Crank case damage and repair question

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Last spring I built a 550sx reed valve motor with all the goodies - lightweight flywheel, forged pistons, high compression, advanced timing, SBN44 carb, etc. I updated everything except the crank and surprise surprise, had a crank bearing failure after about 60 or so hours of use. I am planning on getting a new crank, sleeves, pistons, etc. and rebuilding the motor for next summer but I’m unsure of what I should do with my crankcase. I’m assuming these scratches are going to affect my engine performance. Is there a way that I can get them repaired? Does anybody on here have a set of clean 550 reed valve crank cases for sale?
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Thanks in advance for the help

-Alex

[wmazz]

Test your crank case for low spots where the connecting rod slammed against the
cases. If you do not have a flat plate you can use, I can help you make one from
3/16" glass from your local hardware store.


Bill M.



550sx bottom case.png

[wmazz]

high compression

How high? The 550 reed came with 175psi stock.


Bill M.

[Myself]

Those scratches are nothing. Literally don't even think twice about them. Rub cases on flat surface to check for "true", then put 'er together.

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Thanks for the advise!!

-Alex