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  1. #1

    gp1200 cooling diagram for a superjet hull???

    hey guys im putting a gp1200 in my superjet, could someone give me a hand with routing the cooling lines?

    i have dual cooling coming from the pump.
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  2. #2

  3. #3
    Yamaha artisan Cutlass's Avatar
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    Does this picture help you?


  4. #4
    you are the man!!!!

    so both fittings on the head exit the pissers?

    an im pluging the small fitting on the pipe? and running a flow control on the bigger fitting?

    how many pissers should i have? 5?

  5. #5
    Yamaha artisan Cutlass's Avatar
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    I know know. That diagram isn't the greatest. It doesn't even have all the fittings. Its missing the one on the exhaust manifold and the big one on top of the expansion chamber pipe (the part that says "Yamaha").
    Is this GP1200 motor a mostly stock single pipe? if so, dual cooling might not be worth it or gain you much.

  6. #6
    Yamaha artisan Cutlass's Avatar
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    This is how the stock cooling setup looks like:


  7. #7
    dam! thanks the ski already is set up for dual cooling! that helps a ton!

  8. #8
    should i tap the head and run a extra cooling line from my pump to the middle cylinder? i thought i read they get hot?

  9. #9
    Yamaha artisan Cutlass's Avatar
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    You want water out of the head, not in. If you tap the center cylinder, run it out to a pisser

  10. #10

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