Will this be safe to bore or hone???

LIVE2RIDE Powersports

Live & Die 2 Ride
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I am bought this protec 62t/ 61x motor. It came from a race ski. It's bore is 84.5mm on the 61x topend. Group k says 85mm is safe, but i heard 84mm is the limit. The streaks aren't score marks, but i want to be safe since the motor sat for years.

Can i get away with honing and new rings or will i need to bore to 85mm and new topend?

By the way i'm using my crank and 61x cases and wetjet mani.
 

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