Re: 1988 Bayliner will not go faster then 5 mph
you need to get some model airplane paint..White or silver will show-up better.<br />Paint a marker-thick line from the prop shaft, across the hub of the prop, out to one of the blades. Let Dry. Go for a shakdown, and see if the paint line broke, and your mark is no longer one continuous line. This would indicate a spun out hub.<br /><br />If you can get full RPM,but boat don't motivate (like a slipping clutch, or automatic transission low on fluid), it's a "spun out hub". If you are skiing,or like to do hole shots, these props spin out extremely easy. <br />If you cannot get full RPM, you may be under powered. Many Bayliner Capri hulls came standard with the Force 50HP (i don't know what you have), but if this is your setup, and you have a load of two adults and one dog, it will take 5 minutes to plane-out,even in the best of trim. Top speed with one average wieght pilot, you will be lucky to get 30MPH.In which case, you may want to look into a larger motor with more HP.