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  1. #1
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    Yamaha 150 two stroke or 150 four stroke

    I have always had two strokes. I run 30 miles a day when fishing. What kind of mileage would I get running wot compared to a two stroke on a 19 foot boat?

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    #2

    Re: Yamaha 150 two stroke or 150 four stroke (sapnfish)

    At WOT, fuel comsumption will be very close, providing the 2 stroke is the HPDI. A carburated 150 will consume more than the HPDI and 4 stroke.

    I have been running my F150 for over three years, and I am very pleased with my decision.
    Allison XB-21 ProSport
    Yamaha 250 SHO
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  3. Member kk4iz's Avatar
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    #3

    Re: Yamaha 150 two stroke or 150 four stroke (sapnfish)

    The F150 will surprise you on how will it perform. It will give the 2 stroke a run for the money, on some boats will out perform the 2 stroke.



    12 lbs 9 oz caught on 4/28/1975 Lake Eufaula

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    #4

    Re: Yamaha 150 two stroke or 150 four stroke (kk4iz)

    Fuel use will be about the same, but if you run a lot the two-stroke will use a lot more oil. I have a F150 and change the oil once a year. If you want a "hot rod" I would go with the two-stroke, if you want quiet, smooth, dependability go with the four-stroke. It also depends on the boat you are going to use it on. I love my F150, but it's no "hot rod."
    2004 Stratos 285 Pro XL / Yamaha VF150

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    #5

    Re: Yamaha 150 two stroke or 150 four stroke (Musky Mike)

    My big concern is fuel. I met a guy yesterday at the boat ramp with a suzuki four stroke. He said he gets 30 percent better fuel economy. I find that hard to believe. I have a yamaha 130 and it has been very good. I am just thinking about the next year or two if I go to a 150, if it will be a yamaha four stroke.

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    #6

    Re: Yamaha 150 two stroke or 150 four stroke (sapnfish)

    I could believe 25 to 30 percent better economy if compared to a carbed 2 stroke. The modern EFI 2 stroke and 4 stroke engines are a big improvement over older technology. Up to the 150 hp range, price, performance, and weight are close when comparing modern EFI 2 strokes and 4 strokes.

    Not having to deal with 2 stroke oil is a plus for me.
    Allison XB-21 ProSport
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    #7

    Re: Yamaha 150 two stroke or 150 four stroke (PSM207)

    Better overall performance goes to the 2-stroke hands down IMO.

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    #8

    Re: Yamaha 150 two stroke or 150 four stroke (Darth VMAX)

    A few of us are running the F150 with very good performance results.
    Allison XB-21 ProSport
    Yamaha 250 SHO
    Croxton Razor 4XL

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    #9

    Re: Yamaha 150 two stroke or 150 four stroke (PSM207)

    hello people, the 4stroke weighs about 100lbs more and has many more moving parts that need to be tended to on a regular basis. my vote is 2stroke. just my opinion. (go easy), Rick

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    #10

    Re: Yamaha 150 two stroke or 150 four stroke (Rick CT)

    <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rick CT &raquo;</TD></TR><TR><TD CLASS="quote">hello people, the 4stroke weighs about 100lbs more and has many more moving parts that need to be tended to on a regular basis. my vote is 2stroke. just my opinion. (go easy), Rick</TD></TR></TABLE>

    The F150 does not weigh more than the HPDI 150. In fact, it is a few pounds lighter. As far as complexity, it is actually less complex than the HPDI. Keep in mind, my comments are between the HPDI 150 and F150. Longevity of a 4 stroke is also better. 4 strokes are not for everyone, but the F150 is quite a nice outboard.
    Allison XB-21 ProSport
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    #11

    Re: Yamaha 150 two stroke or 150 four stroke (Rick CT)

    <TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rick CT &raquo;</TD></TR><TR><TD CLASS="quote">hello people, the 4stroke weighs about 100lbs more and has many more moving parts that need to be tended to on a regular basis. my vote is 2stroke. just my opinion. (go easy), Rick</TD></TR></TABLE>

    Yamaha F150 (fourstroke) 466lbs
    Yamaha 150 HPDI (2stroke) 468lbs
    Etec 150hp (2stroke) 419lbs
    Opti 150hp (2stroke) 431lbs
    I'm not seeing anywhere close to 100lbs difference here. I think someone is repeating "hear say" and not doing their own home work.

    At WOT they will probably be the same mpg. Tweaked just right I think it would run with a stock out of the box HPDI. Not sure about the others but I have out run a TR186 with 150 opti (not by much at all, it took a couple of miles) It's got a lot to do with setup. Most people don't have their boat set up right. Either hpdi or F150 will be a great motor. I don't like the messy oil to deal with. Price would probably make my decision between those two choices. Good luck.

  12. Member kk4iz's Avatar
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    #12

    Re: Yamaha 150 two stroke or 150 four stroke (PSM207)

    If they had made a F250 that ran as good as the F150 and as fast compaired to a HPDI 150 I would have went with the F250




    12 lbs 9 oz caught on 4/28/1975 Lake Eufaula

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    #13
    If you run 30 miles per day the 4 stroke is quite a bit cheaper to operate, An oil change and filter will run you about $35.00, that will be it for 100 hours. I run one on an Allison and have over 200 hours in the past year.
    I can fix stupid

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    #14

    Re: (fastguy)

    fastguy - Are you running an F150 on the Alli?
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