Engine revision / weard damage

[bart.willemsen]

I'm rebuilding a 2-stroke 200 hp from 1999. Before assembly i inspected the cylinders for any damage. 5 out of six seems to have piston marks in the bottom of the block. See picture. Is this normal? If not any idea how this could happen?

[99yam40]

I do not understand what is in the pic

[panasonic]

Nor do I...please take a few more pictures further back so we can get our bearings on what you are trying to show...

[ausnoelm]

Just studied picture for 5 minutes, no idea what it is either.

[bart.willemsen]

If you look into the ( empty) cylinder, and look into the connection rod "pass trough" to the crankshaft. The damege seems to be created bij the piston pin bridge from the pistin

[99yam40]

Sorry, not seeing it.

have you opened the pic you posted?
too close up to tell what we are looking at
try a different pic