89 911 - Dragging Calipers

[Zeke]

Originally Posted by red-beard

This was a common issue on the 914's at the 30 year mark. Your 911 is a 30 year old.

And it is a poopy head!

Well, he did say he replaced the potentially 30+ YO lines with SS braided lines 3 years ago. Then again, if memory serves, some of the SS lines on the market were substandard. Should have lasted 3 years though.

I think sticking pistons is next up on the list. W/O regular brake fluid flushing, absorbed water content brings rust. This is all elementary (and should be in the 911 Tech Forum).

[red-beard]

What does he expect? When you ask technical questions in OT...

[racerabbit]

Haven't seen it mentioned here yet, so my experience...
had a similar issue, brakes dragging and overheating, but only at track days. rebuilt calipers, new pads, hoses.. brake ducting.. finally discovered the problem when i went to replace the master. The pivot bushing on the brake pedal itself was sticking just enough to keep residual pressure on the master. spent a lot of money on a problem that could be fixed with a spray of lube

[1990C4S]

I will inspect my hoses, they may be defective. It's a cheap and easy swap anyhow.

At least on PPOT I know who's opinion I can trust. And who's I can't...you poopy heads know who you are.

I would post on the technical forum if I had done more research. PPOT is perfect for speculative analysis, it's what people do here all day long.

[hcoles]

Originally Posted by 1990C4S

I will inspect my hoses, they may be defective. It's a cheap and easy swap anyhow.

At least on PPOT I know who's opinion I can trust. And who's I can't...you poopy heads know who you are.

I would post on the technical forum if I had done more research. PPOT is perfect for speculative analysis, it's what people do here all day long.

Easy? The fittings can be something to get loose. I used a few seconds of MAP gas and the came loose.

[1990C4S]

Originally Posted by hcoles

Easy?

I did them three years ago, and the car hasn't been driven in the rain since then, in fact it has hardly been driven. They won't be a problem.

[hcoles]

Originally Posted by 1990C4S

I did them three years ago, and the car hasn't been driven in the rain since then, in fact it has hardly been driven. They won't be a problem.

okay - mine where on there for 30 years or so.

[speeder]

Originally Posted by red-beard

What does he expect? When you ask technical questions in OT...

Well, some of us have thousands of posts on the 911 tech board but have forgotten most of our knowledge, (as well as where I left my keys).

Originally Posted by 1990C4S

I did them three years ago, and the car hasn't been driven in the rain since then, in fact it has hardly been driven. They won't be a problem.

I've never seen exterior moisture or rust affect getting them loose, just over-tightening by the last person and/or stuck from time. The trick always, (I've done dozens), is using the right wrenches to hold and counter hold the fittings. Always.