Took the 6.0 down to a short block everything looks great but cylinder 4 has a light brownish discoloration circling the top about a 1/3 of the way around. Should I be concerned with this? Was kinda hoping to keep it stock, it's not deep just slightly ruff. Doesn't look like a crack, or from a head gasket leak, maybe it sat in the junkyard too long. Any suggestions in the meantime?

 

See if you can get it off with a scotchbrite pad and some oil.

 

It will come off with oil and a scotch brite bad.


A ball Hone wouldn't be a bad Idea either...

 

Thanks guys! Funny I went shopping this morning and grabbed some scotch brites.. Will give it a try!

 

U could th cross hatching thing n pb blaster make it faster