Tiny crack in SR20 turbine housing
 

Upon taking a closer look at my turbine housing, I found this tiny line, which I believe to be a crack. I doubt it's a gouge, but maybe it is? There also are scratches nearby, and a rather large nick above the suspected crack. Turbine wheel is in excellent condition. What's my plan moving forward?


https://cimg4.ibsrv.net/gimg/www.mia...1edc712010.jpg
https://cimg5.ibsrv.net/gimg/www.mia...6232f3cc1c.jpg
https://cimg6.ibsrv.net/gimg/www.mia...1472a3c0e3.jpg
https://cimg7.ibsrv.net/gimg/www.mia...40a89b2b01.jpg
https://cimg9.ibsrv.net/gimg/www.mia...7fd5e7380d.jpg
https://cimg2.ibsrv.net/gimg/www.mia...086199f642.jpg

I see no scratches, gouges, or cracks. I see a raw cast surface.

Interesting! Maybe I’m too worked up about it, but I would like to hear more opinions. It probably doesn’t need pointing out but just in case, these two areas are the ones I’m most concerned about.

https://cimg5.ibsrv.net/gimg/www.mia...70728f13a.jpeg

Smooth those out with a die grinder maybe.

Both of those look totally normal. Hit them with a dremel or die grinder if it bugs you. Or heat the area with a torch and see if it spreads. Then you would know for sure if its a crack or just casting. My vote is that its just casting.