Cracked Case?

kyle91987 · Post by **kyle91987** » Fri Jun 11, 2010 8:24 pm

I was breaking down the engine of my CA77 to rebuild it and examine anything that needed any attention and found this. I can feel it with my fingernail and I'm not a metallurgy expert so I don't know if this is a crack in the case or just a casting flaw. Have you seen anything like this? Should I have it welded while I have it apart?

Edit: It's the upper crank case and the crack I'm referring to is the inside. I posted the outside to see if anyone could see something I missed.

davomoto · Post by **davomoto** » Fri Jun 11, 2010 8:26 pm

Casting mark, they all have it

kyle91987 · Post by **kyle91987** » Sat Jun 12, 2010 10:38 am

All in the same area?

davomoto · Post by **davomoto** » Sat Jun 12, 2010 10:39 am

Loudo · Post by **Loudo** » Mon Jun 14, 2010 5:11 pm

I posed the same question and attached a photo in the Restorations area concerning my bike. Though I didn't get an answer from anyone at the time, it seems I have the answer now. I think the crack I was concerned with appears in the same location as yours.

kyle91987 · Post by **kyle91987** » Mon Jun 14, 2010 8:57 pm

Well, I finally just took a grinder too and sanded the "crack" off. It seems like it was just a casting flaw as it left no lines at all after some light sanding.

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Cracked Case?

Cracked Case?

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