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Type: Posts; User: Adam

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    Have you checked the deck height of all three...

    Have you checked the deck height of all three cylinders ? When you say "you get water in 1& 2 cylinders " how much ? And how is it manifesting ?
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    Sounds like one cylinder has lost compression.

    Sounds like one cylinder has lost compression.
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    Have you machined the head ?

    Have you machined the head ?
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    356

    I have a 14 vane 158mm setback Skat trak pump and...

    I have a 14 vane 158mm setback Skat trak pump and an 07 75mm hub high pressure oem pumps.
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    I have both parts too ,I just measured them both...

    I have both parts too ,I just measured them both and I was incorrect! The 05 pipe is different in both the joint pipe and the stinger diameter on item 25 ! The early pipes were 69.54mm dia and the 05...
  6. Aftermarket 1200 grate ,the 800 grate is faster...

    Aftermarket 1200 grate ,the 800 grate is faster and is curved on the rear scoop edge.
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    Do you have any photos of the plate and grate it...

    Do you have any photos of the plate and grate it has currently ?
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    Item 25 wasn’t changed ,it’s item 16 that was...

    Item 25 wasn’t changed ,it’s item 16 that was updated in 2005 from the 03/04 models . The 1200 pipes are the same as the 03/04 pipes . Hope this helps , the photos I posted are the “joint pipe “ item...
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    View Post

    Yes mate , I have done it on two GP1200Rís . Adds 10 hp to the power .
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    Most desirable GPR/ XLX ?

    Which. Yamaha is the most sought after in the second hand market? A GPR or an XLX ? Trying to decide which ski to restore and keep / sell .
    Thanks for your input.
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    Cranks are the same ,so are the seals . Just put...

    Cranks are the same ,so are the seals . Just put a 1200 crank in a 1300 . The 1300 cylinders have an exhaust port height that is 2mm lower than a 1200 cylinder. It’s a fixed height and the rev limit...
  12. Have you looked at the plastic nut that holds the...

    Have you looked at the plastic nut that holds the steering cable in place where it goes out the back of the hull ? If it is broken you may have slop and uncommanded movements in the steering.
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    This is a ported 1200 cylinder by Judge ,note the...

    This is a ported 1200 cylinder by Judge ,note the finish is rough . What is the exhaust port height on the 1300 power valve cylinder by the way ? I know the 05-08 cylinders are 42mm down from the...
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    The 1300 anodes are in the head ! Looks like the...

    The 1300 anodes are in the head ! Looks like the skirts have been cut shorter than the middle one .
  15. Thread: Sad, R&D closing.

    by Adam
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    Yamaha R&D grates are now the holy grail for...

    Yamaha R&D grates are now the holy grail for GP/GPR skis if you can find them . I just bought a brand new R&D GP1200 scoop grate for my 98 GP . I have 2 GP1200R R&D grates and 1 R&D GP800R grate . I...
  16. Do you have a 95 main jet in the return line ? If...

    Do you have a 95 main jet in the return line ? If not the carbs will suck air back from the fuel tank and stop the engine.
  17. View Post

    Good idea , you will soon work out if thatís the issue .
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    Yes I can see the pin is captured with a non OEM...

    Yes I can see the pin is captured with a non OEM retainer.
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    Sticky: Does anyone know if the bolt pattern of the...

    Does anyone know if the bolt pattern of the GP1800 and VX is the same as a GP1200R for the scoop grate shoe combo? It looks very similar, looking for alternatives for the GP1200R / 1300 R Hull .
  20. It only has to be a slight movement with the...

    It only has to be a slight movement with the screwdriver but water pressure is very powerful and will pull it down if it’s at all lose . It’s got to be the ride plate , the pump shoe is held up by...
  21. Another possibility is the inserts holding the...

    Another possibility is the inserts holding the rideplate are pulling thru slightly under high pressure water. The rideplate might appear tight but it’s not . Get a long flat screwdriver and try...
  22. Sticky: Well it’s 2020 and here in Australia ���� there’s...

    Well it’s 2020 and here in Australia ���� there’s lots of blokes buying a GP1200R or a GP1300R and rebuilding them . I’ve helped quite a few and they are happy with a $3000 au ski vs a $25000 au...
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    The VXR 2013 has a plastic nozzle I think is zero...

    The VXR 2013 has a plastic nozzle I think is zero degrees , it has no trim capacity and was known to break ., if hit hard when surf jumping .6BU-R1318-01-00
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    The bolt holes are slightly different on the top...

    The bolt holes are slightly different on the top holes , you maybe able to oval out the holes with a dremel tool . What angle is the VXR nozzle ? Because a FZR nozzle is 3 degrees and will bolt...
  25. It’s an old thread but the question remains about...

    It’s an old thread but the question remains about the SS800 grate . Do you have any left ?
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