Mazda 626 (1997 - 1999) - V reg - 2ltr - Corroded Brake Pipes

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Tue 25 Mar 2008 13:33
V reg - 2ltr - Corroded Brake Pipes - HLyon
I got advisory on brake pipes recently.

I've had a look at them. They are mostly still coated in plastic. The part where they are slightly corroded is where they are bare a few inches from the flexi hose.

Can the life of these pipes be prelonged?

I thought that greasing them might preserve them a bit longer but I wasn't sure if I'd be sealing water into the corrosion. I then started thinking about the possiblity of using a de-oxidiser like Krust and some primer but I'm not sure if that would be safe to do.

Alternatively I could have them replaced but I suspect that whatever they are replaced with will not be plastic coated and won't last as long.
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Tue 25 Mar 2008 13:45
V reg - 2ltr - Corroded Brake Pipes - Screwloose
H

A brushful of old grease [or new if you're flush] will preserve the steel pipes perfectly.

Replacement pipes will be Kunifer and will outlast the car several times over. You should be asking why cheap, rust-prone, steel pipes were used in the first place....
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Tue 25 Mar 2008 17:10
V reg - 2ltr - Corroded Brake Pipes - graham101
Covering it over with grease will not stop it if corrosion has already started.
Thats like covering over rust on a panel with a coat of paint, it will continue to corrode inward now "un-noticed" until POP!!! and it aint worth the risk with brakes!!!!
The advisory gives you the time to shop around and get the job done.
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Tue 25 Mar 2008 17:51
V reg - 2ltr - Corroded Brake Pipes - Screwloose

There's a vast difference between grease and paint - trust me; it stops rust dead.
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Tue 25 Mar 2008 18:31
V reg - 2ltr - Corroded Brake Pipes - MW
I agree. I would be very surprised if they were that bad, but like with every other component check. Whip off the wheels and inspect. Give them a rub down and if they are 'just a bit brown' then I would Waxoyl (or similar) them. If it is moderately or badly pitted, I would replace it. Grease and Waxoyl work by cutting off the oxygen.
No oxygen = no corrosion.

Edited by MW on 25/03/2008 at 18:32

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