I can use this crankshaft ?
I can try to remove with one micro polish and use again ?
Some suggestion ?

 

I personally wouldn't - but sure you "CAN"........

 

Thank .....
Any other suggestion ??

 

Ouch, that's a pretty risk gamble in my opinion. I haven't messed with cranks too much but I'd rather spend a little more $ on a new/replacement and not have my motor implode.

 

ahh sorry but whats wrong with this crankshaft ? why cant u use it

 

mine looked worse than that, i had the machine shop cut mine 10/10 and got oversized bearings, it turned out great perfect clearances, i turn it to 7.5k daily with a turbo on 10 pounds and its holding strong with 7,000 miles

 

You better not use it in as-is condition!

Get it cut and install O/S bearings.

 

definitely looks like u need to get the journals reground, from the pics it seems pretty deep.

 

Looks like it needs more than just a polishing.

 

Have a machine shop inspect it.

The spun area's may be worse or better than we assume they are. I would really need to see that crank in person and measure the clearances. Honestly... if it's not spun too badly you can have the block align honed and the crankshaft fixed. It looks like in an area of hte crank the bearing melted on the crank... but sometimes pictures can be misleading.