Crack or casting flaw?

[BobbedSled]

Right in the middle of the picture....

I just noticed this while doing assembly. Seems an odd place for a crack there is no bolt there.
It is below the cylinder thus if it is a crack I'm no not sure it is an issue however what do you guys think, is it a casting flaw or a crack? Anyone seen this on XS motors?

 

[xjwmx]

There are things like that all over the motors, which are casting flaws (or at least not cracks). If it's not too deep you can sand it away with sand paper if you don't like it.

 

[XSLeo]

Most of our engines have marks like that. It is from casting but not really a flaw.
I cast lead bullets to reload my own ammo. They often have lines like that. A spot on the mold was a bit cooler than the rest of the mold. As molten alloy is poured into the mold the alloy can flow around different areas. The cool spot cools the alloy slightly and the line forms.
Nothing to worry about.
Leo

 

[Gcraay]

I had the same scare when I did mine. I would guess if oil comes out, then worry.

 

[mrtwowheel]

That's right next to a locating dowel area isn't it? When the covers are forced off incorrectly it's the cover that cracks at the dowels, not the engine casting.

Scott