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Thread: 670 Rotax

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  1. #1
    Super Moderator Av8r3400's Avatar
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    Default Re: 670 Rotax

    Quote Originally Posted by nlappos View Post
    Well, I am committed now. I'll let you know how it goes. Did they tell you what needed tinkering?
    I'm not a 2-stroke guy, but what I can remember is that the carbs were in a constant state of change, needles, jets, I don't know what else. There was a lot of maintenance in regard to the RAVE valves. Cleaning, adjusting and such. The one guy who had his the longest seemed to have the head off his engine several times a year to de-carbon or re-gasket. Everyone also always had several sets of spark plugs available as well as a full kit of carb parts to change.
    Av8r3400
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  2. #2
    nlappos's Avatar
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    Default Re: 670 Rotax

    Well, I am about to find out!

    Yes, it is a dual ignition engine, uses the Ducati

  3. #3
    nlappos's Avatar
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    Default Re: 670 Rotax

    I unboxed my 670 today and started the install. I will use this thread to report 670 specific item for the group

    Rod Davis, Rotax Rick zero time engine. Job looks great, high quality, neatly packed, all accessories and hardware.

    Mounting- standard Avid 582 brackets fit properly. Looks like it will slide in easily. Details to follow.

    Weighed everything:

    670 engine 89.5 lbs

    Starter and housing plate 5.5 lb

    Bing 54 carbs 4.0 lb (2carbs)

    Dual air filter and clamps 1.0 lb

    total 100.0 lbs

  4. #4
    FoxDB's Avatar
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    Default

    Are going with oil injection or premixing?

    Sorry for asking you again I get confused jumping between forums.

  5. #5

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    Default Re: 670 Rotax

    What type oil was advised by Rick for Rotary Gear lubrication ?

  6. #6
    FoxDB's Avatar
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    Default Re: 670 Rotax

    TY2068,
    I don't know about R Rick but everyone I know just uses a 2 stroke oil for rotary valve and water pump shaft lubrication. I don't believe this is a high wear area.
    Dave

  7. #7
    nlappos's Avatar
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    Default Re: 670 Rotax

    The oil lube has the same basic reservoir at the top, and the engine was shipped with that system primed and full.
    The oil mixing pump was disabled, and Rick makes mixing (at 40:1) a term of his warranty. That means I get back a ton of space behind the dash when I pull the oil tank.

    Rick requires Amsoil Interceptor or Quicksilver PWC oil at 40:1

    I have the engine mounted now and intend to make all the connections today, oil, throttle, fuel, and begin mounting the radiators. I plan to add a belly radiator for summer cooling, and have a blocker plate that is cockpit controlled for cooler seasons.

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