I recently replaced the front left brake line on my 1987 Nova. I’m afraid of a potential problem, however. The new brake line had compression nuts with different lengths. I didn’t want to leave the brake system open and felt the need to get it done before quitting working on it, so I decided to put the short nut into the fitting to the rubber hose going to the wheel caliper, while therefore putting the long one into the three way distribution block under the hood. I was thinking that with the short one in the wheel well, the dirt and grime would be somewhat blocked from getting on the threads because there would be a shorter gap between the hex head of the compression nut and the top part of the coupling to the rubber hose.
I began to doubt my decision when tightening the nuts. I’m afraid that the nut will bottom out (there won’t be any further threads left) and I won’t be able to tighten it enough to compress the flared end of the brake line enough to get a reliable, leak-free connection. It wasn’t leaking, but I might want to tighten it a bit more in the future. I still have to replace the right side and could benefit from member advice.