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  1. #1
    Hell Bent or Heaven Sent? Bent's Avatar
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    96 slx (smoother ignition adance?)

    I can certainly live with the "powerband like" kick that the stock ignition offers when it advances it's timing, but is there anything that can be done to make it seem less intimidating to the un-itiated?


  2. #2
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    Something like a learners key on a seadoo for kids and inexperienced riders? How bout tripping it into limp mode? Like adding a switch shorting the temp sensor wire to ground, but leaving the sensor hooked up. Creating a parallel circuit to trigger limp mode. Retards timing and limits rpm to about 4200. How about that?

  3. #3
    Hell Bent or Heaven Sent? Bent's Avatar
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    jeeze, that sounds like it might just be what I'm after.
    I'll have a look at the schematics, and see if I can isolate the circuit to give be a limp mode without the warning light... possibly a diode...

  4. #4
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Bent View Post
    jeeze, that sounds like it might just be what I'm after.
    I'll have a look at the schematics, and see if I can isolate the circuit to give be a limp mode without the warning light... possibly a diode...
    1996 SLX 780 - I think that if you ground the Gray wire feeding into the CDI, that will invoke limp mode, without lighting up the MFD warning LED.

    I think that is what the LR module does when it senses a problem condition.

    Let us know what you find.

    When the engine is revving up against the RPM limiter, it will run rather roughly, and will waste fuel if held against the limiter. The carbs will deliver fuel, but the spark is suppressed intermittently to keep the RPM in check.

    I think some of the other CDI models have a less aggressive spark advance curve, but I do not know which ones would drop into your 780.

  5. #5
    Hell Bent or Heaven Sent? Bent's Avatar
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    I'm with you there K,
    ignition retarding without proper fuel management will result in a bluubering rich condition when help WOT.

    I think I'd best just get a second ski.

  6. #6
    Lake Mead Bum & BTLS Mark starflight's Avatar
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    The 750 cdi will work. Its only retarded a few degrees from the 780 though. I still think it will have a good pull to it.

  7. #7
    Click avatar for tech links/info, donation request K447's Avatar
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    Quote Originally Posted by Bent View Post
    ...ignition retarding without proper fuel management will result in a blubbering rich condition when held WOT.

    I think I'd best just get a second ski.
    Actually, I don't know if the CDI retards the timing in limp mode, or just revs straight into the limiter.

    Second ski - you'll get lots of encouragement on that around here!

    Beginners tend to feel better on the 3 seat machines. More stable at low speeds, and when boarding (or re-boarding in deep water). Install a boarding step.

    The Ficht fuel injected machines have a much smoother throttle response - no peakiness at all. And very good fuel economy, especially the injected twin cylinder models (Virage, Freedom).

    I don't know if the carbureted domestic twins have the same aggressive timing curve as the domestic triples - never ridden one.

  8. #8
    Hell Bent or Heaven Sent? Bent's Avatar
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    there's a '95 SLT for sale locally - but they want $3500.00 CDN for it.
    http://www.buysell.com/root/detail/M..._Ready_to.aspx

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