I picked up a running-when-pulled M20B27 from a friend's trusted shop for $100 to begin my 2.7i engine build. Engine was complete but had been sitting in the corner of the shop for a while. I stripped it down to the short block yesterday and was a little surprised to see the cylinder walls with quite a bit of visible cross-hatching. I don't know how many miles are on this engine or if it's been rebuilt in the past. From everything I saw it looks very clean on the inside (I pulled the oil pan and looked great under there. Head is also in good shape aside from some carbon buildup to match the pistons).
So here's my question... Does this seem normal or am I looking at a problem? Did the rings never fully seat? Cylinder walls have a perfectly smooth feel with fingertips but a nail can feel the hatching still. Can I clean the pistons, clean and wipe everything down with oil and button it back up?
So here's my question... Does this seem normal or am I looking at a problem? Did the rings never fully seat? Cylinder walls have a perfectly smooth feel with fingertips but a nail can feel the hatching still. Can I clean the pistons, clean and wipe everything down with oil and button it back up?
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