I am currently in the process of refitting my Triton24 for a cruise north next year from Brisbane to ?(as far as I get). I am using a 9.9 tohatsu in the well but would like to use a 4stroke however 2 cylinder 4 strokes don't fit in the well. Any thoughts on 6hp 4 strokes such as the Tohatsu would be appreciated. I may need to motorsail at times such as crossing widebay bar and wondering if its a little under power. Any thoughts appreciated.
Winkali

Stick with the two stroke.

Your 9.9 will have more than enough power. Don't go for less.

Welcome Winkali,
the 9.8 Tohatsu is a fantastic engine, and I'd take that over the single cylinder 4st that's about the same size, at 50:1 4 litres of 2st oil should be enough.
Having said that, if you are having troubles with the 2st, or just want to get a new motor, the 6hp UL shaft toehy would be plenty powerful enough to the Triton, though I've heard they can be a bit harder to start, and you need to learn the exact starting procedure that your engine likes to it to start, if you don't want the starting frustrations.

My 6hp 4 str Sailpro extra long shift was easy to start and plenty of thrust. The extra long shaft would be good for your offset well, and less fumes. The fact that it will idle for as long as you like without oiling up is great for many situations. Using less fuel is also advantageous for cruising.

If you decide to sell the two stroke you might just get killed in the rush. What state are you in?

Thanks everyone. I guess I will hang onto the 9.8hp. for as long as I can. I have thought of enlarging the well but it would be a major job and not at the top of my list. Maybe someone will bring out a slimmed down 8hp 4stroke. Here's hoping.

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winkali said..
Thanks everyone. I guess I will hang onto the 9.8hp. for as long as I can. I have thought of enlarging the well but it would be a major job and not at the top of my list. Maybe someone will bring out a slimmed down 8hp 4stroke. Here's hoping.

The Triton 24 will be a much nicer and safer boat with the weight out of the ends. Check out the weight difference between the Tohatsu two stoke and the 8hp 4 stroke.

The Honda 10 on the back of my Cole 23 weighs 36kgs and the weight is noticeable. It is very hard to get the engine up or down on the bracket as well.
But it has heaps of power, quiet, economical and starts first time, every time. Gotta love electric start.

Cripes a Honda 10 at 36kg on a Cole 23. Yes would well expect that the cons are;

"weight is noticeable, and hard to get the outboard up or down on the bracket".

So I hope you don't do your back in........I would......where are you sailing with this set-up - hopefully only inshore as offshore the mass and inertia would be a real issue.............could rip out your transom...........

And the pros are as you say heaps of power, quiet, economical, starts first time with flick of the switch. What speed do you do........12-15+knots? So you would race with McGregor 26's under power?

I have just bought a 1975 built Columbia 22 with a Yamaha 9.9 high thrust 4 stroke at 45kg and am in the process of changing it for a 5hp-6hp 2 or 4 stroke at 26kg.

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Ramona said..

winkali said..
Thanks everyone. I guess I will hang onto the 9.8hp. for as long as I can. I have thought of enlarging the well but it would be a major job and not at the top of my list. Maybe someone will bring out a slimmed down 8hp 4stroke. Here's hoping.

The Triton 24 will be a much nicer and safer boat with the weight out of the ends. Check out the weight difference between the Tohatsu two stoke and the 8hp 4 stroke.

Correct me if im wrong but i think the OP is talking about the physical size is to large as in length and width. Smaller 1 cylinder 4 strokes only go up to 6hp. OPs problem is that an 8/9.9 4 stroke is a 2 cylinder and the diamentions are too large to fit in the well, not the weight.

If it were me id keep the 9.8 and run 100:1. It will be less smokey and you will have more power than a smaller 4 stroke.
Just my 2 cents.
Good luck

Not sure where 100:1 comes from. Mercury and Tohatsu have 25:1 for the run in period then 50:1 after that. Sure less smoke initially with 100:1 but a lot of smoke after that when you blow it up.

www.tohatsu.com/marine/int/tech_info/break_in.html

Fuel consumption for becomes important with long distances to travel and limited fuel carrying capacity. I'd run with the small 4 stroke. I could be wrong, but I think the original engine spec for a Triton was only about 4hp, so you won't have any trouble pushing it along.

