My Brake Hose Education, Replace 'em Options

[Porsche Rescue]

I have often read on this forum that you can't evaluate rubber brake lines from the outside.

Even though the hoses on my '70 looked good, no cracks, etc., I knew they were 40 years old (they have the year of manufacture on the outside). I just replaced all four. I cut the rears with a razor knife to use a 17mm socket to remove. As I had often heard, they deteriorate and close up on the inside. I cannot blow through this one at all. I can't imagine very much fluid was flowing to the caliper, if any. As soon as I bleed them I expect a test drive to show much better brakes with less pedal effort...and have a safer car. First time I have replaced the hoses on a 914 and I have owned about 15 of them in the last 10 years!