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  1. #1

    Square nose so with 760 motor

    I have a mint 650 sn superjet hull as can pick Up a running gp760 motor and electrics super cheap.
    My question is how easy is this conversion and any threads on here about what is involved

  2. #2

    Join Date
    Aug 2006
    Bolts right in, should not be a problem except for the exhaust manifold, they are different. An aftermarket pipe would fix that issue.

  3. #3

    Join Date
    Aug 2011
    Annapolis MD
    I have a SN with 760, B-pipe, ride plate, and scoop grate. Lots of fun. Only had 550JS's before. I have heard from some guys in the business that the SN hull exhaust tube can't quite keep up with the engine and B-pipe. Supposedly the 701 single carb pulls as hard on half as much fuel burn.

  4. #4
    if you use a 8mm helicoil it will screw straight into the 10mm holes in the cylinder and take it back to the right size for the stock pipe.
    reality is just use a bpipe with the same helicoil modification and you will have a little rocket
    the jets in the carb would need to be changed
    2.3 n/s
    120 low speed
    115 high speed
    23 psi pop off and it will rip
    Maybe a bump in compression as well if you want to pull the head off

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