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Thread: 1300r heads

  1. #1
    fastkaz's Avatar
    Join Date
    Jan 2007
    Cayman Islands/Orlando Fl

    1300r heads

    i got a waverunner fuel months back...its an xl1200ltd with 1300r head cylinders pistons mainfold and runs liek a charm...but ti got carberators and not the fuel injection...i wanted to put on a 1390 big bore kti on it but what kind of jettins would i have to get for the carbs?

  2. #2
    philip_gpr's Avatar
    Join Date
    Dec 2005
    the jetting will depend on who did the 1390 kit

    GroupK top end porting is conservative and they don't need as much fuel

    A motor ported by Lowell will require different jeting, his porting is more aggressive and the jetting required is larger

    I have a complete new 1390 top-end for sale and I would take your 1300 top end in on trade

    if interested

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