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Thread: SE 116 Outdrive Installation with OMC Cobra Conversion Kit Problem

  1. #1
    Join Date
    Mar 2018

    Default SE 116 Outdrive Installation with OMC Cobra Conversion Kit Problem

    I purchased the "Replacement Mercruiser Gen II Sterndrive Unit, Complete Upper & Lower Assembly, SE116, 1.47 Ratio" and the "OMC Cobra Conversion Kit, Adapter, Works w/ SE116 Replacement Sterndrive, 9D-116" on February 27, 2018 to replace the OCM Cobra Outdrive on my 1991 Donzi F23 boat. I started the process of replacing the OCM Outdrive with the SE 116 outdrive this week. I have installed the conversion kit bell housing per the directions provided. I assembled the SE116 upper / lower outdrive components per the instructions provided and am now trying to install the outdrive on the boat using the new bell housing and have run into a problem. The outdrive outer shroud will only slide into the the bell housing about 1/2" before stopping. I have tried repeatedly to remove the outdrive and reinstall it while adjusting the rack used to align the outdrive with the bell housing to overcome this problem and I have not been successful. I have not tried to force installing the outdrive for fear of damaging the bell housing and / or the outdrive.

    What can I do to solve this problem?

  2. #2
    Join Date
    Sep 2015


    Good Morning,

    It sounds like this is something that should be discussed over the phone.

    Please give us a call at (813) 925-7127 and ask for SEI Tech Support and we will assist you in installing this drive correctly.

    Thank You,

    Tech Support
    (813) 925-7127

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115 S. Forest Lakes Blvd.
Oldsmar, FL 34677

tel: 813.925.7127
fax: 813.925.7064

Sterndrive Engineering, Inc. (SEI) manufactures a stern drive designed to replace Mercury Marine's MerCruiserŽ Alpha OneŽ, R, MR, Gen II and Bravo OneŽ stern drives. MerCruiserŽ Alpha One, R, MR, Gen II and Bravo OneŽ are trademarks of the Brunswick Corporation. SEI has no affiliation with the Brunswick Corporation. Consequently, any warranties governing products and or sold by Brunswick Corporation will not apply to products manufactured and or sold by SEI, or to products damaged due to the operation of an SEI product.