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 16 hp prop question????? 
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Post 16 hp prop question?????
Jist ordered thos duromax 16hp. Should I put a 8x4 prop or 9x5??


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Wed Apr 10, 2013 7:32 pm
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Post Re: 16 hp prop question?????
8x4 from Back water. Good price and guaranteed to be balance tested. I ran the same prop on all of my 16hp home builds and had a lot of success with them.

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Wed Apr 10, 2013 7:50 pm
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Post Re: 16 hp prop question?????
Yea that's where I'm getting it from just wasn't sure if I should use the bigger or smaller prop

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Wed Apr 10, 2013 8:04 pm
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Post Re: 16 hp prop question?????
I ran an 8x4 on the same engine, put a carb, air filter an exhaust on it and thought it had the ability to turn more


Wed Apr 10, 2013 10:12 pm
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Post Re: 16 hp prop question?????
Would u think it would turn the 9x5 stock? If I do mod it itvwill be a while before I can afford it.

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25 yamaha pushing a 1642 welded flat
20 hp go-devil longtail for hunting
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Thu Apr 11, 2013 4:50 am
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Post Re: 16 hp prop question?????

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Thu Apr 11, 2013 6:35 am
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Post Re: 16 hp prop question?????
I am trying the 8x5 option from Hill Marine. I have the same engine and a GD longtail frame . Reason I am going with 8x5 is that I am using a 13.5 ft lightweight boat and light loads.

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Thu Apr 11, 2013 6:41 am
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Post Re: 16 hp prop question?????
Bobbyjober let me know how it does

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25 yamaha pushing a 1642 welded flat
20 hp go-devil longtail for hunting
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Thu Apr 11, 2013 8:16 am
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Post Re: 16 hp prop question?????
What is the shaft height on that motor .. I have a 12 hp. Copperhead and wonder if I can switch em out ...

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Sat Apr 20, 2013 6:02 pm
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Post Re: 16 hp prop question?????
5 1/4" I believe.

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Sat Apr 20, 2013 8:42 pm
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Post Re: 16 hp prop question?????
I think its the 54" shaft. Mine is a 5 hp that I converted but had to do a lot of mods to make it fit but a this 16 should bolt right up to that 12.5. Measure ur shaft height and that will tell u.

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25 yamaha pushing a 1642 welded flat
20 hp go-devil longtail for hunting
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Sun Apr 21, 2013 8:26 pm
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