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Author Topic:   repowering a 1981 17 ft. sport.

plynhky posted 06-06-2002 08:49 PM ET (US)
I own a 1981 17 ft. The current power is a 70 hp evinrude. The coast guard sticker says the max hp is a 70. My insurance will not cover me if I go over that hp. So..........any suggestions?
Merc goes from 50 to 75 in both the 4 stroke and the 2-stroke.
The four stroke engines seem rather heavy for the hull.
Yamaha makes a 70 2-stroke.
Any thoughts or experiences are welcome. Thanks.
plynhky posted 06-06-2002 09:01 PM ET (US)
Sorry...after posting my message I noticed a typo... I have a 15 ft. boat not a 17.
Tom W Clark posted 06-06-2002 09:04 PM ET (US)
plynhky,
If you have a 1981 17' Sport model then the CG sticker says 100 hp. If your boat started life as a bare hull or utility (without remote steering) then it is possible it would have a 50 hp maximum rating on the placard, but not 70 hp.
I suspect you actually have a 15' Sport? This boat is rated for 70 hp which is plenty.
JBCornwell posted 06-06-2002 09:29 PM ET (US)
Howdy, Plyn.
A 15 is one I haven't had, but it is next on the list.
The Suzi DF70 I have on my Montauk has sold me forever on EFI four strokes.
I think I would look very closely at the Merc 4s 60 EFI and the Johnson/Suzuki 4s DF50 EFI. Both are in the weight class with the OMC 70s that seemed to be the power of choice for most of the life of the model.
(HEY LARRY!! Look! I am recommending a Merc.!) Heheheh.
Good luck.
Red sky at night. . .
JB :)
Boston Marine posted 06-06-2002 10:28 PM ET (US)
If it helps, I have the specs for 1978 on my site under "Performance" Here's the link.
http://www.bostonmarine.net/78%20BW%20Specs.jpg

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Author	Topic: repowering a 1981 17 ft. sport.
plynhky	posted 06-06-2002 08:49 PM ET (US) I own a 1981 17 ft. The current power is a 70 hp evinrude. The coast guard sticker says the max hp is a 70. My insurance will not cover me if I go over that hp. So..........any suggestions? Merc goes from 50 to 75 in both the 4 stroke and the 2-stroke. The four stroke engines seem rather heavy for the hull. Yamaha makes a 70 2-stroke. Any thoughts or experiences are welcome. Thanks.
plynhky	posted 06-06-2002 09:01 PM ET (US) Sorry...after posting my message I noticed a typo... I have a 15 ft. boat not a 17.
Tom W Clark	posted 06-06-2002 09:04 PM ET (US) plynhky, If you have a 1981 17' Sport model then the CG sticker says 100 hp. If your boat started life as a bare hull or utility (without remote steering) then it is possible it would have a 50 hp maximum rating on the placard, but not 70 hp. I suspect you actually have a 15' Sport? This boat is rated for 70 hp which is plenty.
JBCornwell	posted 06-06-2002 09:29 PM ET (US) Howdy, Plyn. A 15 is one I haven't had, but it is next on the list. The Suzi DF70 I have on my Montauk has sold me forever on EFI four strokes. I think I would look very closely at the Merc 4s 60 EFI and the Johnson/Suzuki 4s DF50 EFI. Both are in the weight class with the OMC 70s that seemed to be the power of choice for most of the life of the model. (HEY LARRY!! Look! I am recommending a Merc.!) Heheheh. Good luck. Red sky at night. . . JB :)
Boston Marine	posted 06-06-2002 10:28 PM ET (US) If it helps, I have the specs for 1978 on my site under "Performance" Here's the link. http://www.bostonmarine.net/78%20BW%20Specs.jpg