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Thread: TRS outdrive

  1. #1

    TRS outdrive

    What is a TRS outdrive ? Or what does TRS stand for ? A HD Mercruiser ? I heard it is usually only for high performance.


  2. #2
    Platinum Member Platinum Member KAAMA's Avatar
    My Boats:
    A boat?....What boat??? How about a galvarnized warsh tub wit a toranady strapped own da rear!
    Join Date
    Oct 2000
    Western Michigan
    Barrett, welcome to the board. The Merc TRS outdrive began being produced somewhere in the early 1970's. Merc discontinued the TRS around '92 or so. The Bravo drive is what began replacing the TRS in about the mid 80's. The TRS is much larger than the Bravo One drive and is a little stronger than the standard Bravo One drive. The TRS was a good drive---just outdated---plus it required a transmission set-up which made the Bravo One much more attractive because of it's cone clutch shifting that eliminated the need for a transmission and gave another bennefit of having more room in the engine compartment as well.

    Perhaps someone else can jump in here and shed a little more light on the TRS for you.

    Thank God for the U.S. Marines!
    ...I'm still a student.

  3. #3
    Registered Crazyhorse's Avatar
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    Jan 2001
    Holland MI
    There is also a TR drive, and I believe it will swing a larger diameter prop than the TRS. Someone chime in if I didn't get that right.

  4. #4
    VIP Member VIP Member JaayTeee's Avatar
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    2002 baja 33 o/l 575sci's
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    Nov 2002
    TR= "transmission" model
    TRS="transmission sport" model

    Yes a TR can swing up to a 20" dia.
    prop ( kind of like the Bravo II lower)


  5. #5
    Thank you all for your responses. My neighbor and I looked at this 25' no name low profile ski boat in Redwood City. It was abandoned on its twin axel trailer with 4 flats in a lot with many other unclaimed campers, trailers, powerboats and sailboats. I lifted the engine cover, saw a V8 with Cadillac Crusader on the one remaining valve cover. Looking between the engine and transom we looked at each other and said what is that ? An old fella there said it was a TRS drive but didnt know any more than that. And now I know. I visited there again a short while ago and all of the boats, trailers and campers had been crushed by a backhoe and put into a 40 YD dumpsters.
    I asked the harbormaster about why they do that. It is standard procedure to do that with abandoned pleasure boats.

  6. #6
    Registered Crazyhorse's Avatar
    My Boats:
    38 Cigarette flat-deck
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    Holland MI
    Why do they call it Redwood City? Was the founding father's name Red Wood?

  7. #7
    Check this out.

    They say that in the old days, turn of the century, they mill and ship redwood and other timber from the Santa Cruz mountains and the surrounding forested areas that enclose the southern portions of SF Bay.
    No more logging these days.
    Everything now is protected.

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