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  1. Nova Kaw 650
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    #21 04-17-2018, 04:31 PM
    Quote Originally Posted by printman71 View Post
    Sounds like what Yamaha has now, the SHO (less the supercharged Racing version).
    Actually, this motor (if true) will have an extra 400cc's of displacement, which is a very good thing.
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  2. leo13
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    #22 04-17-2018, 04:36 PM
    Based on the same technology used on the new 3.4L outboards this would not be feasible. A 4.6L V8 would have to weigh 70-80lbs more and that does not include increasing the capacity of the swivel bracket & lower unit. The 3.4L weighs 475+70 would be 545lbs.

    Quote Originally Posted by oiltech09 View Post
    From what I have been told Mercury is testing a 4.6L V8 outboard, 250 HP and 300 HP that weighs 505 LBS. It is supposedly a torque monster and will have a super charger added for the racing division.

    I hope this matures into a production engine for the boating industry.
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  3. oiltech09
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    #23 04-17-2018, 05:25 PM
    Quote Originally Posted by leo13 View Post
    Based on the same technology used on the new 3.4L outboards this would not be feasible. A 4.6L V8 would have to weigh 70-80lbs more and that does not include increasing the capacity of the swivel bracket & lower unit. The 3.4L weighs 475+70 would be 545lbs.
    Well let’s hope they are using a newer technology
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  4. Nova Kaw 650
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    #24 04-17-2018, 05:32 PM
    Even at 545 it's only 40lbs heavier than a 2-stroke Pro XS. Very manageable.
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  5. Stoner
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    #25 04-17-2018, 05:38 PM
    Zoom Zoom!
    @kennethandmacy
    2004 Triton 196
    200 Merc
    1199/898
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  6. stratosjoe
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    #26 04-17-2018, 05:42 PM
    Will it come with accident avoidance programming ?
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  7. joebw
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    #27 04-17-2018, 05:47 PM
    Quote Originally Posted by Nova Kaw 650 View Post
    Even at 545 it's only 40lbs heavier than a 2-stroke Pro XS. Very manageable.
    Agree! My 300XS weighs 505 I think.

    I would look at this new motor for sure if I have to repower.
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  8. gehol
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    #28 04-17-2018, 06:16 PM
    Quote Originally Posted by 06 SB View Post
    Thankfully my boat says 300HP.
    And mine says unlimited.
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  9. 21xTriton05
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    #29 04-17-2018, 06:32 PM
    I'll post pics as soon as I get mine!! Definitely not a rumor
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  10. basscat21
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    #30 04-17-2018, 06:39 PM
    Saw a boat with twin Omc V8s, it was an odd configuation since it was a cuddy boat, not a go fast hull. They were big!
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  11. 06 SB
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    #31 04-17-2018, 08:06 PM
    Quote Originally Posted by gehol View Post
    And mine says unlimited.

    USN Retired
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    2020 Mercury 225 ProXS 4s


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  12. Bill2e
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    #32 04-17-2018, 08:07 PM
    Quote Originally Posted by Cgmboats View Post
    As of today the rumors are correct. Mercury now has 250-300 V8 4 strokes in the pro XS models. Also, the 2 strokes are no longer being built. ONly the racing XS motors will remain 2 stroke. Not sure of the weight but we are searching.

    i thought the Optimax would be built another year
    Bass Cat Caracal STS / Mercury 300 ProXS
    Jayco Northpoint 377 RLBH
    GMC Denali Ultimate DRW
    #ChargeOn #HereWeGo
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  13. Idaho Sandman
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    #33 04-17-2018, 08:28 PM
    Quote Originally Posted by gehol View Post
    And mine says unlimited.
    Same here!
    Viper?
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  14. Fishysam
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    #34 04-17-2018, 08:57 PM
    Quote Originally Posted by printman71 View Post
    Sounds like what Yamaha has now, the SHO (less the supercharged Racing version).
    The private sector has a supercharger bolt on for 500hp sho or offshore encase you have been under a rock
    Mercury 250 proxs 2B115089
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  15. Legend LE-195
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    #35 04-17-2018, 09:43 PM
    Not a peep on the Mercury marine facebook page
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  16. fishin couillon
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    #36 04-17-2018, 10:28 PM
    Quote Originally Posted by waco oso View Post
    Not a peep on the Mercury marine facebook page
    Never....always breaking news on BBC first......
    YOU are not entitled to what I have earned!!!!!

    2014 Phoenix 619 Pro / 2014 Mercury 200 Pro XS
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  17. Loomis88
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    #37 04-17-2018, 10:29 PM
    250 HP is still 250 HP no matter how you slice it
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  18. hellathump
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    #38 04-17-2018, 11:12 PM
    Better do something the sho, is leaps and bounds ahead of pro xs
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  19. rinkydink
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    #39 04-18-2018, 01:00 AM
    When I was young
    And in my prime
    i used to drive fast all the time.

    I could not get enuff horsepower
    until it cost me a tank per hour.

    LOL.

    I am glad we have fast boats, but I use my "speed" only to get to a safe place if a storm gets up.

    be careful and safe. The margin of error is small
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  20. keefus
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    #40 04-18-2018, 06:11 AM
    The plate on my boat says Unlimited HP.
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