I was almost beginning to believe the problem with the brakes had fixed itself. Nothing fixes itself. Last night on my nightly "gain confidence in the brakes" drive, they started making a hideous squeaking. The pads were dragging, a sign the caliper's pistons were not fully retracting. I remember noticing that the brakes started to squeal before the went out on the drive back from DAS. Why this would eventually lead to a complete loss in brake system pressure, I'm unsure.
The Porsche Performance Handbook pointed out several common problems with 911 brakes. The brake pads will drag when the rubber lines expand internally, blocking the flow of fluid. When braking, pushing the pedal moves fluid towards the calipers. The restriction prevents the fluid from adequately returning to its origin resulting in the calipers not returning all the way to their home position.
I was planning on replacing the brake lines eventually. Looks like I get to do it soon. Stainless steel lines, quick-bleed valves, a pressure bleeder, and some ATE brake fluid have been ordered. I love playing with brake fluid (sarcasm sarcasm). How do I even dispose of brake fluid properly??
On the upside, I plan on registering and insuring the 911 on Friday.
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