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  1. #1
    Flying Scotsman's Avatar
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    Question Riva RY11818 cdi question

    Riva cdi for the gp1200

    What is the curve you use for a stock ski with a Riva box instructions for rev A show a Riva curve when rev B and C dont.
    I have a rev A in the 97 and I think it might be on the Limited curve.

    Should it be on the MOD setting

    I also have a rev B box should it also be on the Mod 1 setting.

    Rev A

    http://69.28.79.48/Instructions/ry11818a.pdf

    Rev B

    http://69.28.79.48/Instructions/ry11818b.pdf

    I spin about 100 rpm more than stock what should my settings be on a
    Rev A or Rev B...........


  2. #2
    bainer1290's Avatar
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    I use the MOD curve on my Rev c

  3. #3
    old school big raider's Avatar
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    use mod 1 only! mark

  4. #4
    Has anybody had bad luck with this box? I have two of the riva cdi and they both went bad. The one has spark but the timing is off and the other dosnet fire at all. Does anyone have one they want to sell?

  5. #5
    Flying Scotsman's Avatar
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    Are you sure its the box thats bad what kind of flywheel do you have.
    Did the ski run ok with a stock box.

    When I put one in the 97 the only instructions I had were on the box Because I dont remember how I set the last 2 switches I will be taking a look next time out.

    I have not tested out my second box I may swap it out with the one in the 97 or I may try it in the 99.

    J-ME went through a few boxes and I know a lot of people have had bad luck with them when using RAD flywheels.

    Scott..............

  6. #6
    Flying Scotsman's Avatar
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    rev b box
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  7. #7
    Dave Sharp dav_dman's Avatar
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    i think it says on instructions only one of those curves is good for pump gas.. has the timing also if you want to design your porting and head squish/dome shape around the curve in order to run 93. I didnt open your pdf..i have a copy if yours don't have the advance and retard sched..

  8. #8
    I am running the stock flywheel. The ski ran fine on the stock box. My other riva cdi dosent even have any spark. Didnt mean to wreck your thread, just wondered. Thanks

  9. #9
    Flying Scotsman's Avatar
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    HCP your comments are welcomed I will make sure my rev A box in the 97 is on mod 1.

    From reading past posts it seems most of the problem boxes were rev A but not exclusively.

    Dave instructions say Mod 1 but they also have a chart thats interesting.
    Indicates that you can go up to 9000 rpm with interall mods.8000 rpm with just bolt ons.

    SCOTT

  10. #10
    One box is a Rev A box and the other is a Rev B. I'm not sure what one has completly quit but just thought I'd share that bit of info. Seems like every time I get one of these boxes to put into my boat, it stops working!!

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