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  1. #1
    Hydrotherapy's Avatar
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    any 4 stroke guys out there

    guys do any of you know what yamaha these are off and if so what there worth ????
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  2. #2
    They look to be the throttle bodies on the FXHO, I dont know if the other four strokes use the same throttle bodies. You can look on the RIVA OEM parts guide to find out how much they are brand new.

  3. #3
    EZ Dock of Long Island Shibby1485's Avatar
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    that's the whole intake manifold from a yamaha MR-1 engine... did it come out of a modded ski? looks like someone pulled flame arrestors out and prob put the velocity stacks on

  4. #4
    Happily Self-Employed WFO's Avatar
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    I "understand" that there is a large pile of those throttle bodies behind most busy Yamaha dealerships, usually located around the trash dumpster.

  5. #5
    EZ Dock of Long Island Shibby1485's Avatar
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    Quote Originally Posted by WFO View Post
    I "understand" that there is a large pile of those throttle bodies behind most busy Yamaha dealerships, usually located around the trash dumpster.
    from the early models, yep... not so much in the past couple years of the 4-stroke models... take TBs right of a streetbike and throw them in a jetski and somehow they envisioned that working in a salty environment

  6. #6

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    They are off a FX160.

    I was told that there was a recall for the 2005 ski due to the TB return springs failing. As this would have been too complicated for a dealer to swap out, the dealers swapped out the entire TB assemble. Hence a big pile of them out there.

    They come up every now and again on ebay.

  7. #7
    is there a difference in bore size from the fx140 and the fx160 ho? Im putting together a fx140 engine. boring it out to 77mm increasing compression and some other minor performance upgrades. Need to know if the fx160 throttles are larger as i do not have the throttles off the engine i have, but have a set of unkown throttles. the throttles I have are 42mm at the opening and 40 mm at the back and butterfly.

  8. #8
    lockpwc's Avatar
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    Looks like what is on my 04 HO that I just picked up a few days ago. Was that spring problem only on the 05 models?

  9. #9
    used riva velocity stacks anyone? need some to build a sheetmetal plenum for turbo.

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