371xp piston swap

[blly8325]

Got my new piston for my saw!!!Yeyeeeee!! Basically I'm swapping out the scored piston out for the new one. I've rebuilt small automotive engine blocks but never a 2 stroke small engine. My question is should I run a cylinder hone through my cylinder first or is a light sanding w/ some 220 grit okay? I MISS MY SAW. Any video or advice about this procedure would be greatly appreciated.

Thank you.

 

[excess650]

You need to remove any transferred aluminum from the bore, or else it will trash your new piston and rings. Muriatic acid on a Q-tip is generally the recommended method.

Lightly hone with a ball hone, maybe a flex hone, or with 220 W&D with oil just to crosshatch.

Better yet, SEARCH and read.

Be SURE to resolve whatever issue scored your P&C or else it WILL happen again.