Del,
First of all let me say - nice to have you with us.
I would like to hear some "new school" thought on piston speeds. Since I have the carbs straightened out on the little 230, we're hitting 6000 rpm on the track. I really need to swap cams to use this to my advantage - but at least I know it can handle the rpm.
The 230 @ 4.75" stroke is hitting the 4750 fpm piston speed and making me nervous due the fact it has cast pistons. I'm not so concerned with bottom end failure as much as I am piston failure at this point. Cast is lighter, but I'm beginning to wonder how much punishment the molecular bond of cast can take.
Season is over for us, we'll tear this old horse down this winter for an exploratory look and maybe even a little improvement.
Hudson
