Does this look like a concerning crack?

[Durtymax]

Does this look like something that should be addressed?

 

[TwoManyXS1Bs]

Many of the casting flaws we've seen on here are thin ribbons that stick *above* the surface, and look like yours. See if it's actually a crack that goes below the surface, or just a raised ribbon.

If it IS a crack, the direction (vertical in your pic) is the safer direction. There's a steel shell insert in the case to support every crank bearing, which distributes the loads across the web. Just avoid revving over 7,500 rpm.

Edit: Keep this pic on file. Take more each time the sump plate is pulled, then compare pics to see if the crack progresses...

 

[mrtwowheel]

Just avoid revving over 7,500 rpm...

Over 7,500, HA, HA

Scott

 

[Jim]

I vote for casting flaw. A crack there would likely go across the casting, not the direction your line is going for the reason 2M just pointed out.

 

[MaxPete]

Yup - I concur. Just keep the revs below 9000.

 

[Durtymax]

You guys are the coolest.

 

[cra-z1]

casting flaw