No, I'm not willing to sacrifice this block on an experiment, hence my question.
I appreciate the advice, but it seems to bring up a couple of more.
Since the block is 4.005, will I be able to get pistons that aren't under 4.000?
Or, since this has 8 sleeves, can they be bored? I don't mind going 4.030 if needed.
Your block is at 4.005 now. With a .02" over piston the bore would need to be enlarged by approximately .015". That's .0075 of material removed from the wall. That's equivalent to two sheets of writing paper. All this assuming you stay with the clearance machined into the new pistons and don't require any additional clearance at 4.02". I highly doubt that .0075" removed from the liners would be too much, but you can always have it checked prior to machining.
