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  1. #1
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    Mar 2016
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    z21 with 4 stroke or 2 stroke ?

    Looking at either a low hour z21 with 250 Optimax or a new boat with a four stroke. Anyone have experience with both ? Or just thoughts one which one you liked better ?

    Thanks

  2. Member
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    May 2019
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    New Hampshire
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    3
    #2
    4 stroke all day!

  3. Member
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    Feb 2018
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    Mt. Home Arkansas
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    #3
    Go with the fourstroke.
    Quote Originally Posted by Dburg View Post
    Looking at either a low hour z21 with 250 Optimax or a new boat with a four stroke. Anyone have experience with both ? Or just thoughts one which one you liked better ?

    Thanks

  4. Moderator Fishysam's Avatar
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    Oct 2016
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    Jamestown North Dakota
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    9,329
    #4
    No experience other than everyone I know wants to update from 2 stroke to four stroke. Aka wants drive the used market, better save A LOT OF MONEY if getting a 2 stroke
    Mercury 250 proxs 2B115089

  5. tracer1 tracer1's Avatar
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    Jun 2013
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    Aiken, SC
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    2,393
    #5
    Up to a year ago I ran the 250 ProXs. Good motor no doubt. Switched to Yamaha 250 Sho & have had no issues so far. Better low end torque. And not having a oil reservoir gave some room in the battery compartment. I agree with the other, 4 stroke of any brand.

  6. Member Nailbender8's Avatar
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    Jul 2016
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    Jacksonville NC
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    2,086
    #6
    I wouldn’t even have to think about it, get the four stroke!!
    Craig
    USMC Retired
    2019 Nitro Z18 w/Dual Consoles
    2019 Mercury 175 Pro XS

    Psalm 29:3 The voice of the Lord is upon the waters: the God of glory thundereth: the Lord is upon many waters.

  7. Member
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    Sep 2009
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    joliet
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    4,198
    #7
    It depends on the deal I wouldn’t mind either and both dongreat. At this point there is still a strong 2s market especially the go fast boats. However if we are talking long term the market is set for the 4s
    Nitro z21

  8. Nitro Boats Moderator BMCD's Avatar
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    Jun 2004
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    Brookeland, Texas
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    17,459
    #8
    Quote Originally Posted by jasonG View Post
    It depends on the deal I wouldn’t mind either and both dongreat. At this point there is still a strong 2s market especially the go fast boats. However if we are talking long term the market is set for the 4s
    Not too many 4s on the market yet, mine should be on this site this week.
    Bryan McDonough
    2023 Nitro Z21 XL
    Nitro Team

  9. Member
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    Jul 2010
    Location
    Kansas City, MO
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    380
    #9
    Better be a screaming deal on the 2S to even make it a conversation. If not, 4S all day long.
    2019 Ranger z521c (RGR17030E819)
    Mercury 250 Pro XS 4 stroke V8 (2B531611)
    RangerTrail (7J5BBDK20KF164876)

  10. Member
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    Aug 2012
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    Stanley,Wisconsin
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    400
    #10
    I have a two stroke on my z21 and personally don't want a 4 stroke for one there ugly the only benefit is better holeshot and if making long hard runs the 4 stroke is harder on gas also my z21 with Opti 250 is faster then my buddies with a 4 stroke is

  11. Nitro Boats Moderator BMCD's Avatar
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    Jun 2004
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    #11
    My current 4s z21 is faster then any of my z21s with 2 strokes. What I am hearing is fuel mileage is off a bit from 2 strokes at WOT. Not noticeable to me at all. Same distance seems to burn approx the same gas.
    Bryan McDonough
    2023 Nitro Z21 XL
    Nitro Team

  12. Member
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    Sep 2014
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    Oklahoma
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    798
    #12
    Funny 3 or 4 years ago everyone hated the 4s... I switched to a 4 stroke Suzuki 250ss on my Procraft. No way would I go back. Go 4 stroke and don't look back.

  13. Nitro Boats Moderator BMCD's Avatar
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    Jun 2004
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    #13
    Quote Originally Posted by procraftokie View Post
    Funny 3 or 4 years ago everyone hated the 4s... I switched to a 4 stroke Suzuki 250ss on my Procraft. No way would I go back. Go 4 stroke and don't look back.
    I was one of those, but if the same outboard models were available as that time period I would still hate them. I never been in a 4 stroke zuki.
    Last edited by BMCD; 06-11-2019 at 01:26 PM.
    Bryan McDonough
    2023 Nitro Z21 XL
    Nitro Team

  14. Member
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    Sep 2014
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    Oklahoma
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    798
    #14
    I've had good luck with my zuke. I went from a 225 opti to the 250ss. It's a little faster and has lots more midrange punch, but I'm sure a 250opti would probably best it by 1 or 2 mph. But I'll trade that for the quiet reliable power I have now. Ive never been in the merc 4, but I would bet it is a beast.

  15. Member
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    Mar 2018
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    Bella Vista AR
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    #15
    Both still make 250 hp at the end of the day. Hole shot will be better on the FS and top end speeds very similar as boat was designed. Next boat will be a FS but lets be real here a 2018 ProXs 2 stroke isn't a dinosaur, its still new and still under Mercury warranty.
    Phil 4:19 2018 Nitro Z19, 200Pro Xs, Lowrance, Minnkota

  16. Nitro Boats Moderator BMCD's Avatar
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    Jun 2004
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    #16
    Its only better cause it has alot more cubic inches.
    Bryan McDonough
    2023 Nitro Z21 XL
    Nitro Team

  17. Member
    Join Date
    May 2019
    Location
    Tazewell, Virginia
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    1
    #17
    Purchased a 2019 Z21 march with 4s and I love it wouldn’t go back plus benefit of not having to buy oil all the time saves money for gas and maintenance is a breeze

  18. Member
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    May 2013
    Location
    ontario
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    622
    #18
    my opti must have been a pig because my 4stroke getting way better mpgs.
    Nitro2023 triton allure 250 proxs
    Garmin marine
    prostaff


  19. Member
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    Dec 2018
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    Fox Lake IL
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    991
    #19
    Quote Originally Posted by jerrygallogly View Post
    Purchased a 2019 Z21 march with 4s and I love it wouldn’t go back plus benefit of not having to buy oil all the time saves money for gas and maintenance is a breeze
    have you changed your oil and filter yet? Not sure of your reference to buying oil all the time...takes a lot of running to use a gallon on the 250 pro xs 2S, they are very efficient. Agree that the 4S is an improvement, but that not to say you’re buying oil All the time

  20. Member
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    Nov 2018
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    NJ
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    #20
    Quote Originally Posted by I fish 4 Bass View Post
    have you changed your oil and filter yet? Not sure of your reference to buying oil all the time...takes a lot of running to use a gallon on the 250 pro xs 2S, they are very efficient. Agree that the 4S is an improvement, but that not to say you’re buying oil All the time
    4S oil is changed every 100 hours or once a year per the manual. That to me is pretty good!

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