caliper pistons

I have some light corrosion on my rear Nissan Altima pistons. I cleaned them
up with 600/1200 wet/dry paper, flushed everything with brake fluid and they
seem to work fine. Should I be concerned about replacing them in the near
future?

I assume you mean the part of the piston that protrudes from the boot/seal
that the pad rides on?, if so this not a critical area as it will never go
fully back into the caliper bore.
"Martik" > wrote in message
news:1N5Oe.151943$wr.36803@clgrps12...
>I have some light corrosion on my rear Nissan Altima pistons. I cleaned
>them up with 600/1200 wet/dry paper, flushed everything with brake fluid
>and they seem to work fine. Should I be concerned about replacing them in
>the near future?
>
>



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"Martik" > wrote in message
news:1N5Oe.151943$wr.36803@clgrps12...
> I have some light corrosion on my rear Nissan Altima pistons. I cleaned
them
> up with 600/1200 wet/dry paper, flushed everything with brake fluid and
they
> seem to work fine. Should I be concerned about replacing them in the near
> future?

We used to polish a lot of them with crocus cloth and kerosene. We would
chuck them
into a lathe and they would come out sparkling. Never used sandpaper as
such.

And never had a failure.

In later years, some really crappo pistons were used which were composite.
The only
safe way to deal with them, as far as I know, was by replacement.

> wrote in message
. ..
>
> "Martik" > wrote in message
> news:1N5Oe.151943$wr.36803@clgrps12...
> > I have some light corrosion on my rear Nissan Altima pistons. I cleaned
> them
> > up with 600/1200 wet/dry paper, flushed everything with brake fluid and
> they
> > seem to work fine. Should I be concerned about replacing them in the
near
> > future?
>
> We used to polish a lot of them with crocus cloth and kerosene. We would
> chuck them
> into a lathe and they would come out sparkling. Never used sandpaper as
> such.
>
> And never had a failure.
>
> In later years, some really crappo pistons were used which were composite.
> The only
> safe way to deal with them, as far as I know, was by replacement.
>
>
These look like solid stainless steel as I filed a 'deep' groove and the
color did not change. They retract about 80% into the piston bore.

In article <1N5Oe.151943$wr.36803@clgrps12>, says...
>
>
>I have some light corrosion on my rear Nissan Altima pistons. I cleaned them
>up with 600/1200 wet/dry paper, flushed everything with brake fluid and they
>seem to work fine. Should I be concerned about replacing them in the near
>future?

I would start by replacing the brake fluid. Pistons rust because of the water
in the brake fluid. If they are holding pressure, I would not worry about
them.
-----------
Alex