in my sls system. I figure it will be a lot easier to bend and flare. Does anyone see any issues (other than the price)?

[OldPokey]

I used copper hydraulic tubing I bought from Maryland Metrics in Baltimore. It works just fine, and I was able to route it around without dropping the rear subframe. The Cunifer is much harder than the stuff I used - and claims to be just as strong as the steel lines, so I don't see any reason why it shouldn't work just fine. I have a feeling it will still be a royal pain to try and route it without dropping the subframe - the copper stuff was difficult enough!

[bpeters2]

I successfully replaced all of the high pressure (feed) line with cunifer tubing. I replaced the return line from the valve all the way to the front passenger seat area, I didn't want to deal with routing the new line under the engine and the old line looked in good shape plus its the lower pressure side. I would definitely suggest the cunifer tubing. It was much easy to work with than steel tubing. I fed it over the subframe without much problem. Also, making those bends right before the valve would be very tight for steel line. I used a flaring tool I got from autopartsmart (ebay store). Flaring the cunifer worked well but flaring the steel line was a lot harder. A tip I learned was to put a little dab on anti-sieze on the tubing before "squishing" the flare...this made the physically a lot easier and also seemed to produce a better flared end. After I was done there was just one small leak but I tightened down the nut and it stopped...so far so good.

Another unexpected treat is that the car no longer sags after sitting w/o engine on. It used to, but it never leaked a lot of sls fluid on the ground so I figured it must have been an internal leak in the sls valve. I figured that if it was a leaky line I would be losing quite a bit of fluid from the system everyday, but I hadn't had to replace fluid for about 6 months. After replacing the lines there is no sagging even after sitting all night!!!?? I'm a bit surprised, but I like it!! Any ideas of what may explain this "miraculous" cure of the saggy rear syndrome

[Simpler=Better]

Originally Posted by bpeters2

Any ideas of what may explain this "miraculous" cure of the saggy rear syndrome

Originally Posted by bpeters2

I successfully replaced all of the high pressure (feed) line with cunifer tubing.

[winmutt]

Originally Posted by Simpler=Better

No, it was a leaky valve. He might have just bled out a poorly placed air bubble.

[bpeters2]

Another factor is that I filled up the system with anti-wear ISO40 instead of the Mercedes stuff that I had been using when I was done with the fix. Maybe that could have something to do with it??