hello,
i`m trying to find out waht is the best prop for my 1981 johnson 70hp engine,
my boat weighs about 2000lbs when kitteed up with 3 on board,i`ve got a 13 3/4 x 15 ali prop at the moment but lose power on full revs,not sure of the revs doing as cant figure out how to wire up the rev gauge...
