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piston/boring size question '96 speedster twin 720s

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hess996

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After fixing up my 96 speedster I picked up really cheap I found my compression to be very low and very different readings between sides. I decided to pull the cylinders to inspect. All 4 had scaring and need to be bored to clean them up. After a closer look I found out that someone before me had bored out 1 motor to a 83mm and the other side at a stock 82mm.
So my question is, and I of course want them all to be running the same size and since the one motor is already at 83mm would I be ok to run them all to 83.5 or 84mm weisco pistons? Only reason I say weisco is they are the only ones I found that had piston sizes over 83mm.

Thank you for any help.
 
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