cylinder pitting

[Boiler Ben]

I have 7 nice looking cylinder walls in my 390.  Number 8 has some pitting as you can see in this photo.  This is not an extreme build and won't be raced, just a fun driver.  Any concerns with this?  Anything special I should do?

[blykins]

Can you feel them?  A pit is different from a stain.

[Boiler Ben]

I can feel them, but only very slightly.

[blykins]

I don't like to see them but they don't seem to hurt anything.

[oldiron.fe]

                                                                                                                                                                                                                                                                                                             clean pit-nothing to loosen-low in bore better-ring width wider than pit better-best thin quality ductle sleeve for harder use-good luck--oldiron-john   

[Barry_R]

I don't like to see them but they don't seem to hurt anything.

Kinda the same feelings - - as long as none of them are deep enough to bleed coolant.
Probably 95+% of them are OK to use in a street build.
Should have been pressure checked before assembly.
Even then, you won't really know until they are running under heat and pressure.

[pbf777]

      Nope not ideal but, I would highly doubt that that sum of irregularities would create any noticeable problems, and amounts to a far lesser evil then boring to the next size up, or sleeving that cylinder would be.   

      Scott.

[Boiler Ben]

Thank you guys.  I will go with it as is.

[Falcon67]

This is one of the cylinders in my 351C post driveway hone job.  There's a couple with similar stuff.  The engine runs fine, no issues.  No blow by, oil clean, plugs look good. Typical dial is around 7.39 @ 92 MPH in the 1/8 at 3250 lbs race weight, air shifter set at 6200.  Cylinder fresh hone with lube and 320 grit hone, then ball hone with lube, new moly face rings.  It's a thin wall block, already .030 over, just going to run it until it falls apart.

[Phil Brown]

Think of them as mini oil reservior's for the piston skirt