Hey Gang. I'm fairly new to boating. This will be my second full year on the water. The boat is a 16' v hull silverline fiberglass with a '78 120 hp omc I/O with a 400 stringer. The prop that came on the boat was a 13 1/4 x 17 that had a few dings on it. The boat had come with a rebuilt 13 3/4 x 15 spare prop. I was going to use the original prop as long as I could until I needed the new one but someone told me that I was going to take out some bearings by using the damaged prop. I have now put on the new prop and it seems to work really well but I want to make sure that I am not over reving my engine. With the new prop I am getting 4000 rpm maybe a hair over at wot. My memory might be failing me but I seem to remember the rpm's being much lower with the old prop. I think somewhere between 3000-3500. Can my engine handle 4000rpm?
