Most specialist brake places can re-sleeve cylinders in stainless.
The last ones I had done cost a bit more than a new cylinder - but it was a long time ago
Cheers, Ian
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| Tip's wanted on.....Stopping Moisture in Wheel Cylinders https://www.ausmini.com/forums/viewtopic.php?f=2&t=79718 |
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| Author: | flapper [ Sat Dec 29, 2012 7:48 pm ] |
| Post subject: | Tip's wanted on.....Stopping Moisture in Wheel Cylinders |
In less than 4 years we have new wheel cylinders full of moisture, which means rust, which means leaking brake fluid!. Is there something I can do to stop this!!! |
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| Author: | Mick [ Sat Dec 29, 2012 7:53 pm ] |
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When they're not used too often the machined surfaces inside the wheel cylinders where air from outside can contact them get a little surface rust on them. Then when you go to used them the seal will try to clean the rust away each time it moves over it. This eventually takes a small amount of rubber off the seal for each time the seal has to do this. You could try putting brake assembly rubber grease (PBR or otherwise) inside the boot of the wheel cylinder on assembly, it will protect from corrosion where it makes contact with the machined surfaces inside, but it won't absolutely keep the water out. |
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| Author: | Monte [ Sat Dec 29, 2012 8:06 pm ] |
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Stainless steel is the answer worth every cent |
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| Author: | Mick [ Sat Dec 29, 2012 8:07 pm ] |
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Can you get S/S wheel cylinders, that would be worth having! |
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| Author: | 1071 S [ Sat Dec 29, 2012 8:11 pm ] |
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Most specialist brake places can re-sleeve cylinders in stainless. The last ones I had done cost a bit more than a new cylinder - but it was a long time ago
Cheers, Ian |
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| Author: | Mick [ Sat Dec 29, 2012 8:32 pm ] |
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Oh I got ya, I was expecting a complete S/S cylinder... Yeah, sleeved in stainless is the way to go. |
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| Author: | drmini in aust [ Sat Dec 29, 2012 8:44 pm ] |
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In the old days they used to sleeve cylinders with brass, that was very good too. And probably less likely for the pistons to jam in it. |
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| Author: | flapper [ Sat Dec 29, 2012 8:45 pm ] |
| Post subject: | Tip's wanted on.....Stopping Moisture in Wheel Cylinders |
I have a bloody good wife!!, BUT, BUT BUT, I think I would get a funny look if I gave her 60 wheel cylinders to be sleeved.  ...I think I had better try the PBR grease
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| Author: | peterw [ Sat Dec 29, 2012 10:16 pm ] |
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If water can get in then brake fluid can get out so if the brakes work then the fluid isn't leaking into the system. Most water in brake systems comes from condensation of water vapor in the top of the reservoir and usually takes some years to contaminate the whole system. That's why the recommended replacement period for mineral brake fluid is 2 years. Pete |
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| Author: | origmini [ Sun Dec 30, 2012 6:54 am ] |
| Post subject: | Silicon Fluid |
Why don't you give Silicon Fluid a try? You must however, innitially clean your lines and componets of existing brake fluid.Which means dismantling and re-assembling all wheel cyl.,master and proportioning valve(rubber grease is OK to use in assembly). Whilst all components are off the vehicle, ,use your compressor to flush the system with Methylated Spirit then Silicon Fluid. To my knowledge,this fluid does not attract moisture.I have been using this fluid for 30 years. No rust in components,but,it does tend to use up seals faster. |
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| Author: | Convertible Mini [ Sun Dec 30, 2012 7:23 am ] |
| Post subject: | Good stuff. |
Silicone Dot 5 brake fluid. It is great stuff. A bit more expensive that conventional brake fluid but does a great job especially on cars that don't get used regularly. Silicone brake fluid is also good as it does not Bubble paintwork. |
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