No break til lunch. I take lunch at noon. Just do what the cam card says, and keep an eye on your gauges. Watch all the gauges like a hawk, and you see anything, shut it down. Make sure you have some one with you to watch for leaks. This part of it is a two person job. One to handle the throttle, checking vitals, and another under the hood keeping an eye on things. Since the block was ona stand, keep the cap off the radiator for a little while, and have your spotter keep an eye on the coolant level, and flow.