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Old 06-11-2011, 11:00 PM   #1
COfanatic
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Default Optimax vs. 4 stroke

Are mercury 150hp 4strokes that much better than the 150 Opti? Are they worth the extra $2000+ to upgrade to?

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Old 06-12-2011, 04:13 AM   #2
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Default Re: Optimax vs. 4 stroke

depends on your application and boat in my opinion. Four strokes are nice. No doubt about it. But in certain situations a 2 stroke can be better. Lighter, quicker etc.
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Old 06-12-2011, 09:57 AM   #3
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Default Re: Optimax vs. 4 stroke

The four strokes in that size are supercharged. Merc is is the only one that uses them.
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Old 06-12-2011, 03:50 PM   #4
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Default Re: Optimax vs. 4 stroke

Is merc your only option?
I have been told by many to STAY AWAY from a 2 stroke and only go with a 4 stroke.
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Old 06-12-2011, 05:23 PM   #5
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Default Re: Optimax vs. 4 stroke

I really like my Mercury optimax it has been a great engine. The 2.5L 150 Optimax V6 has a ton of performance that the 4 cylinder four strokes cannot compete with. However the Verado fly by wire digital controls are silky smooth! I think either would be a good choice for fishing, if you are going to do some water sports you may want to look closer at the Optimax.
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Old 06-12-2011, 08:13 PM   #6
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Default Re: Optimax vs. 4 stroke

If its a jet go with the opti. If its a prop do whatever your comfy with. I personally dont like the thought of a supercharged motor. If you dont have to have a merc look at the E-tech. I know E-tech gets touted a lot but its a better motor.
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Old 06-13-2011, 06:49 AM   #7
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Default Re: Optimax vs. 4 stroke

Have to stay with a Merc, it's what they offer with the boat. The boat is a 20' Alumaweld intruder(18degree v), will be used in lakes and occassionally in the CR. Comes with a 115hp, but I'm thinking about upgrading to a 150. Don't really want to pay $4000 more for the 4stroke.
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Old 06-13-2011, 06:55 AM   #8
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Default Re: Optimax vs. 4 stroke

I went with the Optimax on my boat. I could afford the Verado because you have to have the fly by wire controls. Ya they are nice, but.
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Old 06-13-2011, 08:38 AM   #9
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Default Re: Optimax vs. 4 stroke

Quote:
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I went with the Optimax on my boat. I could afford the Verado because you have to have the fly by wire controls. Ya they are nice, but.
I know you have not had the boat for very long, but what are your thoughts on the opti so far.
I am a fan of two strokes. Four strokes are nice, but.

I am thinking they (optimax)will run a loooonnnnggggg time and you will not be sorry. Give a lot of preformance and save quite a few bucks.
anyway.
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Old 06-13-2011, 09:57 AM   #10
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Default Re: Optimax vs. 4 stroke

Optimax Bad..... Little louder, burns more fuel at troll. Good ....Less weight , same if not better fuel economy at speed , less cost ,faster, more responsive .
What not to like?

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Old 06-13-2011, 06:26 PM   #11
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Default Re: Optimax vs. 4 stroke

Quote:
Originally Posted by COfanatic View Post
Have to stay with a Merc, it's what they offer with the boat. The boat is a 20' Alumaweld intruder(18degree v), will be used in lakes and occassionally in the CR. Comes with a 115hp, but I'm thinking about upgrading to a 150. Don't really want to pay $4000 more for the 4stroke.
If your not feelin the 4stroke then dont try. I had a 2003 opti that went 1693 hours until it sucked a reed into the cylinder. Merc rebuilt it for me under warranty (9,000 their dime). Most guys wont hit 1600hrs in their liftime, pretty good for an early optimax.
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Old 06-14-2011, 01:09 AM   #12
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Default Re: Optimax vs. 4 stroke

Quote:
Originally Posted by COfanatic View Post
Have to stay with a Merc, it's what they offer with the boat. The boat is a 20' Alumaweld intruder(18degree v), will be used in lakes and occassionally in the CR. Comes with a 115hp, but I'm thinking about upgrading to a 150. Don't really want to pay $4000 more for the 4stroke.
4k is a lot of extras you can put on instead of the bigger motor
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Old 06-14-2011, 04:53 AM   #13
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Default Re: Optimax vs. 4 stroke

Quote:
Originally Posted by The Cross View Post
I know you have not had the boat for very long, but what are your thoughts on the opti so far.
I am a fan of two strokes. Four strokes are nice, but.

I am thinking they (optimax)will run a loooonnnnggggg time and you will not be sorry. Give a lot of preformance and save quite a few bucks.
anyway.
I only have about 5 hours on the motor so far. I will say I don't care for how it sounds. I went the Opti route because two friends have the same motor and it has basically been bullet proof for them. One did replace his after many years, but replaced it with the same engine. At 3700-3800 I'm getting 33-35mph and 7.1 gph that was during break in. I'll be curious what the fuel usage will be now that break in is done, I know it will use less oil now. 4250 was getting me close to 40mph. have not checked WOT yet but expect 5300 or so.

