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Anybody else's calipers do this???

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Old 12-24-2009, 04:26 PM
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Do you park it in the same place every night?Around here the north side of the trees have moss on them.Could just be the weather you have.
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Old 12-24-2009, 04:29 PM
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Are you suggesting it's not rust, but maybe some species of moss?
Old 12-24-2009, 04:34 PM
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I'm guessing just as You are!
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Old 12-24-2009, 05:07 PM
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put a ground strap on the calipers
Old 12-24-2009, 05:09 PM
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Originally Posted by yota4runna
Reminds me of an old proverb:

"A rolling caliper gathers no moss."

Maybe a rolling rotor gathers no moss, but the caliper is mostly stationary....
Old 12-28-2009, 06:39 AM
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Originally Posted by yota4runna
It's very likely the two calipers came from different sources. I've replaced front right and left calipers that came in boxes with the same labeling from the same parts store and were obviously rebuilt at different work stations, if not at completely different rebuilding plants. In a recent case, the calipers had different size bleeder screws, and one had a rubber dirt cap on the screw while the other didn't.

One of your caliper probably got a rust preventive coating, and the other didn't. Bare cast iron will rust very quickly. Rust on the outside has no effect on the performance of the caliper. This is "much ado about nothing."

Yeah I'm not concerned with the performance of the caliper, I know it's brand new, well a reman anyway, so I will get many miles out of it. Plus the ones that I took off, the driver side was almost rotten it was so rusty and it was the one that worked fine, the passenger side looked new and both inside pistons were seized in their bores, so the way it looks means nothing.

Just though it was strange that the driver side rusted right up again, but whatever, guess it's just a coicidence.

Thanks for the discussions guys.
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