Right front caliper J line
Well, let's see if I can get three posts in here quick...
While replacing the rubber flex lines on my GT, despite the amount of PB Blaster soaking that was done, I had issues with the flare follower nuts being able to turn around the tubing. I had snapped the tubing on the right front caliper. The search engine here is great, but requires A LOT of patience. I was unable to find any information in one spot, and hope to help by providing some specifics here for this.
As stated above in this thread, this small J shaped brake line attach's to the caliper on one end, and to the flex line at the other end, and is held firm in a bracket(to keep it from bending and eventually breaking)...making its length and shape important. I couldn't get the attachments to load in the order that I wanted, so the picture order is strange.
Picture 6: I put a welding wire into my broken J line until it was flush with the opening, then cut it flush on the other end to determine the length of the tubing...5 3/16" as shown in picture 5.
Now, the type of flare that is on the GT at this location is a double flare, as shown in picture 4(from this sites archives somewhere) for clarification.
I used a NAPA #413-5483 brake line, which is 3/16" tubing x 8" long with 10mmX1.0 nuts shown in picture 2.
One of my flares is already done for me. A double flare folds some of the brake line back into the flare, so I need to add the length to my measurement to cut the tubing to the right size. Using the double flare insert for this size line, it is found that I need to cut my tubing(one side already flared) at 5 5/16" as shown in picture 1. If I had to flare both sides, I would have added another 1/8' to the measurement.
Picture 3 shows the straight tubing, double flared at both ends and ready to bend to shape.