Another consideration in the purchase was the after sale service. I live about 2 miles from Steven's in Tigard and have heard nothing but raves about their service. I could have had it rigged with a Honda, but then I wouldn't be able to take it up the street for service on the motors.
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Old 06-14-2011, 05:35 AM   #14
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Default Re: Optimax vs. 4 stroke

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Originally Posted by StickFish View Post
I only have about 5 hours on the motor so far. I will say I don't care for how it sounds. I went the Opti route because two friends have the same motor and it has basically been bullet proof for them. One did replace his after many years, but replaced it with the same engine. At 3700-3800 I'm getting 33-35mph and 7.1 gph that was during break in. I'll be curious what the fuel usage will be now that break in is done, I know it will use less oil now. 4250 was getting me close to 40mph. have not checked WOT yet but expect 5300 or so.

Another consideration in the purchase was the after sale service. I live about 2 miles from Steven's in Tigard and have heard nothing but raves about their service. I could have had it rigged with a Honda, but then I wouldn't be able to take it up the street for service on the motors.
What do you mean Ted? Loud? I always liked the way a 2 stroke winds up! Maybe just used to that Yamaha? Lol!
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Old 06-14-2011, 06:13 AM   #15
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Default Re: Optimax vs. 4 stroke

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Originally Posted by The Cross View Post
What do you mean Ted? Loud? I always liked the way a 2 stroke winds up! Maybe just used to that Yamaha? Lol!
Ya it is a bit loud and I'm still used to that quiet little four stroke I used to have. at 3700-3800 it hums right along and I know I'll get used to that. I do know this if you goose it you better be hanging on the acceleration is really good
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Old 07-10-2011, 08:45 AM   #16
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Default Re: Optimax vs. 4 stroke

Any more updates on the numbers you're getting (MPH, GPH, MPG, etc). I bought a 150 Opti that's being installed right now. Should be on and ready for break-in when I get back to Alaska on the 13th. I would LOVE to be getting ~ 5+ MPG, conscidering my current set up (90 Johnson carbed 2s) gets about 2.5MPG and gas where I live is $6.20/gallon.

There's no doubt, the Opti's are LOUD, louder than any other motor. I decided to go with one though because I need the hole shot when I'm upriver running my pump. Seems like the reeds are the #1 problem with them, so I may change to an aftermarket reed that won't damage the cylinder when one breaks. Something to conscider.
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Old 07-10-2011, 09:00 AM   #17
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Default Re: Optimax vs. 4 stroke

34.4 mph 7.1 gph = 4.8mpg I have a prop and not a pump so your mileage will vary

WOT I'm getting 5,000rpm a little low and 46mph. I played with some numbers on a web site and dropping down to a 17 pitch prop I'd get higher rpm but lower speed and lower fuel economy. I'm going to stick with the 19 pitch
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Last edited by StickFish; 07-10-2011 at 09:03 AM.
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Old 07-10-2011, 02:45 PM   #18
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Default Re: Optimax vs. 4 stroke

Man, that's pretty good. Do you have a lift for your set up? I added a lift, mainly for the switch from prop to pump, but my buddies are getting some REALLY good numbers by getting the trim right, then lifting the motor to reduce drag.

Man, I'd love 4.8 MPG without compromising on hole shot. I'll be doing the break-in on Thursday and will report back with my initial numbers.
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Old 07-30-2011, 04:28 PM   #19
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Default Re: Optimax vs. 4 stroke

Quote:
Originally Posted by COfanatic View Post
Are mercury 150hp 4strokes that much better than the 150 Opti? Are they worth the extra $2000+ to upgrade to?
they are fast but you cant put a pump on them. The 115 merc 4strk you can put a pump but not the 150,175, or 200 which are the exact same engine except for the turbo....
I had my eye on the 150 but had to settle for the 115 because the gear case on the 150 and larger is electronic and not compatable with the jet units. If you want the extra hp the optimax is still the fastest on the water and able to take a jet unit
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Old 07-30-2011, 08:24 PM   #20
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Default Re: Optimax vs. 4 stroke

Quote:
Originally Posted by COfanatic View Post
Have to stay with a Merc, it's what they offer with the boat. The boat is a 20' Alumaweld intruder(18degree v), will be used in lakes and occassionally in the CR. Comes with a 115hp, but I'm thinking about upgrading to a 150. Don't really want to pay $4000 more for the 4stroke.

I rode in a 2005? Intruder of the same size and it was a dog with the 115. Only 3 people and no gear (demo ride). Get the 150.
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Old 07-30-2011, 09:12 PM   #21
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Default Re: Optimax vs. 4 stroke

Well, I suppose I should update on my Mercury 150 Optimax repower.

The break-in is complete, I've got about 17 hours on the motor so far. The numbers I'm getting are INSANE!

With the 14 x 19P prop, I'm running a WOT RPM of 5200. A little lower than I'd like, but I'm sticking with it. I ran a 21 pitch, could travel very fast, but couldn't get the RPM's. I haven't determined best cruise, and these numbers are pretty rough, but I'm getting about 32 MPH at 3500 RPM and 5.5 GPH with the prop. The jet does the same speed at 7.1 GPH. Seems like 28MPH @ 6.3GPH is best with the jet.

Once I have more exact numbers (ave. of upriver/downriver throughout the RPM range) I'll report again.
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Old 07-31-2011, 02:48 AM   #22
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Default Re: Optimax vs. 4 stroke

the only thing i will say. i,ve never owned a boat i wouldnt have wanted just alittle more power and speed. if you can swing the 150 hp, i think you,ll always be glad you did. i would only get a 115 hp if i was buying a boat that i really liked and i didnt have the 150 option. just an opinion.
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Old 07-31-2011, 04:55 AM   #23
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Default Re: Optimax vs. 4 stroke

If you are buying the boat new you should always have the option of 150 over 115
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