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i have have 15ft whaler sport. I'm undecided either to get a 50 or a 70. I'll cary 4 to 5 passengers and would like to ski behind it. My major concern is fuel economy. but how much weight can you put on the back end. a 50 weighs 205 and a 70 weighs 315. is 315 to much weight. lbs is measured w/ 2 stroke motors. i seek advice for motor infromation.

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Mike,

Welcome to WhalerCentral.

There are a lot of 70 hp 2 stroke motors that weigh much less than 315 lbs....

My 1985 Evinrude 70 hp weighed in at 240 lbs.

Check this article out on weights of the 50 hp and 70 hp motors.
http://www.whalercentral.com/readarti...ticle_id=5

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I have a 60 hp ETEC and could not be happier. It pops out of the water like a sling shot and runs about 35. MIne is a 1979 Sport 15'

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I want a new outboard. I want either direct injection ( which for a 70 weigh in over 300 lbs. as goes w/ four strokes. ive done research, and older 2 strokes are lighter than new direct injection outboards and 4 strokes. fools me!

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I have a '76 15' sport with an '04 left over Johnson 50 H.P., It's pretty well balanced between the speed I need, and fuel economy ( I can go all day on 6 gallons of fuel), I was looking for possibly a 70 H.P. but, that engine was hard to find in my price range, and I could not get a 70 at the Evinrude dealer, only a 75 H.P. that they would sell me but, NOT install on the boat (H.P Over rated for the hull), a new 50 was $5000 installed with a new helm, 4 people and a water skier would be a bit much for the 50 H.P motor.

mw