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  1. #1
    rhyne717xp's Avatar
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    R&D Plenum flame arrestor on 717 engine

    I just found a good used R&D flame arrestor locally, i already have prok F/A's on my 96xp so I am gonna use the R&D f/a on my 95xp. My question is will i have to run a primer kit or will the factory choke be okay for this application? I am gonna run an extra set of 40i carbs too, any ideas where my jetting would be?


  2. #2
    rhyne717xp's Avatar
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    Hello, is there anyone out there good on two-stroke Seadoos? Suggestions appreciated.
    I suppose i will try
    70 pilots
    140 mains
    pop off 20 psi

    Does this sound close or too lean for 717?

  3. #3
    rhyne717xp's Avatar
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    What's up? Is everyone getting prepared for doomsday or what? Lmao!! This forum is like a ghost town

  4. #4
    Hey bud. The jetting you listed above is what Factory pipe recommended on their HX 717 pipe kit. Your suggested pop off is a little lower but that sounds about right with a flame arrestor.
    My point is that it should be plenty enough fuel for your stock tuned exhaust.

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  6. #5

    Re: R&D Plenum flame arrestor on 717 engine

    Make sure u use the bracket that holds the carbs to the head if not you will break the manifold

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  8. #6
    rhyne717xp's Avatar
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    Thank you guys!!! I have a custom bracket made for proks for extra bracing. It mounts to the top of the carbs and i am thinking the R&D will fit with the custom bracket sandwiched between. I have plenty of jets ranging from 717 stock to 787 stock +. I am gonna be spending a lot of time tuning my 96xp and 95xp this spring

  9. #7
    Myself's Avatar
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    I have heard with the open f/a on the 717 and using the 787 carbs you should be OK with 77.5 pilots,132.5 or 135 mains,1.5 n/s,95 gram spring. The 717 really likes 30-40 psi popoff even with the free flowing f/a.

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  11. #8
    rhyne717xp's Avatar
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    So, go up on the pilots to 77.5 and pretty much run stock mains? Any turns out on the high speed adjusters?

  12. #9
    rhyne717xp's Avatar
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    Btw thanks for ur help and Merry Christmas

  13. #10
    Myself's Avatar
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    I always start with the adjusters 1 turn out and then make 1/4 turn adjustments until it's dialed in. I would guess you'll end up all the way in.

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