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Catalina/Capri 25/250 Sailor's Forums

Catalina 25 Specific Forum

6 hp 4-stroke

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wade
Deckhand

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Canada
17 Posts

Initially Posted - 08/28/2007 : 21:13:51

I was just wondering if a 6 hp 4-stroke would be enough motor for my 83. I presently have a 88, 9.9 2 stroke and was thinking about upgrading but the 8 or 9.9's are much more expesive. Any input would be helpful. thanks,

Wade

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OLarryR
Master Marine Consultant

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USA
3440 Posts

Response Posted - 08/28/2007 : 21:47:14

I have a 2006 9.9Hp Honda that cost a bundle. The 6Hp would be tempting but it's generally not the calm water that is the concern. For that, the 6HP would probably be fine except I am not sure what shaft length it comes in and many that have bought motors recently have gone with a 25" shaft to ensure the vents do not come out of the water from a boat's wake or windy/waves days.

The biggest concern I would have with a 6HP is those rare days when caught out in a storm or gusty day. I am not sure if the 6Hp is enough to move the boat sufficiently under those conditions...and even if you go out in good weather...there is always that one day when you get caught ....respect for the sea would be my concern.

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atgep
Master Marine Consultant

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1009 Posts

Response Posted - 08/29/2007 : 10:06:45

If you are in sheltered water where dropping the hook is an option then 6hp would be more than enough and would be cheaper, and much lighter. I like to cruise and the 9.8 giving me 5 kts very quietly at 3500 rpm makes more sense to me. I can maintain hull speed with up to 25kts of headwind. Any more than that and you should be finding a place to park anyway.

It all comes down to how and where you use your boat. Nissan does make the 6hp in a 25in shaft so that is not a concern.

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existentialsailor
Master Marine Consultant

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USA
1180 Posts

Response Posted - 08/29/2007 : 10:51:29

I had a 4.5 on my Capri which weighs about 2000 less than your C25, It was a long shaft, not an extra long. It was inadequate in any serious wind and of course any chop made it useless. Keep in mind though that the Capris are more prone to bounce due to the light weight. Why get rid of the 2 stroke?

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JimB517
Past Commodore

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USA
3285 Posts

Response Posted - 08/29/2007 : 12:08:54

6 HP with a 25 inch shaft would be fine.

I love my Tohatsu 9.8 XXL shaft electric start. Only $1875 with your member discount. No tax, no shipping. Yeah, it is heavy.

I'm getting excellent MPG and have plenty of power and thrust when needed. Its also super quiet.

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cdreamonly
1st Mate

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27 Posts

Response Posted - 08/30/2007 : 21:13:09

I recently downsized the motor on my boat only I went from a 15 hp 2 stroke Evinrude to a 8 hp 4 stroke Yamaha. It is a long shaft (25") "High Thrust" model which means that it is geared lower and has a large prop. With the high thrust and large prop, the 8 hp actually pushes and stops my boat better (the difference is really noticeable when pulling into & out of my slip)than the 15 hp I previously had. I sail on Lake Ontario and it pushes it thru a 2 ft chop with no problem (4-5 knots @ 1/2 throttle). My point in all this is that with our boats, shaft length, prop size/pitch, gear ratios, and the sea conditions in which we sail are just as important as the hp of the motor.

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jerlim
Master Marine Consultant

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USA
1484 Posts

Response Posted - 08/31/2007 : 15:26:25

Don't go lower than the 8hp. You'll be really glad someday, sometime. Remember, the sea is basically out to get you and being vulnerable in the HP dept is a sure way to invite trouble when you'll least want it.

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pegasus
1st Mate

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USA
65 Posts

Response Posted - 09/04/2007 : 07:21:11

I bought the 6HP extra long shaft Tohatsu 4-stroke for my TR/FK and it's been fine. I sail on an inland lake so tides, tsunami's, tankers, ect aren't a concern. The motor will push us along at 5+ knots and weighs about 80 lbs. About $1,300 from outboards online. Oh, yeah... it's not as quiet as the bigger Hondas, but will run forever on a tank of gas. The maintanance is easy, too.

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bbriner
Captain

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349 Posts

Response Posted - 09/04/2007 : 09:24:33

I have a 6hp Nissan (long shaft) that is perfectly adequate under ** normal ** conditions. Usually this is just maneuvering in/out of the marina where it is sheltered so the water is flat and the wind isn't too strong. If I had to rely on it to push the boat against heavy seas I would be in trouble. As for cruising, it will push me along at about 4.5 kts at a comfortable rpm. Under full throttle and favorable current I can get up to hull speed.

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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.