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Old 11-19-2009, 01:45 PM   #1 (permalink)
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Default OB preference: 2 stroke or 4 stroke?

What's the best motor for a bass boat; 2 stroke or 4 stroke?
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Old 11-19-2009, 01:52 PM   #2 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

I prefer two strokes because of their simplicity. They have a lot less moving parts and are relatively low performance compared to an equal output four stroke.
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Old 11-19-2009, 03:03 PM   #3 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

Quote:
Originally Posted by AndyL
I prefer two strokes because of their simplicity. They have a lot less moving parts and are relatively low performance compared to an equal output four stroke.
+1

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Old 11-19-2009, 03:45 PM   #4 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

I've run both, all on the same brand, size and model hull. The 4-stroke was no competition for any 2-stroke Evinrude or Merc I've had.
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Old 11-19-2009, 04:08 PM   #5 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

Isn't the beef with 4strokes is that they are a lot heavier? But I would assume they are more dependable and not as apt to breakdown.
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Old 11-19-2009, 04:56 PM   #6 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

The new Yamaha should change a lot of minds if it is all they claim. Really it won't matter what we like if 4's are shoved down our throats. I myself don't care about going 80 mph on the water. I will take reliability and longevity over 5-6 mph difference any day all other things being equal.
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Old 11-19-2009, 05:09 PM   #7 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

They say that the new yamaha weighs the same as all of the two strokes.

+1 I would rather have reliability over speed.
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Old 11-19-2009, 06:11 PM   #8 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

The four strokes will not be any more reliable and the cost of a major rebuild will be 50%+ more expensive. A four stroke has to develop twice the cylinder pressure of a two stroke to net the same output. I believe a highly developed two stroke would be better for our application.
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Old 11-19-2009, 06:56 PM   #9 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

Speed vs. Reliability?
When you have to run a 4 stroke wide open to achieve the same performance as a 2-stroke running at 70-80% I don't think you will get either.

I ran a Honda 225 on a 20' Triton. Several of them, of course mine included, developed broken oil pick-up tubes. I got to idle 9 miles back to the ramp in 110 degree desert heat with the oil pressure alarm buzzing in my ear. After that was fixed there were numerous little things that would make it run bad. Water could, and did, enter in through the exhaust ports if you didn't trim it up when you shut it off. It ate o2 sensors and sparkplugs just for fun. It broke down so often that I knew what was wrong with it before I took it in, made it easy for the repair guy though. I finally bought Honda's little tool that removes the error codes so I could just reset it myself.

Finally the oil filter was removed and cut it open. It was full of metal shavings. New powerhead! Eventually it all got sorted out but by that time I was over the whole "it's so quite" and "you don't have to buy oil" stuff.

Honda basically took the engine from a Pilot and mounted vertically. Maybe they were being a little optimistic on how well that would turn out.

None of us really know what the new Yammi will do. I'll hope for the best. Their 2 strokes are known for reliability even if they do burn lots of gas and oil.




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Old 11-19-2009, 07:21 PM   #10 (permalink)
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Default Re: OB preference: 2 stroke or 4 stroke?

That doesn't sound good....Thanks Ober for the insight...
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