motor size

[drolfe]

I have a 1990 15' Sport which previously had a 60 hp Johnson outboard. Not a 4 cycle. It worked well but now we have trouble getting parts and need a new engine. A marine shop nearby wants to sell me a used 70 hp Suzuki four stroke (155 KG; or 340 lbs); I think it looks like too much engine for this 15' boat. Boston Whaler customer support says they don't have data for motor weight going back to 1990. The boat and capacity tag say the boat is rated for 70 hp but I don't think they even had four strokes back in 1990. Any ideas on the ideal four stroke size for our 15' Sport? Thanks!

[CaptBrett]

Hi Capt,  That 15' Sport is rated for a max of 70 H.P.  I have an older '83 Sport that I am going to start rehabbing this winter. My boat is also rated for a 70. Although Suzuki has come a long way, I am just not a fan.  There are many on the Chesapeake bay where we live.  

I am a mercury man by preference.  However, Merc is not making a 70-HP currently. So in order to max it out I would choose a Yamaha 70.  This is the motor I will be buying for my rig when I am ready.  

https://yamahaoutboards.com/en-us/home/outboards/115-50-hp/70-50

I have run many of these boats, and a 70 is amazing and really scoots along.    Keep me posted on what you select.  Safe boating.