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Old 08 January 2004, 10:53   #1
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opti 135 or F115

I have just been told that Mercury are doing a deal on the 135 Optimax for the boat show and its only going to be 200 extra to the F115 Whats best four stroke or two or is it just about the power.
The rib is a Avon 620 when finished.
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Old 08 January 2004, 11:45   #2
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Yamaha F115
Then suzuki 115/ Mercury 115
then opti's.

In my opinion. God this is gonan start another opti vs 4/s discussion(argument)
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Old 08 January 2004, 11:52   #3
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The mercury is the yamaha engine so I'm told.

Is the two stroke smelly compared to the four?

Also with the Optimax you get all the gauges
Is 20 HP worth the extra 200 ?
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Old 08 January 2004, 12:00   #4
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Oh for sure the boat will be a fair ammount faster with the 135 opti but do you really want the extra speed.
If you do want it them fair enough, but remember its still a 2 stroke. I doubt it will be any smelier after the over oiling during run in, Best ask Daniel about that.

It'll be a bit noisier and a lot more thirsty. True they are economical but they can't match the mercury 4/s and you will have to buget for expensive opti oil.

Will someone confirm whether yamaha and mercury are the same engines?

Mercury/Mariner are the same. Mariner usually cheaper.
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Old 08 January 2004, 12:36   #5
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If you have to think about it then you really need the 4 stroke.

I don't think you'll have much difference in Fuel economy
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Old 08 January 2004, 12:38   #6
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Old 08 January 2004, 12:54   #7
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Id get the opti any day over the f115. The opti is only 20 more hp, but it will feel alot more than that, its a v6 block (f115 is a I4) you'll have alot more torque. Id say the opti would even give you better gas milage, because it's not going to be working as hard.
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Old 08 January 2004, 13:05   #8
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You have got to look at what you intend to do with your boat. If its for family use i would go for the four stroke. i use my boat on the Thames local to me and a four stroke is better at low speed. if on the other hand you want to blat arounf flat out then go for the 2 stroke
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Old 08 January 2004, 13:21   #9
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The Merc/Mariner 115 engine is the same as the Yamaha as far as I'm aware (in that we can order Mariner bits from Barrus and they fit the Yamaha).

I would favour the Opti over the F115. Fuel economy is better on the Opti and since its larger will not be working as hard. It won't be smelly and smokey like most two strokes as it uses far less oil. The noise is a bit more than the F115 but it makes a great growly noise when first starting and when accelerating. Also they can be run on standard Quicksilver oil (at least they could up till last year, don't know if thats changed now) so oil costs are not going to be huge. I think it might be a bit lighter too.
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Old 08 January 2004, 13:36   #10
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Merc 115/135

Just got back from Excel and had look at all engines, i would go for new 115 optimax, cheaper than F115 and 135 opti, faster than F115 and lighter and better on fuel than 135 opti, also looks outstanding.




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Old 08 January 2004, 13:59   #11
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Just have a look at the second hand market.

Boats with 4-stroke engines are holding there value so much better than those with 2-strokes.

Fuel economy will be better with the 4 stroke because its a 4 cylinder, the 135 opti is a 6.

True it will be working harder but that wont matter in the slightest if it is for recreational use. If it were to be used all day every day i would say get the larger block.

115 opti, if there is no power advantage then get the fourstroke.
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Old 08 January 2004, 15:08   #12
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The opti 115 has more grunt and pull than the F115, i had one on holiday back in October. A Mariner 115 Opti on a 6.20 Valiant and the boat flew.



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Old 08 January 2004, 17:45   #13
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why have you got a four stroke on your boat then?
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Old 08 January 2004, 18:09   #14
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Because i've had a Yam 150 hpdi before and wanted to try new F150. Having a Ribeye that are paired with Yamaha it was the only choice, any more smart comments?
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Old 08 January 2004, 18:14   #15
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sorry,didnt mean to make it sound smart. Are you happy with the 4/s or would you go back to a HPDI/Opti?
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Old 08 January 2004, 18:42   #16
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Hang on a minute re the secondhand market.

Are you talking about actual selling prices or what matey booat owner would like to get for the boat.

If what you are saying is that a boat with a 4 stroke is more expensive secondhand than a boat with a two stroke. Then no surprises really as the engine would have cost at least 20% more so the secondhand price would be higher. What a boat sells for is usually considerably less than the asking price.

To give you an example, take a 2000 6.5 Scorpion with an Optimax 135 or with a Honda 130 4 stroke which would you pay more for secondhand and what would you pay less for new

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Old 08 January 2004, 18:50   #17
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I supose your right.
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Old 08 January 2004, 18:54   #18
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Old 08 January 2004, 18:58   #19
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hey dont jump to conclusions. Im not be finished yet.
Though i am bored of the whole 4 vs 2 stroke thing when diesel is obviously the best of all.
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Old 08 January 2004, 19:16   #20
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Quote:
diesel is obviously the best of all.
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