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Author Topic:   Repowering Sport 15

eolson posted 02-22-2000 02:41 PM ET (US)
Nuts! My old Johnson 70HP bought the farm - badly scored #1 cylinder, almost no compression. Dealer says $3500 to rebuild. I'm considering my options...
I think I'd really like to have a 4-stroke engine for low smoke, good economy, low noise.
From other peoples' posts, looks like a 50HP Honda would do the trick very nicely... for about $5500 at the local dealer.
I'd like to keep the cost down as much as I can while still winding up with a good combination.
Primary use is fishing in the Gulf of Mexico and inshore areas. Also, my kids like to get pulled around on a big tube and had been looking forward to trying water skiing this summer. Max load will be 5 adults going snorkeling & scalloping this summer.
Engine recommendations? Will a 40HP do the job? (It's almost $1000 less).
TIA,
Eric
jimh posted 02-23-2000 01:49 AM ET (US)
I agree that if repowering you should look seriously at 4-stroke power.
Have you considered the Suzuki 50 HP engine? They have the only 4-stroke with computer controlled fuel injection. The weight and size are decent. And they offer a 6-year warranty!
I believe that some Evinrude models are rebadged Suzuki engines.
On my Sport 15, a 50 HP Merc 500 (1976 vintage) takes me to over 30 MPH. As a reformed sailor, that is fast enough for me!
The no-smoke 4-stroke seems to be the way to go on the Whaler 15, *IF* the weigh of the engine is not too much.
--jim
Clark Roberts posted 02-23-2000 03:20 AM ET (US)
Eric, a 50hp engine will be fine.. you will loose that 40+mph tear of the old 70hp but will be able to cruise easily at around 25-28 and top out in mid 30's. I have a 40 Merc on a 15 and it is great for one or two persons and 3 is ok but 5 adults is just too much weight.. you should get at least a 50hp!
The 4 strokers are great! Jim is right about the Evinrude 4 strokes being Suzukis!
And the 50hp Merc and yamaha 4 strokes are same engine , designed and built via joint venture.. Merc makes the block, crank etc and Yamaha makes the head... each has its own distinctive mid section and cowl and both use Merc lower units... Happy Whalin'
clark

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Author	Topic: Repowering Sport 15
eolson	posted 02-22-2000 02:41 PM ET (US) Nuts! My old Johnson 70HP bought the farm - badly scored #1 cylinder, almost no compression. Dealer says $3500 to rebuild. I'm considering my options... I think I'd really like to have a 4-stroke engine for low smoke, good economy, low noise. From other peoples' posts, looks like a 50HP Honda would do the trick very nicely... for about $5500 at the local dealer. I'd like to keep the cost down as much as I can while still winding up with a good combination. Primary use is fishing in the Gulf of Mexico and inshore areas. Also, my kids like to get pulled around on a big tube and had been looking forward to trying water skiing this summer. Max load will be 5 adults going snorkeling & scalloping this summer. Engine recommendations? Will a 40HP do the job? (It's almost $1000 less). TIA, Eric
jimh	posted 02-23-2000 01:49 AM ET (US) I agree that if repowering you should look seriously at 4-stroke power. Have you considered the Suzuki 50 HP engine? They have the only 4-stroke with computer controlled fuel injection. The weight and size are decent. And they offer a 6-year warranty! I believe that some Evinrude models are rebadged Suzuki engines. On my Sport 15, a 50 HP Merc 500 (1976 vintage) takes me to over 30 MPH. As a reformed sailor, that is fast enough for me! The no-smoke 4-stroke seems to be the way to go on the Whaler 15, IF the weigh of the engine is not too much. --jim
Clark Roberts	posted 02-23-2000 03:20 AM ET (US) Eric, a 50hp engine will be fine.. you will loose that 40+mph tear of the old 70hp but will be able to cruise easily at around 25-28 and top out in mid 30's. I have a 40 Merc on a 15 and it is great for one or two persons and 3 is ok but 5 adults is just too much weight.. you should get at least a 50hp! The 4 strokers are great! Jim is right about the Evinrude 4 strokes being Suzukis! And the 50hp Merc and yamaha 4 strokes are same engine , designed and built via joint venture.. Merc makes the block, crank etc and Yamaha makes the head... each has its own distinctive mid section and cowl and both use Merc lower units... Happy Whalin' clark