Al Smith
Mac Daddy
Well that brings up another thing .On those crotch rockets of the woods they might offer half a dozen piston sizes or at least they used too .Just rebore the thing and sock the next size in it .The old kart engines were the same . Unfortunately on saw engines that option is a little more involved .Thanks Al, yeah I was thinking of true competition saws, you know like the motocross bikes with engines so on the limit that they only last one race meeting.
That reminds of the old coot in the movie " the worlds fastest Indian " .He made comment to that young boy as contemplating over a shelf full of grenaded pistons that they were just sacrifices to the piston "god " .