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86-95 Trucks & 4Runners 2nd/3rd gen pickups, and 1st/2nd gen 4Runners with IFS

Anybody else's calipers do this???

Old Dec 24, 2009 | 04:26 PM
  #21  
Bigblock's Avatar
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From: So MS
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.
Bigblock
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Old Dec 24, 2009 | 04:29 PM
  #22  
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From: Temecula Valley, CA
Are you suggesting it's not rust, but maybe some species of moss?
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Old Dec 24, 2009 | 04:34 PM
  #23  
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From: So MS
I'm guessing just as You are!
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Old Dec 24, 2009 | 05:07 PM
  #24  
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From: hubert nc
put a ground strap on the calipers
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Old Dec 24, 2009 | 05:09 PM
  #25  
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From: Temecula Valley, CA
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....
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Old Dec 28, 2009 | 06:39 AM
  #26  
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From: Long Island, NY
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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