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    1971 Tri-Sonic Riviera

    I agree. I found a bunch of pictures of my dad (left of 2nd pic) with his friends on the boat when he was my age. Makes me want to get it back on the water every time I see them so I can do the same thing with my buddies.
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    1971 Tri-Sonic Riviera

    Here's some pics of the engine and some older pics of the boat before it was completely covered in leaves and moss.
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    1971 Tri-Sonic Riviera

    My dad mentioned there was a ticking in the outdrive few times it ran before it was parked. I know thats not a lot of information to go on, but does anyone know what that could be?
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    1971 Tri-Sonic Riviera

    Oh yeah... lol thanks
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    1971 Tri-Sonic Riviera

    Awesome, thank you. Do you know some place specifically where I could find/order engine and drive parts?
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    1971 Tri-Sonic Riviera

    Also can anyone give me any info about the HIN? I learned that they weren't required until 1972 (lucky me) and everything was based off of the serial number. Should I use the serial # to try to find parts or is there something else that I'm missing?
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    1971 Tri-Sonic Riviera

    I've got a 1971 Tri-Sonic Riviera that I can't seem to find any information about. The boat is 18' long and it has a Mercruiser 165hp straight 6. The boat has stayed in my family for most of its life, my grandfather bought it from a close friend in 1974, who bought it new in 1971. It was kept in...
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