If it's of interest, I mounted a 9.9 hp Yamaha 4st extra long leg to the transom of my old Triton. I used a spring loaded bracket to lift the leg out of the water when sailing. I didn't think it carried the weight that bad. Never really needed to run it much past idle to get it to hull speed thanks to the hi thrust prop that is used that on that outboard.

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r13 said..
Not sure where 100:1 comes from. Mercury and Tohatsu have 25:1 for the run in period then 50:1 after that. Sure less smoke initially with 100:1 but a lot of smoke after that when you blow it up.

www.tohatsu.com/marine/int/tech_info/break_in.html

Yamaha recommends 100:1. I have used 100:1 for the past 8 years with my yamaha 30 and so does my three other mates with 2 strokes. I have never had any problems or heard of any running 100:1.

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r13 said..
Cripes a Honda 10 at 36kg on a Cole 23. Yes would well expect that the cons are;

"weight is noticeable, and hard to get the outboard up or down on the bracket".

So I hope you don't do your back in........I would......where are you sailing with this set-up - hopefully only inshore as offshore the mass and inertia would be a real issue.............could rip out your transom...........

And the pros are as you say heaps of power, quiet, economical, starts first time with flick of the switch. What speed do you do........12-15+knots? So you would race with McGregor 26's under power?

I have just bought a 1975 built Columbia 22 with a Yamaha 9.9 high thrust 4 stroke at 45kg and am in the process of changing it for a 5hp-6hp 2 or 4 stroke at 26kg.

Yep, already have a dodgy back, so have modified the setup so the motor has its own security rope which can be run to a winch to raise or lower. It is then locked off to a cleat when in position. When fully raised on the bracket, it is well out of the water. I have modified the cowling to have a rope running around the top the engine to the front to easily allow to tilt the motor without having to reach over the back of the engine.

The bracket itself is well engineered and is fastened internally to the stern frame. The Cole is setup for Cat 5, but we haven't been outside of Lake Macquarie yet.

Have seen over 6 knots, but not sure how much throttle, probably about half. Water started to get thrown up by the bracket and over the motor as it dug itself a big hole. Adjusting the bracket height for the higher speed would fix that, but cruising at 5 knots suits us perfectly.

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EC31 said..

r13 said..
Cripes a Honda 10 at 36kg on a Cole 23. Yes would well expect that the cons are;

"weight is noticeable, and hard to get the outboard up or down on the bracket".

So I hope you don't do your back in........I would......where are you sailing with this set-up - hopefully only inshore as offshore the mass and inertia would be a real issue.............could rip out your transom...........

And the pros are as you say heaps of power, quiet, economical, starts first time with flick of the switch. What speed do you do........12-15+knots? So you would race with McGregor 26's under power?

I have just bought a 1975 built Columbia 22 with a Yamaha 9.9 high thrust 4 stroke at 45kg and am in the process of changing it for a 5hp-6hp 2 or 4 stroke at 26kg.

Yep, already have a dodgy back, so have modified the setup so the motor has its own security rope which can be run to a winch to raise or lower. It is then locked off to a cleat when in position. When fully raised on the bracket, it is well out of the water. I have modified the cowling to have a rope running around the top the engine to the front to easily allow to tilt the motor without having to reach over the back of the engine.

The bracket itself is well engineered and is fastened internally to the stern frame. The Cole is setup for Cat 5, but we haven't been outside of Lake Macquarie yet.

Have seen over 6 knots, but not sure how much throttle, probably about half. Water started to get thrown up by the bracket and over the motor as it dug itself a big hole. Adjusting the bracket height for the higher speed would fix that, but cruising at 5 knots suits us perfectly.

Ok good one, trust the back gets better. Yes that sort of set-up sounds excellent and is what I plan with the 5-6hp unit I fit.

I had a 9.8 tohatsu in my triton, no where near powerful enough, plain dangerous. Put a 4 blade 8.5 inch diameter 5 inch prop on it, improved it but still not good enough.
Ended up putting a honda bf15a in it, thats a 4 stroke elec start 15hp.
The gear box has to be removed and then reattached from below. Only tricky part is reconnecting the gear linkage, but its just a 10mm connecting nut.
I went the real high thrust prop again, 4 blade, 10 inch diameter 7 inch pitch.
Head on 30kt winds are not a problem. Reaches hull displacement speed at half throttle full throttle the the wake pushes halfway up the transom.