40 horses please

[robman]

Hi Breamers, I have a 30 hp oil injected Yammy on my quinnie 4.2 Fishseeker. With all the added stuff the boat is a little under powered. I am happy with the boat it does all I want it to. What I want to do is go up to a 40 hp motor with power tilt and trim. If I go to a four stroke will I gain much because the extra weight will cancel out some of the extra horse power?

I need some help sorting the wheat from the chaff. All the dealers tell you their motors are the best. I am happy with the Yammy but they are pricey, Tohatsus are reasonably priced but they are supposed to be noisy, that is what I have been told, don’t know of it is fact. What are the Mercurys like etc.

I could put up with the 30hp it is an excellent motor, but it does not have power tilt so I can add tilt and some more power at the same time.

The maximum transom weight is 95kgs and max horse power is 40. Any help or oppinions would be appreciated.
Regards Robman

[PlakaBoy]

pfffft! u should be happy to have that much ponies i only have a 15hp Johnson on my tinny

if u do sell ur motor i may be interested can u tell me how much they weigh and shaft length...
anyway ive been trying to source out a 20hp motor they seem to be fairly scarce everyone seems to have them on their boat?
also do u do any diving? if so please take me out to carnac one day i always get my bag limit of cray but then again its out of season.....so ill see u at the end of november

[Bear]

I gather you're using tiller steer??

I'm not a bit fan of the Yammy tiller and the way it's set up, but that's just me.

There is a big difference between 2 and 4 stroke. Noise, fuel, power to say the least. Cost is always a big factor with these though, but as many of the guys who fish with me have found. They do use a lot less fuel from my experience.

Noise and vibration on the hull is better with the 4 as well from both the Yammy and the Honda.

I haven't had any problems with mine yet so I can't say how much of a difference there is as far as parts go. Maybe the other guys can help here.

In the end, as long as I can afford it. I'll be staying with the 4 for sure. Fuel savings alone make it worth it to me.

Curious to see what the others think.

[dantheman]

I have a 60 hp 4 stroke Yamaha , and think it’s a great motor haven’t had a problem with it as yet and it has now done 135 hours, and its only 8 months old,
They have more torque than 2 strokes so it will push around your extra weight with no problems at all.
Either a Yamaha or Honda will be your best bet.
It might cost more upfront but I guarantee it will be cheaper over say a year,, its some thing a lot of people miss,, fuel consumption is amazing, that’s my 2 cents worth,

Cheers Dan

hey guys.
4 stroke technology has come forward a very long way in the last 7years or so.
I used to race MotoX. The two strokes have dominated racing for well over 20 years now for obvious power to weight reasons.
In 96, Yamaha brought out a revoloutionary 4 stroke bike which has completely changed riding forever. The power of these bikes (and the new models which other manufacturers have produced)
is crazy. They keep weight very low aswell. To the point that there is a 250 4stroke that weighs less than a 250 2stroke! yes you heard right. Power is less, but they get to ride in a lower class.
back to fishing. This technology is being used in Outboards.Soon enough, like riding, 2 strokes will be a thing of the past!

Dave

[browndog]

Hey just some friendly advice. In that h/p Range you are talking about i would advise you to go for a 40 h/p yamaha 4 stroke specially if you are going electric start and pwer trim and tilt. The price difference between the two stroke and the four stroke is about a $1000.00. And the weight difference is only about 3 kgs or so. With your fuel saving and the user friendly advantages i suggest that is your best option. I not saying that over all the h/p range that 4-strokes and better value than 2 stroke becasue that simply is not true but in the range that you interesting in (40h/p) it is certainly you best option.

[Alex]

By the way, Merc 30 two stroke is the re-badged Tohatsu 30 2 stroke! Ask your dealer. The only difference is colours. How about "Tohatsus are noisy"?

Hi Robman, I tend to disagree with most on this post, with 40hp yammies anyway. I have always run yamaha, my present motor is a 50hp 2stroke oil injected it's been on about 12 months but prior to it I had a 40hp 2 stroke oil injected yam it was the third 40hp that I have owned and never had a prob with any of them.

A mate of mine is a yamaha dealer and before we fitted the 50hp we tried a 40hp 4stroke, I found I had lest power with it than my old 2stroke and the noise was hardly any different between the two motors, now Im not say this is how it is with all motors Im only talking about yamaha 40's

I personally could not justify the extra $ and the fuel consumpion was far better with the 2 stroke.

My motors get a fairly hard life, as you can imagine on a charter boat. But the 40hp 2 stroke yams never let me down once.

Cheers Samurai

[madsurfe]

I'll back you up on that Samurai. I have a 30hp Yam and it's fuel consumption is very good. Part of the reason is that I don't really need to run it above 3/4 throttle to get a respectable speed.
A friend recorded 48 kmh on his GPs with 45 litres of fuel and 3 passengers on board. It is a few kilos lighter than the 4 stroke and has more grunt than a comparable 4 stroke. It would take many years of use to recoup the upfront $ difference in purchase through fuel savings, yes the 2 stroke uses slightly more and runs at a minimum 100/1 oil ratio, virtually smokeless. As you said about the noise there is not much in it between the two once they are underway. A 4 stroke is significantly quieter on idle but I am yet to travel on a boat that has a quiet 4 stroke when running at top speed.

Oh and top of that the 3cyl, 3 carby, oil injection, power trim & tilt 40hp Yammie is a very nice piece of work. You can also get it in tiller steer.

[Bear]

I'm surprised you say that guys because I've found, up to 40hp, that the 4-stroke is far quieter.

Ask Ira about the testing we've done during the Tinny tests. The Honda 30hp is deadly at full power.

[browndog]

I also find it amazing that people found the 2 stroke better on fuel consuption....actually far better... I cant understand that... I sell both and proberly lean towards 2 -stroke over alll but the two things that 4 ,s have over 2 's in the lower fuel consumption and definately quieter...I realise 2 have advantages too... more torque and lighter..Wot is comes down to is personal preference and buying a motor to suit your own needs....doing alot of short power intensive work buy ya 2 stroke...covering long distances and doing a bit of lower end speed work buy ya 4 stroke...
cheers Mark

[fatman]

I have a 30 Hp Yamaha 2 stroke on my boat and it is a ripper. Punches out of the hole, cheap to service and ecconomical on fuel.
At idle there is a difference in noise between the 2 and 4 strokes, but cruising along I can't tell much between the two.
When I did a price comparison, the difference was about $3000 between the 2 and the 4, ($3400 V's $6200) and about 40 odd kilo's, (59 V's 91) so I went for the two stroke

Hey Bear, what did'nt you like about the setup of the tiller steer Yammies?? Just curious

FATMAN

[Mick]

I think the 40HP Honda will exceed your transom weight limit. The new 50 weighs 102kg and as the 40 is a detuned 50, the weight would be the same.

[Bear]

Hi Fatman,
The model I have used I found very cumbersome to use. The gear handle was also in exactly the wrong spot for me. Just bugged me.

I haven't really looked at any of the other 4s with the same gear on it, tilt and trip, so I'm curious how they compare.

[DAWS]

What are the costs invoved in servicing a 4.
Someone was telling me they are expensive to service.

Daws