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  1. #1

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    RXT iS Injectors, O2 and PSI sample ports

    After reading through some of the 462 pages of my Seadoo maual I found that the fuel rail, clips and injectors are different on the the 255hp ETC engine than the 255hp engine. It also states they are different flow rates and not interchangeable.

    What size injectors are on the 255 ECT engine?

    What options are there on the 02 bung and vacuum/boost tap locations?
    Throw in some pic's too please.

    Thanks, Ken


  2. #2
    Ride Hard! aha's Avatar
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    Hey Ken, for the AFR sensor you can tape the Exhaust manifold. For Boost you can use a boss that is on the intake manifold.

  3. #3

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    The injectors on ECT255 motors are ;
    Siemens Deka 109031 Seadoo#420874834
    255 motors are Seadoo#420874434
    What size are they?

    I know drilling the exhaust manifold next to the water outlet and was seeking other options. Who has used the R&D exhaust O2 bung extender?

    Who has a pic of where they tapped into the intake for the .25" psi tap?

    Thanks, Ken

  4. #4
    GTXX's Avatar
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    Quote Originally Posted by Ken IS255 View Post
    The injectors on ECT255 motors are ;
    Siemens Deka 109031 Seadoo#420874834
    255 motors are Seadoo#420874434
    What size are they?

    Thanks, Ken
    the std 255 injectors are made by Bosch, bright green in color. one company that sells the same injectors says they flow 42.9 @ 3 bar, Bosch says they are 42lb @ 3 bar.

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