Thoughts on stainless steel brake lines

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quote:

I've never changed a hose for maintenance until there was a failure

I refuse to follow NASA protocol.
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I believe we are in philosophical disagreement regarding maintenance here, but that's okay. I'm not a if-it-ain't-broke-don't-fix-it guy. I strongly believe in preventive maintenance, which includes routine replacement of failure-prone components. I see cracks due to age on the front brake lines, so they are being replaced. The rears appear fine, so they will remain under observation.

However, I do hope that DOT approval means indeed a bit more than self-certification.

From what I've heard by now, especially in regard to the Audi OEM rubber brake hose having a rigid nylon lining, I don't see any reason to upgrade to the ss lines, which originally was my intention.
 
Mori

I was a bit high and to the right with my "self-certified" comment last night, but only a couple of millimeters.

This from the Stoptech site pretty much explains the difference between certified and approved - there is no "approval" process, but there is certification:

Quote:

"What is the difference between lines that are “DOT compliant” and “DOT approved”?

The United States Department of Transportation (DOT) has established numerous standards for automotive components and subsystems. The regulation for brake hoses happens to be FMVSS106. In this document, anything and everything pertaining to automotive brake hoses has been laid out in gory detail – at least, those things important to the federal government.

If a manufacturer claims their SS lines are “DOT compliant”, it means that their SS lines have passed all FMVSS106 requirements, and they have submitted the test data to the government for official certification. This does not mean they are acceptable for use on your car, but it does mean they pass the government minimum standards.

Another term you may hear in this context is “DOT approved.” However, the DOT is not in the business of actually approving or disproving compliance – they don't typically run any tests on aftermarket components themselves. Under these circumstances, one can only surmise that these manufacturers are trying to state that their lines are actually “DOT compliant”, but it never hurts to ask before you buy."

End Quote.

This is from "http://www.stoptech.com/tech_info/wp_stainlesssteel_Q&A.shtml"

Cheers
JJ
 
I wouldn't replace a perfectly good factory line with SS.

But when the time comes for replacement, I'd consider it. Expecially if my car saw track time.
 
quote:

mori, i think all oem brake lines have an inner nylon lyning. rubber alone would not be able to withstand typical brake pressures.

True, you can also tell that they have a rigid internal liner just by trying to pinch them with your fingers.
 
Quote, '' posted January 09, 2006 02:56 PM
mori, i think all oem brake lines have an inner nylon lining. rubber alone would not be able to withstand typical brake pressures. ''

Brake, power steering, and hydraulic hoses usually have an inner layer of rubber, a layer or 2 of steel or fabric braiding, and then an outer layer of rubber. Cut an old one open and see. Brake lines seldom go over 1500 psi. Some hydraulic hoses go up to at least 5,000 with rubber liners. It is the braiding that makes them so stiff.
 
I replaced all the brake lines on my restored Jeep CJ7 with stainless steel and never looked back. The only thing I noticed was a firmer pedal. This could have been because of the old lines "ballooning" or because of the fresh brake fluid. I don't know - but from what I've read ss brake lines do increase pedal effort a little and that's not necessarily bad.
 
It depends where you park your vehicle at night and whether you have cats as pets.
My kittens use to chew on the front driver's side brake hose, it ruptured while driving, car was 2 months old.
Now that I think about it, I should have killed that cat.
 
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