1. Wrong forum.
2. You say new engine. I can also list the 94,564 new engines you could be using which means that no one can help you as you are not specific. New engine, new pistons, new build....what?
3. Don't try to repost in the right forum as you should be asking this of your builder, not the internet. This is like asking us for your cancer medicine dosage....that's what you get from the doctor.