I'm not going any further than to say this Fred, but I'll bet that the majority of the Bolters here, that didn't replace the brass had trouble with leaks somewhere down the line. Like I said, you can get away with it sometimes, but to be 100% sure you have a solid leak-free system I'd just bite the bullet and start from scratch. Using the old brass or lines is just a coin toss. Once you have a new system in place there is no reason to break into it for 100,000 plus miles, which in most cases is the life of the vehicle.
And of course at if you have to change a wheel or master cylinder the first or second time you will probably get away with using the old line. And I repeat, steel to cast iron you can some times get away with a couple of times before the tubing work hardens and will not conform to the seat. Your local Midas and repair shops and Sunday mechanics change cylinders all the time with out changing the line, me included. And it’s with the hope it goes out the door without leaving a trail behind or until the 90 day warrantee is up. If the line has to be changed then the domino effect enters the picture.
Mind you now, it’s a hobby for me, not a way to make a living and this is just my opinion and the way I do my work. So I be done with this subject for now, no argument from me, if you don’t like my way then quite simply, do it your way!
Denny Graham
Sandwich, IL
