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vandrv
Deckhand

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4 Posts
Initially Posted - 01/31/2002 :  19:29:37  Show Profile
I am looking to replace an older Honda 7.5 motor and was wondering what might be the way to go. I am consiering a 9.8 two stroke electric start Nissan. Has anyone had any experience with this motor? The motor mount on my boat states that it can handle 85
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Derek Crawford
Master Marine Consultant

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USA
3324 Posts
Response Posted - 01/31/2002 :  20:29:44  Show Profile
I have an 8hp Nissan electric start and I love it! Just make sure that you get the extra long shaft model!
Derek on "This Side Up"
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Shelby
Navigator

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USA
155 Posts
Response Posted - 01/31/2002 :  21:45:08  Show Profile
Derek,
I've been looking at the Honda 9.9 and they have a 15 or 20 shaft length. Why would you get one over the other?

Shelby on "Third S" '82 C25 #3208 SRSR
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Steve Raffel
Captain

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262 Posts
Response Posted - 01/31/2002 :  21:52:34  Show Profile
Look down the list of topics and you'll find Honda vs Yamaha. There are some good postings under that topic.

Steve Raffel
C 250 WK #408
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Derek Crawford
Master Marine Consultant

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USA
3324 Posts
Response Posted - 02/01/2002 :  00:15:22  Show Profile
Shelby - with the standard factory position of the motor mount, a short-shafted motor will cavitate very easily. I used to have a 20" shaft, and in any kind of a chop the prop would spend half its time out of the water. With the 25" shaft I have never had
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jm
Captain

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Canada
290 Posts
Response Posted - 02/01/2002 :  12:03:01  Show Profile
to quote rick H. from another thread re: internal halyards (I think), or maybe it was something Duane said last week ?

"i'd rather have a little extra, than be short".

applies to the OB shaft as well. Go for the Honda XLS 25".






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Champipple
Master Marine Consultant

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USA
6855 Posts
Response Posted - 02/01/2002 :  17:06:34  Show Profile  Visit Champipple's Homepage
I think my OB shaft is something like 23 or 24 inches and the ladies love it.

All kidding aside, Get yourself a yard stick and measure the distance from the top of your outboard bracket to the waterline and then some...Be generous....(do this in the
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Shelby
Navigator

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USA
155 Posts
Response Posted - 02/01/2002 :  18:42:32  Show Profile
Another question. Because I have to purchase a motor mount (my motor is an inboard right now..and probably going to be replaced soon with an outboard) would anyone recommend the one from Cat Direct as a good one, or is there a better one? Also, how hard
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Bristle
Admiral

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USA
834 Posts
Response Posted - 02/01/2002 :  18:58:56  Show Profile
I chose the Honda 8 over the Honda 9.9, Yamaha 8, and Tohatsu(Nissan/Mercury) 9.9 because:

HP--Honda's 8 is the same engine as their 9.9, less a few boat unit$ and a few hundred RPMs that have no meaning on boats like ours.

Alternator--Honda puts ou
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andy p
1st Mate

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55 Posts
Response Posted - 02/01/2002 :  22:49:24  Show Profile
Is it "cavitation", "ventilation" or something else? The first is the boiling of water in the low pressure area behind a fast spinning prop, causing damage to the blade tips. The second is the condition where a prop is running too close to the surface o
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Bristle
Admiral

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USA
834 Posts
Response Posted - 02/02/2002 :  09:14:55  Show Profile
Andy's right... Moreover, if your shaft is short enough that the cooling intake raises out of the water for more than a few seconds at a time (such as when you're on the foredeck with the engine running), the impeller (water pump) can burn out.

Anothe
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Notice: The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.