From my experiences I would say to have your crank turned, you know what you are dealing with and you can choose a quality person to do it. Purchasing the crank kit is the same thing turning your own, they are just turning someone elses core and doing an exchange program. There is a chance, like someone said before, it was welded or something. I took my crank to a machine shop and paid around 60 bucks to have it turned .10 .10, rod and main. I think it is better to know what you are dealing with, shop around. They will warranty a bad one I'm sure, but who wants to finish a motor and have a problems with the crank?
You should at least have the crank checked before you make that choice.Check the sixe of the journals to see how far out of spec it is and if it's been cut before.There's always a slim possibility that it can't be turned safely.Just a thought from my house to yours.
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