91yellowfellow
New Member
I have a speed boat a 20 ft with a 305 in it and i got this 250 day yesterday. I took it out today with total of 4 adults and there is no spedo but i swear this thing at full throttle is not hitting more then 15 MPH There is a monster wake behind me no matter how much you use the trim tabs or raise or lower the drive nothing works. I know this could maybe me the prop but even so only about 15 mph? I was told the motor was replaced with a brand new 350. When I tore the boat apart i found the cover to the carb and it saids 228 hp thunder bolt.... I am starting to think this boat might only have a 305 in it... Hard to tell from looking as it was dark I will look closer in the daylight... Was a 305 avil that year for the 250da? I am calling the shop that did the motor work tomorrow to ask them as well but this boat should be able to get on a better plane and leave less wake correct? I mean the change in speed from 1200 rpm and 3500 rpm is maybe 5-10 mph maybe..... Opinions?