wheel cyl. fitting

well, every time i get close to getting every thing together for my 10'' drum conversion, some other problem crops up. now its the brake line. the line was broke off even with the line nut on the wheel cyl. all the new lines i find has an inverted flare on each end, and the wheel cyl. has a different mating surface. in looking online, the closest thing i can find to discribe it is what they call a bubble flare. has anyone had any experience with these cyl? i dont know about where you all are at, but down here in the south its nearly impossible to find anybody that knows jack about anything older than 10 years old. please tell me something so i can get my car back on the road. thanks, dave. oh ya, this is on a 72 dart.

Dave,

I know I'm a little late to the party, but I know exactly what you mean. I'm currently running into the exact same problem, so I did a search and just now came across this thread...

Just to give you a little background, I've got a '72 340 4 speed duster with a manual 4 drum set up. 10" brakes. I recently lost my brakes and decided to change out my original leaking MC and front wheel cylinders. Got a new MC and two new front wheel cylinders. In the process of changing out the wheel cylinders I snapped off the hard line due to the nut seizing to the line. When I backed off the nut and pulled out the broken line I noticed the inside of wheel cylinder was concave and the flared end of the line resembled a bubble flare, not a double flare. I was under the impression my wheel cylinders were original & all flared ends were double flared. Now the other end of that same line, which connects to the rubber flex line, is double flared. My question is, Did Mopar originally use a bubble flare or something similar for the front wheel cylinders? Anyone else run across this? Some pics below...

0912172314.jpg

Notice the crack in the flare...

0912172315.jpg 0912172316.jpg 0912172315.jpg