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New owner of a Mariah SX19

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Old 09-06-2010, 01:26 AM   #1

Robert Charron is currently offline
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Join Date: Sep 2010
My Year: 2008
My Model: SX19
My Engine: Mercruiser 3.0 litre
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Default New owner of a Mariah SX19

Hi,
I am a new owner of a Mariah 2008 SX19, and I am looking for a "owner manual"? Is it available somewhere?
Also in that boat, I have a Mercruiser 3.0 . I found it not powerful enough. Alone in the boat, there is no problem, but when 4 or 5, it is very long before having the boat out of water.
Is there something I am doing wrong? I had a "helice" with 21 of pitch, and I change it for a 19. It is better, but still not enough. Can I change it for a 17 of pitch?
Thanks for your informations!
Robert
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  • Old 09-06-2010, 01:50 AM   #2

    mikeyt is currently offline
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    My Model: Shabah 180
    My Engine: 4.3
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    Default Re: New owner of a Mariah SX19

    Welcome aboard Robert. Since you have a 'new' Mariah I've cut & pasted a recent response from Sea Fox regarding manuals etc here:

    From: "Amy Fox" <[email protected]>
    >Due to the numerous models our company builds, available with a variety of
    > powering options and features, Sea Fox and Mariah Boat Company does not
    > have any model specific owner's manuals. I have included a spec sheet for your
    > boat. With our new boats we include a National Marine Manufacturers
    > Association (NMMA) owner's manual that outlines boating basics such as
    > operation, safety, navigation, maintenance, etc. If interested, please
    > forward me your address and I will mail a copy of this manual to you.
    > Please let me know if you have any additional questions.
    >
    > Amy Lynn Fox
    > Sea Fox & Mariah Boat Company
    > 843-761-6090, ext. 15
    > 843-761-6157 fax
    >
    > Visit us online today to see the 2008 line up of Sea Fox and Mariah boats.
    > :: Welcome to Sea Fox Boats ::
    > Mariah Boats
    > ::: Team Sea Fox ::: - Homepage


    The 3.0L in a 19' boat is not going to be a fast boat & it will work hard to get on plane with 4-6 people aboard. It will be a comfortable cruiser that is easy on fuel though. Dropping the prop to a 19" pitch will help but i would not suggest dropping to a 17" pitch without first checking what your RPM's are at WOT (full speed or wide open throttle). Your engine is designed to run efficiently between 4400-4800 rpms at WOT so that is the range you need to be in. Higher than 4800 leads to faster engine wear & increased fuel consumption, lower than 4400 and your engine is working too hard. For guidance remember that for each 1" drop in pitch you will gain 200 rpms so you need to be careful.

    The other thing you could consider to improve getting onto plane is adding a pair of Smart Tabs. You can do a site search on "Smart Tabs" and find numerous threads/posts on the subject. Most members who have installed them report faster planing, less low speed 'wander' and the ability to stay on plane at lower speeds. You can also read about them here.
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    Thank you mikeyt for this useful post!
    Robert Charron (09-06-2010)
    Old 09-06-2010, 03:42 PM   #3

    Robert Charron is currently offline
    Posts: 2
    Status: Stowaway
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    My Year: 2008
    My Model: SX19
    My Engine: Mercruiser 3.0 litre
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    Default Re: New owner of a Mariah SX19

    Hey, thanks to Amy Lynn Fox from Mariah boat co, and thanks to Mickey for your promptness to answer my issue! It is the first time I write in this "Mariah owner club", and I aprreciate very much the help brought by the members.
    Again thank you very much, and I will follow your advises.
    Robert

    Another think: What about changing for a 17 of "pitch" but watching my RPM for not going over 4800 RPM?
    Thx.
    Robert
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    Last edited by Robert Charron; 09-06-2010 at 09:41 PM.
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    Old 09-07-2010, 01:17 AM   #4

    mikeyt is currently offline
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    Default Re: New owner of a Mariah SX19

    Quote:
    Originally Posted by Robert Charron View Post
    Another think: What about changing for a 17 of "pitch" but watching my RPM for not going over 4800 RPM?
    Thx.
    Robert
    I suspect that if you were using a 21" and dropped to a 19" you will likely be very close to 4800 already. That 2" drop in pitch would have increased your RPM's at WOT by 400. Next time you have the boat out run it at full speed and make a note of your RPM's before you make any more changes.
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    Old 10-21-2010, 03:39 PM   #5

    Degrande is currently offline
    Posts: 1
    Status: Stowaway
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    My Year: 2007
    My Model: sx19
    My Engine: 3.0 mercruiser
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    Default Re: New owner of a Mariah SX19

    good morning,
    I am completely new as a member. like I had a manual per e-mail for my Mariah SX19 that I need to get my CE approval for Europe
    to get thanks to all those who want to help me
    Bart
    [email protected]
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    Old 10-21-2010, 04:39 PM   #6

    mikeyt is currently offline
    Posts: 7,475
    Status: Platinum Contributor
    Join Date: Jul 2007
    Location: Ontario
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    My Year: 1996
    My Model: Shabah 180
    My Engine: 4.3
    Gallery Images: 14


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    Default Re: New owner of a Mariah SX19

    Quote:
    Originally Posted by Degrande View Post
    good morning,
    I am completely new as a member. like I had a manual per e-mail for my Mariah SX19 that I need to get my CE approval for Europe
    to get thanks to all those who want to help me
    Bart
    [email protected]
    Pleases see post #2 below.
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