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  1. #1
    Join Date
    Nov 2009
    Location
    Annapolis, MD
    Posts
    183

    Default Engine rotation?

    I am not with my boat right now but in the process of buyimg a new engine, what is the propeller rotation of my 1991 supra sunsport. 351 windsor. Pcm powerslot 1.23x1 transmission?

    I want to make sure as i search for a different 351


    Edge
    IT's just a boat - You need to love it!
    Caress Me down - 1991 Supra Sunsport

  2. #2
    Join Date
    Aug 2010
    Location
    Oyama, B C , Canada
    Posts
    650

    Default

    1:23 to 1 pcm transmission is a right hand rotation of the prop

  3. #3
    Join Date
    Jul 2009
    Location
    Lago Vista, TX
    Posts
    113

    Default

    Hey Edge,

    Maybe this can help. Your firing order should be on the engine tag.

    http://www.planetnautique.com/vb3/sh...0-firing-order

  4. #4
    Join Date
    May 2009
    Location
    syracuse Indiana
    Posts
    425

    Default

    Ok, you have a PCM tansmission with a RH rotation output, but it has a LH rotation input. Your engine is a LH rotation viewed from the flywheel.
    Al
    Supra Beast
    Custom 496 MPI HO 425 hp
    Custom Teak floor

  5. #5
    Join Date
    Nov 2009
    Location
    Annapolis, MD
    Posts
    183

    Default

    So if its right hand rotation of the prop it would be left hand or a standard rotation engine, on a 1.23x1 pcm
    IT's just a boat - You need to love it!
    Caress Me down - 1991 Supra Sunsport

  6. #6
    Join Date
    Aug 2010
    Location
    Oyama, B C , Canada
    Posts
    650

    Default

    my understanding is that the rotation of the 1:23 to 1 is the reverse of the engine rotation.
    If Engine rotation is left then tranny is right
    If Engine rotation is right then tranny is left.
    Any doubts check with ski dim - can alway answer your questions.

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