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  1. #1
    Member
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    May 2010
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    Asheville, NC
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    91

    SEI Lower Units experiences?

    Lower unit on my Merc 225 EFI detonated this past weekend. As you all know reman and new LU runs $2,300 and up with 1 year warranty. SEI sells an aftermarket LU for my motor for $795 that they'll warranty for 3 years.

    it sounds too good to be true, but I was wondering if anyone had any experiences with them. I saw a few complaints but it looked like the warranty covered them and they got new units. No updates as to final verdict though.

    help!!

  2. Member
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    Apr 2008
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    herkimer
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    13
    #2

    Re: SEI Lower Units experiences? (basscpa)

    I put a SEI lower unite on my 225 merc and haven`t had any problems yet. I just finished the 10 hour breakin they want you to do. For the money and the 3 year warranty you can`t go wrong.

  3. Member toledo freak's Avatar
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    Feb 2008
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    rayne,la
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    1,099
    #3

    Re: SEI Lower Units experiences? (basscpa)

    if money is a issue and it's not for a super fast boat "go for it" but believe you get what you pay for!!! appearance will not be as good and flawless as a merc case but merc's gearcase price's are absolutley stupid

  4. Member
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    May 2010
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    Asheville, NC
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    91
    #4

    Re: SEI Lower Units experiences? (toledo freak)

    I don't think I have a super fast boat. It's a TR 21 that ran around 70 mph prior to the lower unit erupting.


    Modified by basscpa at 9:31 PM 8/12/2010

  5. Member
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    Jul 2009
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    Wagener S.C.
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    #5

    Re: SEI Lower Units experiences? (basscpa)

    Sent IM.

  6. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Apr 2008
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    Greenville, SC (US)
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    #6

    Re: SEI Lower Units experiences? (basscpa)

    I do not recommend "aftermarket" gearcases..... I have observed that the casting quality is not comparable, and although they "look" the same (in general), have seen several that, after teardown, had <u>multiple</u> machining tolerances WAY out of spec.

    As crude as it sounds.... you'll literally get "what you pay for" with either gearcase choice (JMHO).



    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  7. Member
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    Asheville, NC
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    #7

    Re: SEI Lower Units experiences? (EuropeanAM)

    that's been my exerience in the past (get what you pay for). I appreciate your thoughts.

  8. Mercury 3L/4 Stroke/Verado Moderator EuropeanAM's Avatar
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    Apr 2008
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    Greenville, SC (US)
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    98,150
    #8

    Re: SEI Lower Units experiences? (basscpa)

    Check your IM's..... you may have other options also.



    Dual Mercury Master Technician- for Mercury Outboards, Mercruiser and Mercury Racing at European Marine in Greenville, SC.
    Still consider myself a "Marine Apprentice" after 48 years (learn something new every day).
    Mercury Parts, Mercury Outboards, Smartcraft & Accessories, Injector Service, TDR Reeds- BBC Sponsor

  9. dkingusmc
    Join Date
    Jul 2008
    Location
    Athens, AL
    Posts
    69
    #9

    Re: SEI Lower Units experiences? (EuropeanAM)

    AMEN DON't BUY it When Mine gets back from the Factory from being repaired the 2nd time I'm selling it.
    David B King

  10. Member
    Join Date
    Feb 2005
    Location
    Kentucky
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    6,337
    #10

    Re: SEI Lower Units experiences? (dking)

    you will spend alot of money shipping them back as they do not seem to holdup
    "Luminous beings are we not this crude matter." Yoda

  11. Member
    Join Date
    Nov 2009
    Location
    Palm Bay
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    142
    #11
    i'm on my third one under warrenty.....my boat runs 82.3 gps mph i have followed break in to the tee. each time something different. last time was the pinion gear. time before was "excessive gear wear" and seals

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