Re: Help! I think I got taken on Craigslist!
Sir, since you and I have very similar boats I'll share this info with you in case it helps for some future reference -I own a 1990 Eclipse 21.5 Cuddy, 5.0, Alpha One. Engine is rated WOT of 4,200 to 4,800rpm. It runs 47mph at 4,700rpm (original speedo and tach) with a 14-1/2" X 19 pitch prop with two people, one dog, a lot of drinks and ice, a too-heavy anchor (that I'm trashing) and two batteries. This year I'd like to find and try a 21 pitch prop (of around 13-7/8" to 14-1/4" dia) to gain a little more speed (maybe three to four mph) without over-revving the engine, since I need a spare anyway.
Your Eclipse appears to be turning good rpms and speed already. If it will do 53mph with just you in it and hopefully 44 to 47mph with eight people on board, it's set up pretty darn well right now.