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Author Topic:   Re-powering 1964 SAKONNET
jbnh posted 11-11-2014 09:36 PM ET (US)   Profile for jbnh   Send Email to jbnh  
I [may] repower my 1964 SAKONNET 16 [with a] Honda 60 or Yamaha 70. There is likely some water in the hull, as the stern sits low with current Yamaha 100-HP. [Give me] thoughts [about the HONDA 60 or YAMAHA 70 engine choice]. I have heard that the difference in performance between these two is not all that much, and I am not looking for top-notch speed.
jimh posted 11-12-2014 11:19 AM ET (US)     Profile for jimh  Send Email to jimh     
jimh posted 11-12-2014 12:10 PM ET (US)     Profile for jimh  Send Email to jimh     
Speed is a function of the power/weight ratio to the 0.5 exponent. To increase to 70-HP from 60-HP would likely only increase the speed by a ratio of 1.08:1
Tom W Clark posted 11-14-2014 01:16 PM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
A Sakonnet will perform well with either motor but the Yamaha F70 is significantly more powerful and the boat will be faster.

There are also many, many other model in this class that would work well too including the Yamaha F60 and Suzuki DF60.

I have a friend with an old Katama (same hull) and an old Honda BF50 and that boat will do 33 MPH with two aboard and full fuel.

Lupi posted 11-20-2014 01:40 PM ET (US)     Profile for Lupi  Send Email to Lupi     
We do have a 1962 Sakonnet that has been recently repowered with a Yamaha F70. Excellent choice. This engine weights roughly same lbs than all 50/60 hp on the market and seems to be the only one in this power range to weight less than 300 lbs. The program of our Sakonnet is fish and ski and with this combination boat/engine, it does both perfectly.
rtk posted 11-23-2014 08:50 AM ET (US)     Profile for rtk  Send Email to rtk     
I'm going through the same thought process for my 1966 16' hull that I have just recently "re-acquired". I want a low horsepower, low weight modern engine for this boat.

The Yamaha F70 looks like it's perfect for the boat. I've heard nothing but good things. If my trusted outboard dealer who I have been dealing with for 10 years was a Yamaha dealer I would likely go in that direction.

I was talking to him yesterday about this when I dropped my 21 Outrage off for winterization and service. He strongly recommended the Evinrude E-TEC 60. He has sold new boats with this engine and had re-powered boats with this engine and he was very impressed with the performance of this engine. He knows the hull- he has one himself. If were his choice he would pick the E-TEC 60.

So I'll likely go in that direction. The white saltwater model and the very compact size will look great on the boat. It is probably priced about a thousand dollars less than the Yamaha F70 based on the price I was quoted on the E-TEC and the internet prices on the F70 I have seen.

There seems to be a lot of great choices in this category of engines that will work just fine. Good luck with your re-power!


Alan Heckman posted 11-23-2014 01:23 PM ET (US)     Profile for Alan Heckman  Send Email to Alan Heckman     
I repowered my Alert 17 with a Yamaha F70 this spring and the performance , fuel efficincy ,quiet running, easy starting, and light weight make it a home run for a 17 ft. Whaler IMO.

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