Replacing rubber brake lines with braided lines?

[BlitzVR4]

I am trying to replace the rubber brake lines with some braided lines, but the original lines are so rusted. When I try to remove the old lines the hard lines start to twist. I have used flare wrenches and a lot of PB Buster to penetrate the rust. Anybody have any suggestions on removing the old rubber lines without breaking the hard lines.

 

[Muskrat]

Since you're replacing then, grab the flex line with vice grips as close to the fitting you're trying to remove as possible to prevent it from twisting, and use a flair wrench on the fitting.

 

[BlitzVR4]

I just need to find a way for the hard lines to not twist. I may have to take a torch to it. Not the whole car.

 

[flag24]

More PB Blaster(daily) and time. Forget the torch for now. If you do use a torch eventually make sure you have a very good heat shield behind the lines protecting the body. Take your time installing the new lines to reduce twisting(stress) to a minimum. Been there done that.

 

Go to your local dealer and ask if they carry BG products and if they do ask for some IN FORCE way better stuff than pb blaster.

 

[prove_it]

I have tried many many liquid wrenches and by far Yield has been the best. It's fast. It loosens bolts up in less than a minute. I work in a shop in Sioux Falls SD, and all they use to clear streets of snow is salt. Rust is an everyday thing. I hate to say it though, but if Yield fails you and the lines still twist, then you should replace your lines.